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Pollen Pistil Interaction

How many cell...

Question

How many cells are present in the pollen grains at the time of their release from anther? Name the cells. [2]

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Solution

Pollen grains may be released at :
(i) 2-celled stage having one vegetative and one generative cell. [1]
(ii) 3-celled stage having one vegetative cell and two male gametes. [1]

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Q. A pollen grain in angiosperm at the time of dehiscence from an anther could be 2 - celled or 3 - celled. Explain. How are the cells placed within the pollen grain when shed at a 2 - celled stage? [2]

Question 20

An anther has 1200 pollen grains. How many pollen mother cells must have been there to produce them?

Q. How many pollen grains and ovules are likely to be formed in the anther and the ovary of an angiosperm bearing 25 microspore mother cells and megaspore mother cells respectively?

If there are 4 pollen mother cells in anther, what will be the number of pollen grains?

Q. If there are

4

pollen mother cells in anthers, what will be the number of pollen grains

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