
JARINGAN TUMBUHAN
Presentation
•
Biology
•
10th - 11th Grade
•
Hard
Devi Sari
Used 4+ times
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5 Slides • 0 Questions
1
Bahan Ajar Biologi Kelas XI MIPA Semester Ganjil
Tahun Pelajaran 2021/2022
Oleh : Devi Anggun Sari
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Berdasarkan aktivitas pembelahan sel :
1. Jaringan meristem (Jaringan embrional)
: Sel-selnya aktif membelah.
2. Jaringan Permanen (Jaringan dewasa)
: Berasal dari pembelahan sel-sel meristem yang telah berdiferensiasi atau mengalami perubahan bentuk sesuai dengan fungsinya.
3
Ciri-ciri :
- sel-sel muda yang aktif membelah
- Susunan sel rapat --- tidak memiliki ruang antar sel
- Bentuk sel bervariasi : lonjong, bulat, kuboid atau prismatik
- Dinding sel tipis
- Mengandung banyak protoplasma
- Nukleus besar
- Vakuola sel kecil
Berdasarkan asal terbentuknya :
1. Meristem Primer
berasal dari sel-sel inisial (Promeristem) --- jaringan embrional
2. Meristem Sekunder
sel-sel dewasa yang berubah sifatnya menjadi sel-sel meristematik.
Ex : kambium, kambium gabus (felogen)
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1. Meristem Apikal : terdapat di ujung (apeks) batang, pucuk, dan ujung akar.
2. Meristem Interkalar : terdapat di antara jaringan dewasa (antar ruas).
3. Meristem Lateral (samping) : terletak memanjang sejajar permukaan batang atau akar.
Bahan Ajar Biologi Kelas XI MIPA Semester Ganjil
Tahun Pelajaran 2021/2022
Oleh : Devi Anggun Sari
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