When the pollen grain is mature, it contains two cells, the _____A______ and ____B_____ . AB1generative cellspore mother cell2vegetative cellspore mother cell3spore mother cellmale gamete4vegetative cellgenerative cell

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When the pollen grain is mature, it contains two cells, the _____A______ and ____B_____ .

	A	B
1	generative cell	spore mother cell
2	vegetative cell	spore mother cell
3	spore mother cell	male gamete
4	vegetative cell	generative cell

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answer is D.

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Detailed Solution

When a pollen grain is mature it contains two cells, a vegetative cell and generative cell. The vegetative cell is bigger, has abundant food reserve and a large irregularly shaped nucleus. The generative cell is small and floats in the cytoplasm of the vegetative cell. It is spindle-shaped with dense cytoplasm and a nucleus.

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