Phyllotaxy: Leaf Arrangement Patterns — NEET Biology
📚 Practice ConceptPhyllotaxy is the pattern of arrangement of leaves on the stem or branch. This is usually of three types – alternate, opposite and whorled. In alternate type of phyllotaxy, a single leaf arises at each node in alternate manner, as in china rose, mustard and sun flower plants. In opposite type, a pair of leaves arise at each node and lie opposite to each other as in Calotropis and guava plants. If more than two leaves arise at a node and form a whorl, it is called whorled, as in Alstonia.
Match the following plants with their type of phyllotaxy: Column I (Plant) 1. Mustard 2. Calotropis 3. Alstonia 4. China rose 5. Guava Column II (Phyllotaxy type) A. Alternate B. Opposite C. Whorled
View solution & NCERT explanation
Correct answer: B — 1–A, 2–B, 3–C, 4–A, 5–B
Mustard → Alternate phyllotaxy. Calotropis → Opposite phyllotaxy. Alstonia → Whorled phyllotaxy. China rose → Alternate phyllotaxy. Guava → Opposite phyllotaxy. Thus, the correct matching is 1–A, 2–B, 3–C, 4–A, 5–B, which corresponds to Option b.
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