Question

Kiwi is a dioecious species. Which of the following methods can be definitely ruled out as a possible mode of pollination in that case?

(P) Cleistogamous autogamy

(Q) Chasmogamous autogamy

(R) Geitonogamy

(S) Xenogamy

Options

• Only (P) and (R)

• Only (P) and (Q)

• Only (Q) and (S)

• Only (P), (Q) and (R)

Answer 1

Only (P), (Q) and (R)

Explanation:

Kiwi is dioecious, i.e., male and female flowers are present on different plants. Therefore self-pollination is not possible. Hence cleistogamous autogamy (P) and chasmogamous autogamy (Q) are ruled out. Geitonogamy (R) is also not possible because pollination between flowers on the same plant requires both male and female flowers, which does not occur in dioecious plants. Only xenogamy (S) is possible.