Pertanyaan

: Perhatikan kunci dikotomi tumbuhan berikut: a. Ukuran tubuh mikroskopis qquad b. Ukuran tubuh makroskopis qquad 2 a. Tidak memiliki akar, batang, dan daun qquad tumbuhan tak berpembuluh b. Memiliki akar, batang, dan daun qquad a. Akar tunggang qquad 3 b. Akar serabut qquad 4 4 a. Daun tidak berbentuk seperti pita 5 b. Daun berbentuk pita 5 a. Tulang daun sejajar qquad Monokotil b. Tulang daun menyirip atau menjari qquad Dikotil Urutan identifikasi untuk tanaman mangga sesuai kunci dikotomi di atas adalah .... 1a,2a

Solusi

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Jawaban

1b, 2b, 3a, 5b

Penjelasan

The dichotomous key provided consists of a series of choices (a and b) at each step which leads to the next step or to the identification of the plant in question. To identify a mango plant we can follow the key step by step:1. Mango plants are relatively large plants, not microscopic. So we choose option 'b' which leads us to step 2.2. Mango plants do have roots, stems, and leaves. Therefore, we choose option 'b' which guides us to step 3.3. A mango plant has a tap root system (deep and thick main root), not fibrous roots. We thus select 'a' which brings us to step 4.4. Four a or b will not be used because we would have already identified it as a Monocot based on having a tap root if 4b were the case.5. Finally, since a mango is a dicotyledon, we will choose 'b' because it has reticulate venation (network like) in leaves.The step not used in this sequence is 4a or 4b.