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?

<p>To achieve pollination (C)</p> Signup and view all the answers

What is the structure of a mature angiosperm embryo sac?

<p>8-nucleate and 7-celled (D)</p> 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?

<p>Cross-pollination (D)</p> Signup and view all the answers

What is the primary advantage of wind pollination?

<p>It allows for cross-pollination over long distances (A)</p> 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?

<p>Pollination (C)</p> Signup and view all the answers

What is the function of the anther in a flower?

<p>To produce the pollen grains (A)</p> Signup and view all the answers

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

<p>They are non-motile (A)</p> Signup and view all the answers

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