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Pollination in Flowering Plants

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Questions and Answers

What is the primary reason for the evolution of adaptations in flowering plants?

To allow for the production of non-motile gametes

To ensure fertilisation in absence of motile gametes (correct)

To enhance the structure of the embryo sac

To increase the chances of autogamy

What is the term for the transfer of pollen grains from the anther to the stigma of the same flower?

Allogamy

Wind pollination

Autogamy (correct)

Cross-pollination

What is a characteristic of flowers that undergo autogamy?

They have synchrony in pollen release and stigma receptivity (correct)

They have a long distance between anthers and stigma

They have a large number of external agents

They are always self-pollinated

What is the primary function of external agents in flowering plants?

To achieve pollination Signup and view all the answers

What is the structure of a mature angiosperm embryo sac?

8-nucleate and 7-celled Signup and view all the answers

What is the term for the transfer of pollen grains from the anther of one flower to the stigma of another flower?

Cross-pollination Signup and view all the answers

What is the primary advantage of wind pollination?

It allows for cross-pollination over long distances Signup and view all the answers

What is the term for the movement of pollen grains from the anther to the stigma of a flower?

Pollination Signup and view all the answers

What is the function of the anther in a flower?

To produce the pollen grains Signup and view all the answers

What is the characteristic of pollen grains that makes them dependent on external agents?

They are non-motile Signup and view all the answers