Question

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

(a) (i) and (iv)
(b) (ii) (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)

Answer 1

(b) (ii), (iii) and (iv)

Unisexual flowers have either male or female sexual organ. Therefore, they cannot self-pollinate and, thus, show cross-pollination. The ovary of the female organ develops into a fruit after fertilisation, therefore flowers having stamens cannot produce fruits.