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Fertilisation in Flowering Plants

1. A pollen grain lands on the stigma of a flower. The grain absorbs water
and splits open.
2. A pollen tube grows out of a pollen grain down the style. There are three
nuclei in the pollen tube - one tube nucleus at the tube's…

Page 2

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Questions:

1. What lands on the stigma of a flower?
2. How many nuclei are found in the pollen tube, and what are their
names?
3. What does the tube grow through when it reaches the ovary?
4. What does the pollen tube release when it is in the embryo…

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