Question

Select the statements that are true for a typical megasporangium of flowering plants:
(i) It is attached to the placenta by hilum.
(ii) It has a chalaza end that represents the basal part of the ovule.
(iii) It has nucellus enclosed by integuments.
(iv) Its micropylar end is known as chalaza.
Choose the correct answer:

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (iii) and (iv)
• D. (i) and (iv)

Hint:

The ovule’s chalaza is its basal part, opposite the micropylar end, and the nucellus, containing the embryo sac, is protected by integuments.

Answer 1

The Correct Option is B

A typical megasporangium (ovule) in flowering plants has the following features: (i) is correct, as the ovule is attached to the placenta via the hilum. (ii) is correct, as the chalaza is the basal part of the ovule. (iii) is correct, as the nucellus is enclosed by integuments. (iv) is incorrect, as the micropylar end, where the pollen tube enters, is opposite the chalaza. The true statements are (i), (ii), and (iii), but since option (B) includes only (ii) and (iii), it is the closest match.