Artikel Biologi kelas 8 ini menjelaskan bagian-bagian tumbuhan dan fungsinya. Mulai dari akar, batang, daun, bunga, buah, dan biji. Yuk, kita pelajari bersama!
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Sama seperti manusia, tumbuhan adalah makhluk hidup yang punya beberapa organ penting di dalam ‘tubuh’ nya.
Lah, tumbuhan punya organ?
Punya dong, tapi organ yang dimaksud bukan otak atau jantung yaa. Dari bentuk tubuh luarnya aja beda, tentu dalamnya juga beda. Tumbuhan punya beberapa organ yang berperan sangat penting untuk kelangsungan hidupnya.
Emang sepenting apa sih peran-perannya?
Nah, daripada kamu penasaran, berikut penjelasan mengenai organ tumbuhan dan fungsinya. Tumbuhan memiliki 6 bagian penting, yaitu akar, batang, daun, bunga, buah, dan biji. Yuk, simak penjelasannya!
1. Akar
Kenapa pohon yang batangnya besaaaar banget bisa tumbuh tinggi dan kuat? Itu semua karena pondasinya, yaitu akar. Akar adalah bagian pokok tumbuhan yang biasanya tumbuh di bawah permukaan, yaitu di dalam tanah. Dari dalam tanah inilah akar bisa memperkokoh tumbuhan yang semakin tumbuh menjulang ke atas.
Biasanya, akar berwarna putih atau kuning muda, dan bentuk ujungnya panjang meruncing. Karena bentuknya yang seperti itu, maka akar bisa dengan mudah menembus tanah untuk menyerap makanan.
Makanannya akar adalah unsur hara, seperti air dan garam mineral. Dengan kata lain, fungsi akar adalah untuk menyerap nutrisi dari unsur hara, yang nantinya akan diedarkan ke seluruh bagian tumbuhan. Semakin dewasa tumbuhan, maka semakin panjang dan menjalar juga akarnya. Itu karena akar akan terus menembus tanah demi mencari unsur hara di sekitarnya.
Akar tumbuhan juga punya beberapa jenis. Tapi jenis akar yang paling umum dan sering ditemukan adalah akar serabut dan akar tunggang. Lalu, apa sih bedanya akar serabut dengan akar tunggang?
Nah, sekarang coba deh tebak, pohon di bawah ini akarnya tumbuh di mana? Di atas atau di bawah tanah?
Pohon Baobab di Madagaskar, Afrika. (Sumber: kumparan.com)
Kelihatannya sih kayak tumbuh di atas yaa, kayak kebalik gitu ditanamnya. Padahal, akarnya tetap tumbuh di bawah tanah, lho! Pohon ini namanya pohon Baobab, dan biasanya ditemui di benua Afrika.
Nggak cuman bentuknya yang unik, pohon ini juga punya khasiat kesehatan sampai untuk ritual adat dan agama. Pohon Baobab sampai dijuluki “Tree of Life”, karena memberi banyak manfaat untuk masyarakat sekitar dan umurnya yang bisa mencapai ribuan tahun. Wow, ternyata ini pohon juga saksi sejarah juga ya!
Baca Juga: 5 Jenis Jaringan Tumbuhan dan Fungsinya
2. Batang
Beda sama akar yang tumbuhnya di bawah tanah, kalau batang, ya, tumbuhnya di atas. Batang adalah sumbu tumbuhan yang menopang daun, bunga, dan buah. Bentuk batang seperti silinder, yaitu panjang dan bulat. Batang akan tumbuh tinggi ke atas supaya bisa dapetin cahaya matahari dan udara yang cukup.
Terus, gimana dengan tumbuhan kayak jagung dan padi? Mereka punya batang nggak ya?
Tetap punya dong. Jenis batangnya jagung dan padi emang beda sama tumbuhan lainnya, yaitu batang rumput. Selain batang rumput, ada juga beberapa jenis batang lainnya, yaitu sebagai berikut:
Nggak cuman menopang tumbuhan, batang juga berfungsi untuk menyalurkan unsur hara dari akar ke seluruh organ tumbuhan. Jadi, unsur hara yang sudah diserap oleh akar, akan diedarkan ke daun, bunga, dan buah melalui batang.
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Sampai sini, sudah mulai paham belum dengan materi bagian-bagian tumbuhan dan fungsinya? Kalo masih ada poin-poin yang belum kamu mengerti, mending belajar sama ahlinya, deh. Belajar bareng kakak-kakak pengajar di Ruangguru Privat Biologi misalnya.
Belajar nggak cuma menyenangkan, tapi kamu juga bakal diajari konsepnya sampai paham! Para pengajar di Ruangguru Privat juga sudah terstandarisasi kualitasnya, loh. Kamu juga bisa pilih nih, mau diajarkan secara langsung (offline) atau daring (online). Fleksibel, kan? Untuk info lebih lanjut, cuss klik link berikut!
3. Daun
Melihat keluar jendela, ada pohon, pasti lihat daun. Lagi jalan di trotoar, pasti nginjek daun. Dari semua organ tumbuhan, pasti teman-teman paling familier dengan daun dong. Yap, daun itu yang biasanya warnanya hijau dan seringkali berguguran dari pohonnya.
Daun adalah salah satu organ tumbuhan yang tumbuh dan menempel pada batang. Bentuknya tipis, lebar, dan biasanya berwarna hijau. Nah, kenapa sih daun ini kebanyakan warnanya hijau? Jawabannya karena adanya klorifil, gengs!
Selain warna hijau, daun dari beberapa tanaman juga bisa berwarna lain loh. Bukan karena perubahan musim ya, tapi emang warnanya nggak hijau dari sananya. Warnanya bisa nggak hijau karena zat warna yang dimiliki si daun bukan klorofil, tapi zat warna lain. Kalau zat warna jingga adalah karotenoid, zat warna kuning adalah tnnin, dan zat warna merah keunguan adalah anthocyanin.
Daun punya peran atau fungsi penting bagi tumbuhan, yaitu sebagai tempat di mana proses fotosintesis. Tapi, fotosintesis hanya terjadi saat ada cahaya ya, misalnya cahaya matahari. Selain itu, peran daun lainnya adalah sebagai organ yang mengeluarkan oksigen segar (O2) dan menyerap karbon dioksida (CO2).
Baca Juga: Fotosintesis, Menjelaskan Bagaimana Cara Tumbuhan Makan?
Ternyata bentuk daun itu juga berbeda loh, kok bisa ya? Iya, karena bentuk daun tergantung dari tulang daun dan jenis tumbuhannya. Secara umum, ada 4 jenis daun berdasarkan bentuk tulangnya, di antaranya:
a. Daun Menyirip
Jenis daun ini memiliki struktur tulang yang bentuknya menyirip, seperti susunan tulang ikan. Contohnya seperti daun mangga, daun jambu, daun rambutan, dan lain sebagainya.
b. Daun Menjari
Seperti namanya, daun menjari memiliki bentuk seperti susunan jari-jari tangan kita. Jumlah helaian pada daun menjari, umumnya ganjil. Contohnya daun singkong, daun pepaya, daun jarak, daun mentimun, dan masih banyak lagi.
c. Daun Melengkung
Daun melengkung memiliki bentuk tulang seperti garis-garis yang melengkung. Bahkan, ada juga daun melengkung yang bentuknya seperti mangkok. Contoh daun melengkung, di antaranya daun genjer, daun eceng gondok, daun sirih, daun gadung, dan lain-lain.
d. Daun Sejajar
Daun sejajar punya ciri khas yang berbentuk seperti garis-garis lurus yang sejajar. Contohnya seperti rumput, daun jagung, daun padi, daun tebu, dan lain sebagainya.
Baca Juga: Macam-Macam Gerak pada Hewan dan Tumbuhan
4. Bunga
Teman-teman, pasti pada tahu sama bunga kan? Itu loh, yang biasanya di film-film kalau ada orang yang mau mengungkapkan kasih sayang ke orang yang dia cintai, pasti dibawain bunga. Sebenarnya, kenapa sih kalau mau menunjukkan rasa sayang atau pas ada acara formal, pasti ada bunga? Ya karena bunga itu cantik, warnanya mencolok, dan wangi.
Kalau kamu perhatiin, bunga punya bentuk yang berbeda-beda. Tapi sebenarnya, bunga selalu punya struktur dasar yang sama loh. Umumnya, bunga memiliki kelopak, mahkota, serta alat kelamin, yaitu benang sari dan putik.
Bunga jantan, hanya memiliki benang sari. Begitupun dengan bunga betina yang hanya memiliki putik. Meskipun begitu, ada juga bunga yang punya dua alat kelamin, loh! Bunga jenis ini dinamakan bunga sempurna, karena punya benang sari dan putik sekaligus. Contohnya adalah bunga sepatu.
Selain fisiknya yang cantik, apa sih fungsi utamanya bunga? Bunga adalah salah satu alat reproduksi tumbuhan. Perkembangbiakan ini sangatlah penting, kalau enggak, tumbuhan bisa punah. Nah, bunga berkembangbiak melalui penyerbukan. Apa itu penyerbukan ya?
5. Buah
Setelah proses penyerbukan di bunga, akhirnya terjadilah proses pembuahan yang menghasilkan buah. Buah adalah hasil akhir dari penyerbukan yang terjadi di bunga. Buah terdiri atas beberapa struktur, yaitu:
Buah berfungsi sebagai tempat cadangan makanan dan melindungi biji. Makanya, buah mengandung sejumlah nutrisi, seperti vitamin dan mineral yang bermanfaat bagi tubuh kita, loh. Oleh sebab itu, jangan lupa konsumsi buah sebagai penambah gizi harianmu, ya.
Baca Juga: Teknologi yang Terinspirasi dari Jaringan Tumbuhan
6. Biji
Bagian tumbuhan penting terakhir, yaitu biji. Biji adalah cikal bakal tanaman baru. Artinya, semua tumbuhan yang ada di bumi ini, asalnya dari biji. Berdasarkan jumlah kepingnya, biji dikelompokkan menjadi dua jenis, yaitu biji berkeping satu (monokotil) dan biji berkeping dua (dikotil).
Lalu, apa sih bedanya biji dikotil dengan monokotil? Secara jelas, kamu bisa membedakan keduanya, karena baik biji dikotil maupun monokotil, punya perbedaan yang spesifik, mulai dari akar, batang, daun, bunga, hingga buah. Berikut ciri-ciri tumbuhan monokotil dan dikotil yang bisa kamu amati:
Jadi, itulah enam organ tumbuhan yang penting beserta fungsinya. Tapi, kalau cuman tahu organ-organnya, itu masih kurang cukup loh. Seharusnya kamu juga tahu tentang tumbuhan secara menyeluruh. Mau belajar lebih lengkap? Yuk, tonton aja videonya di ruangbelajar! Ada video animasi yang menarik dan nggak bosenin, biar kamu makin semangat belajarnya.
Referensi:
Kementrian Pendidikan dan Kebudayaan. (2017). Ilmu Pengetahuan Alam Kelas VIII SMP/MTS Edisi Revisi 2017. Jakarta: Balitbang Kemendikbud
Sumber Foto:
Foto ‘Pohon Baobab di Madagaskar, Afrika’ [daring], Tautan: https://kumparan.com/kumparansains/pohon-pohon-baobab-kuno-di-afrika-mati-secara-misterius/full
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<h1 class="content-title">
Bagian-Bagian Tumbuhan dan Fungsinya | Biologi Kelas 8 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/almas-tyas" class="">Almas Tyas</a> </p>
<p class="content-info"><span>September 30, 2024 • </span> <span>7 minutes read</span></p>
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<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/60d7f7f7-f70c-407e-8d80-f7a282b8585d.png" alt="bagian bagian tumbuhan dan fungsinya - organ tumbuhan" /></p>
<blockquote>
<p style="text-align: center;"><em><strong><a href="https://www.ruangguru.com/blog/c/biologi-smp-kelas-8">Artikel Biologi kelas 8</a></strong> ini menjelaskan <strong>bagian-bagian tumbuhan dan fungsinya</strong>. Mulai dari akar, batang, daun, bunga, buah, dan biji. Yuk, kita pelajari bersama!</em></p>
</blockquote>
<p style="text-align: center;"><em style="font-family: 'Source Sans Pro', sans-serif; text-align: justify; background-color: transparent;">—</em></p>
<p> </p>
<p style="text-align: justify;">Sama seperti manusia, tumbuhan adalah makhluk hidup yang punya beberapa organ penting di dalam ‘tubuh’ nya.</p>
<p style="text-align: justify;"><em>Lah</em>, tumbuhan punya organ?</p>
<p style="text-align: justify;">Punya <em>dong</em>, tapi organ yang dimaksud bukan otak atau jantung <em>yaa</em>. Dari bentuk tubuh luarnya aja beda, tentu dalamnya juga beda. Tumbuhan punya beberapa organ yang berperan sangat penting untuk kelangsungan hidupnya.</p>
<p style="text-align: justify;">Emang sepenting apa <em>sih</em> peran-perannya?</p>
<p style="text-align: justify;">Nah, daripada kamu penasaran, berikut penjelasan mengenai organ tumbuhan dan fungsinya. Tumbuhan memiliki 6 bagian penting, yaitu akar, batang, daun, bunga, buah, dan biji.<em> Yuk</em>, simak penjelasannya!</p>
<p> </p>
<h2><span style="font-size: 18pt;">1. Akar</span></h2>
<p style="text-align: justify;">Kenapa pohon yang batangnya <em>besaaaar </em>banget bisa tumbuh tinggi dan kuat? Itu semua karena pondasinya, yaitu akar. <strong>Akar adalah bagian pokok tumbuhan yang biasanya tumbuh di bawah permukaan, yaitu di dalam tanah</strong>. Dari dalam tanah inilah akar bisa memperkokoh tumbuhan yang semakin tumbuh menjulang ke atas.</p>
<p style="text-align: justify;">Biasanya, akar berwarna putih atau kuning muda, dan bentuk ujungnya panjang meruncing. Karena bentuknya yang seperti itu, maka akar bisa dengan mudah menembus tanah untuk menyerap makanan.</p>
<p style="text-align: justify;">Makanannya akar adalah <strong>unsur hara</strong>, seperti air dan garam mineral. Dengan kata lain, <strong>fungsi akar</strong> adalah untuk <strong>menyerap nutrisi</strong> dari unsur hara, yang nantinya akan diedarkan ke seluruh bagian tumbuhan. Semakin dewasa tumbuhan, maka semakin panjang dan menjalar juga akarnya. Itu karena akar akan terus menembus tanah demi mencari unsur hara di sekitarnya.</p>
<p style="text-align: justify;">Akar tumbuhan juga punya beberapa jenis. Tapi jenis akar yang paling umum dan sering ditemukan adalah <strong>akar serabut dan akar tunggang. </strong>Lalu, apa sih bedanya akar serabut dengan akar tunggang?</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Perbedaan%20akar%20serabut%20dan%20tunggang.png" alt="Perbedaan akar serabut dan tunggang" /></p>
<p> </p>
<p>Nah, sekarang coba deh tebak, pohon di bawah ini akarnya tumbuh di mana? Di atas atau di bawah tanah?</p>
<div style="text-align: center;"><img decoding="async" style="width: 600px; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/article%208%20-%205%20organ%20penting%20tumbuhan.jpeg" alt="Mengenal 5 Organ Penting Tumbuhan dan Fungsinya" /></div>
<p style="text-align: center;"><em><span style="font-weight: 400;"> Pohon Baobab di Madagaskar, Afrika. (Sumber: kumparan.com)</span></em></p>
<p> </p>
<p style="text-align: justify;">Kelihatannya <em>sih</em> kayak tumbuh di atas <em>yaa</em>, kayak kebalik gitu ditanamnya. Padahal, akarnya tetap tumbuh di bawah tanah, lho! Pohon ini namanya pohon Baobab, dan biasanya ditemui di benua Afrika.</p>
<p style="text-align: justify;">Nggak cuman bentuknya yang unik, pohon ini juga punya khasiat kesehatan sampai untuk ritual adat dan agama. Pohon Baobab sampai dijuluki <em>“Tree of Life”,</em> karena memberi banyak manfaat untuk masyarakat sekitar dan umurnya yang bisa mencapai ribuan tahun. <em>Wow</em>, ternyata ini pohon juga saksi sejarah juga ya!</p>
<p><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/5-jenis-jaringan-pada-tumbuhan-beserta-fungsinya">5 Jenis Jaringan Tumbuhan dan Fungsinya</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;"><strong>2. Batang</strong></span></h2>
<p style="text-align: justify;">Beda sama akar yang tumbuhnya di bawah tanah, kalau batang, ya, tumbuhnya di atas. <strong>Batang adalah sumbu tumbuhan yang menopang daun, bunga, dan buah.</strong> Bentuk batang seperti silinder, yaitu panjang dan bulat. Batang akan tumbuh tinggi ke atas supaya bisa <em>dapetin</em> cahaya matahari dan udara yang cukup.</p>
<p style="text-align: justify;">Terus, gimana dengan tumbuhan kayak jagung dan padi? Mereka punya batang <em>nggak</em> ya?</p>
<p style="text-align: justify;">Tetap punya <em>dong</em>. Jenis batangnya jagung dan padi emang beda sama tumbuhan lainnya, yaitu batang rumput. Selain batang rumput, ada juga beberapa jenis batang lainnya, yaitu sebagai berikut:</p>
<p><img decoding="async" style="width: 600px; margin: 0px auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/jenis-jenis%20batang.png" alt="jenis-jenis batang dari organ tumbuhan" /></p>
<p> </p>
<p style="text-align: justify;"><em>Nggak</em> cuman <strong>menopang tumbuhan</strong>, <strong>batang juga berfungsi</strong> untuk <strong>menyalurkan unsur hara</strong> dari akar ke seluruh organ tumbuhan. Jadi, unsur hara yang sudah diserap oleh akar, akan diedarkan ke daun, bunga, dan buah melalui batang.</p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;">Sampai sini, sudah mulai paham belum dengan materi bagian-bagian tumbuhan dan fungsinya? Kalo masih ada poin-poin yang belum kamu mengerti, mending belajar sama ahlinya, deh. Belajar bareng kakak-kakak pengajar di <a href="https://www.ruangguru.com/privat/biologi"><strong>Ruangguru Privat Biologi</strong></a> misalnya.</p>
<p style="text-align: justify;">Belajar nggak cuma menyenangkan, tapi kamu juga bakal diajari konsepnya sampai paham! Para pengajar di Ruangguru Privat juga sudah terstandarisasi kualitasnya, loh. Kamu juga bisa pilih nih, mau diajarkan secara langsung (<em>offline</em>) atau daring (<em>online</em>). Fleksibel, kan? Untuk info lebih lanjut, cuss klik link berikut!</p>
<p><a href="https://cta.ruangguru.com/blog-rg10-privat"><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/94e6e69e-708c-48fc-b4e9-d277c9405371.png" alt="CTA Ruangguru Privat" /></a></p>
<p> </p>
<h2><span style="font-size: 18pt;"><strong>3. Daun</strong></span></h2>
<p style="text-align: justify;">Melihat keluar jendela, ada pohon, pasti lihat daun. Lagi jalan di trotoar, pasti <em>nginjek</em> daun. Dari semua organ tumbuhan, pasti teman-teman paling familier dengan daun <em>dong</em>. <em>Yap</em>, daun itu yang biasanya warnanya hijau dan seringkali berguguran dari pohonnya.</p>
<p style="text-align: justify;"><strong>Daun adalah salah satu organ tumbuhan yang tumbuh dan menempel pada batang</strong>. Bentuknya tipis, lebar, dan biasanya berwarna hijau. Nah, kenapa sih daun ini kebanyakan warnanya hijau? Jawabannya karena adanya klorifil, <em>gengs</em>!</p>
<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/2d619469-8465-4128-aeb8-4ace3ed7b140.png" alt="fungsi klorofil" /></p>
<p> </p>
<p style="text-align: justify;">Selain warna hijau, daun dari beberapa tanaman juga bisa berwarna lain <em>loh.</em> Bukan karena perubahan musim ya, tapi emang warnanya <em>nggak</em> hijau dari sananya. Warnanya bisa <em>nggak</em> hijau karena zat warna yang dimiliki si daun bukan klorofil, tapi zat warna lain. Kalau zat warna jingga adalah <strong>karotenoid</strong>, zat warna kuning adalah <strong>tnnin</strong>, dan zat warna merah keunguan adalah <strong>anthocyanin</strong>.</p>
<p style="text-align: justify;"><strong>Daun punya peran atau fungsi penting</strong> bagi tumbuhan, yaitu <strong>sebagai tempat di mana proses fotosintesis</strong>. Tapi, fotosintesis hanya terjadi saat ada cahaya ya, misalnya cahaya matahari. Selain itu, peran daun lainnya adalah sebagai organ yang mengeluarkan oksigen segar (O<sub>2</sub>) dan menyerap karbon dioksida (CO<sub>2</sub>).</p>
<p><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/fotosintesis">Fotosintesis, Menjelaskan Bagaimana Cara Tumbuhan Makan?</a></strong></p>
<p style="text-align: justify;">Ternyata bentuk daun itu juga berbeda loh, kok bisa ya? Iya, karena bentuk daun tergantung dari tulang daun dan jenis tumbuhannya. Secara umum, ada 4 jenis daun berdasarkan bentuk tulangnya, di antaranya:</p>
<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/0fba8dda-3c41-4308-af81-7954538a3852.png" alt="jenis jenis daun" /></p>
<p> </p>
<h3><span style="font-size: 14pt;">a. Daun Menyirip</span></h3>
<p style="text-align: justify;">Jenis daun ini memiliki struktur tulang yang bentuknya menyirip, seperti susunan tulang ikan. Contohnya seperti daun mangga, daun jambu, daun rambutan, dan lain sebagainya.</p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">b. Daun Menjari</span></h3>
<p style="text-align: justify;">Seperti namanya, daun menjari memiliki bentuk seperti susunan jari-jari tangan kita. Jumlah helaian pada daun menjari, umumnya ganjil. Contohnya daun singkong, daun pepaya, daun jarak, daun mentimun, dan masih banyak lagi.</p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">c. Daun Melengkung</span></h3>
<p style="text-align: justify;">Daun melengkung memiliki bentuk tulang seperti garis-garis yang melengkung. Bahkan, ada juga daun melengkung yang bentuknya seperti mangkok. Contoh daun melengkung, di antaranya daun genjer, daun eceng gondok, daun sirih, daun gadung, dan lain-lain.</p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">d. Daun Sejajar</span></h3>
<p style="text-align: justify;">Daun sejajar punya ciri khas yang berbentuk seperti garis-garis lurus yang sejajar. Contohnya seperti rumput, daun jagung, daun padi, daun tebu, dan lain sebagainya.</p>
<p><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/macam-gerak-pada-mahkluk-hidup-dan-benda">Macam-Macam Gerak pada Hewan dan Tumbuhan</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;"><strong>4. Bunga</strong></span></h2>
<p style="text-align: justify;">Teman-teman, pasti pada tahu sama bunga kan? Itu <em>loh</em>, yang biasanya di film-film kalau ada orang yang mau mengungkapkan kasih sayang ke orang yang dia cintai, pasti dibawain bunga. Sebenarnya, kenapa sih kalau mau menunjukkan rasa sayang atau pas ada acara formal, pasti ada bunga? Ya karena bunga itu cantik, warnanya mencolok, dan wangi.</p>
<p style="text-align: justify;">Kalau kamu perhatiin, bunga punya bentuk yang berbeda-beda. Tapi sebenarnya, bunga selalu punya struktur dasar yang sama <em>loh</em>. Umumnya, bunga memiliki <strong>kelopak, mahkota, serta alat kelamin, yaitu benang sari dan putik</strong>.</p>
<p style="text-align: justify;"><strong>Bunga jantan</strong>, hanya memiliki <strong>benang sari</strong>. Begitupun dengan <strong>bunga betina</strong> yang hanya memiliki <strong>putik</strong>. Meskipun begitu, ada juga bunga yang punya dua alat kelamin, loh! Bunga jenis ini dinamakan <strong>bunga sempurna</strong>, karena <strong>punya benang sari dan putik sekaligus</strong>. Contohnya adalah bunga sepatu.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bagian-bagian%20bunga.png" alt="bagian-bagian bunga sebagai organ tumbuhan yang penting" /></p>
<p> </p>
<p style="text-align: justify;">Selain fisiknya yang cantik, apa <em>sih</em> fungsi utamanya bunga? Bunga adalah salah satu <strong>alat reproduksi </strong>tumbuhan. Perkembangbiakan ini sangatlah penting, kalau enggak, tumbuhan bisa punah. Nah, bunga berkembangbiak melalui penyerbukan. Apa itu penyerbukan ya?</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/apa%20itu%20proses%20penyerbukan.png" alt="apa itu proses penyerbukan" /></p>
<p> </p>
<h2><span style="font-size: 18pt;"><strong>5. Buah</strong></span></h2>
<p style="text-align: justify;">Setelah proses penyerbukan di bunga, akhirnya terjadilah proses pembuahan yang menghasilkan buah. <strong>Buah adalah hasil akhir dari penyerbukan yang terjadi di bunga</strong>. Buah terdiri atas beberapa struktur, yaitu:</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bagian-bagian%20buah.png" alt="bagian-bagian buah" /></p>
<p> </p>
<p style="text-align: justify;">Buah berfungsi sebagai tempat cadangan makanan dan melindungi biji. Makanya, buah mengandung sejumlah nutrisi, seperti vitamin dan mineral yang bermanfaat bagi tubuh kita, loh. Oleh sebab itu, jangan lupa konsumsi buah sebagai penambah gizi harianmu, ya.</p>
<p><strong>Baca Juga: <a href="https://www.ruangguru.com/blog/4-teknologi-yang-terinspirasi-dari-jaringan-tumbuhan">Teknologi yang Terinspirasi dari Jaringan Tumbuhan</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;">6. Biji</span></h2>
<p style="text-align: justify;">Bagian tumbuhan penting terakhir, yaitu biji. Biji adalah cikal bakal tanaman baru. Artinya, semua tumbuhan yang ada di bumi ini, asalnya dari biji. Berdasarkan jumlah kepingnya, biji dikelompokkan menjadi dua jenis, yaitu biji berkeping satu (<strong>monokotil</strong>) dan biji berkeping dua (<strong>dikotil</strong>).</p>
<p style="text-align: justify;">Lalu, apa sih bedanya biji dikotil dengan monokotil? Secara jelas, kamu bisa membedakan keduanya, karena baik biji dikotil maupun monokotil, punya perbedaan yang spesifik, mulai dari akar, batang, daun, bunga, hingga buah. Berikut ciri-ciri tumbuhan monokotil dan dikotil yang bisa kamu amati:</p>
<p><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/ba2c8a02-009a-4750-af68-197041d29d7d.png" alt="perbedaan tumbuhan dikotil dengan monokotil" /></p>
<p> </p>
<p style="text-align: justify;">Jadi, itulah enam organ tumbuhan yang penting beserta fungsinya. Tapi, kalau cuman tahu organ-organnya, itu masih kurang cukup <em>loh</em>. Seharusnya kamu juga tahu tentang tumbuhan secara menyeluruh. Mau belajar lebih lengkap? <em>Yuk</em>, tonton aja videonya di <a href="https://ruangguru.onelink.me/blPk/eaff0eb9" target="_blank" rel="noopener"><strong>ruangbelajar!</strong></a> Ada video animasi yang menarik dan <em>nggak</em> bosenin, biar kamu makin semangat belajarnya.</p>
<p style="text-align: center;"><a class="rg-cta" style="text-align: center;" href="https://link.ruangguru.com/blPk/eaff0eb9" target="_blank" rel="noopener"><img decoding="async" class="aligncenter" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/0ec4a2df-db2e-4ae1-8473-692756dcb684.jpeg" alt="IDN CTA Blog ruangbelajar Ruangguru" /></a></p>
<p><strong>Referensi: </strong></p>
<p>Kementrian Pendidikan dan Kebudayaan. (2017). Ilmu Pengetahuan Alam Kelas VIII SMP/MTS Edisi Revisi 2017. Jakarta: Balitbang Kemendikbud</p>
<p><strong>Sumber Foto:</strong></p>
<p>Foto ‘Pohon Baobab di Madagaskar, Afrika’ [daring], Tautan: https://kumparan.com/kumparansains/pohon-pohon-baobab-kuno-di-afrika-mati-secara-misterius/full</p>
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<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>