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Course: Class 12 Biology (India) > Unit 2

Lesson 3: Pollination and double fertilization
Science
Class 12 Biology (India)
Sexual reproduction in flowering plants
Pollination and double fertilization
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Pollen-pistil interaction

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Problem

A botanist studies the effect of pollination on a flower. She observes the following events:
  • The pollen grains on the stigma germinate.
  • One of the cells in each pollen grain divides to give rise to gametes.
  • Following cell division, pollen grains produce pollen tubes that carry the contents of each grain towards the ovary.
Based on these observations, which of the following conclusions can be drawn about the nature of the pollen grains?
Choose 1 answer: