NEET 2020 · BiologyFlowerPrevious Year Question
Ray florets have
Answer: (C) Inferior ovary. Ray florets of sunflower (Asteraceae) are epigynous: the thalamus margin grows up and fuses around the ovary, so the ovary lies below the other floral parts and is inferior.
- A.Hypogenous ovary
- B.Half inferior ovary
- C.Inferior ovary✓
- D.Superior ovary
Correct Answer
(C) Inferior ovary
Solution & Explanation
Ray florets of sunflower (Asteraceae) are epigynous: the thalamus margin grows up and fuses around the ovary, so the ovary lies below the other floral parts and is inferior. Option (A) 'Hypogenous' is a misprint for hypogynous (which would be a superior ovary), so the correct answer is inferior ovary. NCERT Reference: Ch 5, p.63, lines 13-15 — "the ovary is said to be inferior as in flowers of guava and cucumber, and the ray florets of sunflower"
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