Match the placental types (column-I) with their examples (column-II). Column-I: (a) Basal, (b) Axile, (c) Parietal, (d) Free central. Column-II: (i) Mustard, (ii) China rose, (iii) Dianthus, (iv) Sunflower. (NEET 2023 (Odisha))
Answer: (C) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii). Matching NCERT placentation examples: Basal-Sunflower, Axile-China rose, Parietal-Mustard, Free central-Dianthus.
- A.(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- B.(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
- C.(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)✓
- D.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
Correct Answer
(C) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
Solution & Explanation
Matching NCERT placentation examples: Basal-Sunflower, Axile-China rose, Parietal-Mustard, Free central-Dianthus. This gives (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii), which is option (3) = C. NCERT Reference: Ch 5, p.65, lines 29-39 — "axile, as in china rose, tomato and lemon. In parietal placentation, the ovules develop on the inner wall of the ovary ... e.g., mustard and Argemone. When the ovules are borne on central axis and septa are absent, as in Dianthus and Primrose the placentation is called free central. In basal placentation, the placenta develops at the base of ovary and a single ovule is attached to it, as in sunflower, marigold."