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 how many nuclei are in a mature pollen grain?

Each pollen grain contains two cells – a vegetative cell and a generative cell or germ cell. Generative cell contains two nuclei – tube nucleus and a generative nucleus. This generative nucleus divides to form two sperm nuclei. Therefore there are total three nuclei (one tube nucleus and two sperm nuclei) present inside mature pollen.

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there are two pollen grains in the mature pollen grain one is vegetative nucleus and another generative nucleus

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A mature pollen grain has 3 nuclei.

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 there are two nucleus in a mature pollen grain vegetative and generative

 

m sry typing mistake...

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2 nuclei. After undergoing meiosis, one pollen mother cell (PMC) produces four microspores. To become mature pollen, each microspore divides mitotically and unequally to produce 2 nuclei (cells) in pollen grain: one cell (small one) is called generative cell and the other one (bigger) is called vegetative cell or pollen tube cell.

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