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Question

What happens to the pollen grain after it is transferred from the stamen to stigma?
  1. It fertilizes the egg cell.
  2. It germinates to form the pollen tube.
  3. It grows to meet the corolla.
  4. It withers away.


Solution

The correct option is B It germinates to form the pollen tube.
Transfer of pollen grains from anther of stamens to stigma is called pollination. After pollination, the pollen grains germinate and elongate to form the pollen tube. The pollen tube grows through the style and reaches the ovule in the ovary and tranfers the male gametes into the ovule.

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