NEET 2021 · BiologyPrevious Year Question
In some members of which of the following pairs of families, pollen grains retain their viability for months after release ? (NEET 2021)
Answer: (B) (b) Rosaceae ; Leguminosae. Answer: B.
- A.(a) Poaceae ; Solanaceae
- B.(b) Rosaceae ; Leguminosae✓
- C.(c) Poaceae ; Rosaceae
- D.(d) Poaceae ; Leguminosae
Correct Answer
(B) (b) Rosaceae ; Leguminosae
Solution & Explanation
Answer: B. Pollen viability is variable: in cereals such as rice and wheat (Poaceae) pollen is lost within 30 minutes, but in some members of Rosaceae, Leguminosae and Solanaceae it persists for months. Of the choices only (b) Rosaceae; Leguminosae pairs two of these long-viability families; every option containing Poaceae is eliminated. NCERT: Ch 1, p.8, lines 7-10 — "In some cereals such as rice and wheat, pollen grains lose viability within 30 minutes of their release, and in some members of Rosaceae, Leguminoseae and Solanaceae, they maintain viability for months."
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