Question

Which among the following statements are true for uni-sexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Uni-sexual flowers possessing only stamens cannot produce fruits.

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

Answer 1

The correct option is B (ii), (iii) and (iv)

Unisexual flowers are those, which bear only male or female flowers, but never both together. As only one sex is present, it undergoes cross-fertilization, where gametes are produced by two different plants. Fruit develops from the female flower and hence, fruit cannot be produced by the unisexual plants which possess male flowers (stamen).
Thus, the correct answer is option (B), '(ii), (iii) and (iv)'.