NEET 2019 Odisha · BiologyLeafPrevious Year Question
Which of the following shows whorled phyllotaxy ? (NEET 2023 (Odisha))
Answer: (C) Alstonia. Whorled phyllotaxy is when more than two leaves arise at a single node and form a whorl.
- A.Mustard
- B.China rose
- C.Alstonia✓
- D.Calotropis
Correct Answer
(C) Alstonia
Solution & Explanation
Whorled phyllotaxy is when more than two leaves arise at a single node and form a whorl. The NCERT example for this is Alstonia. (China rose and mustard are alternate; Calotropis is opposite.) NCERT Reference: Ch 5, p.61, lines 20-22 — "If more than two leaves arise at a node and form a whorl, it is called whorled, as in Alstonia."
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