Q11 of 53 Page 9

Choose the correct statement from the following:

Chasmogamous flower have exposed anthers and stigma. Chasmogamous flower can exhibit autogamy as well as allogamy i.e., cross-pollination. And cross-pollination is of two types geitonogamy and xenogamy. So, Chasmogamous flower can exhibit autogamy as well as geitonogamy. Hence option (b) and (d) are incorrect.


Cleistogamous flowers are closed flowers i.e., they never open and the anther and stigma lie together inside. As this flower is always closed so, there is no chance of cross pollination or geitonogamy. So option (c) is incorrect.


Therefore, the correct answer is option (a).

More from this chapter

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9

From the statements given below choose the options that are true for a typical female gametophyte of a flowering plant:

i. It is 8-nucleate and 7-celled at maturity


ii. It is free-nuclear during the development


iii. It is situated inside the integument but outside the nucellus


iv. It has an egg apparatus situated at the chalazal end


 10

Autogamy can occur in a chasmogamous flower if:

 12

A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by:

 13

From among the situations given below, choose the one that prevents both autogamy and geitonogamy.