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Define microspore....

Define microspore.

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Assertion : In a microsporangium, the tapetal cells possess little cytoplasm and generally have a single prominent nucleus. Reason : During microsporogenesis, the microspore mother cells (M M Cs) undergo mitotic divisions to produce hapliod microspore tetrads.

Assertion : Pollen grains are the immediate product of meiosis of the microspore mother cell. Reason : The pollen grain have diploid number of chromosomes.

Arrange the following terms in the correct developmental sequence : Pollen grain , sporogenous tissue, microspore tetrad ,pollen mother cell, male gametes .

A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds. What is the minimum number of microspore mother cells involved in this process?

Distinguish microspores and pollen grains.

With the help of labelled diagrams depict the stages of a microspore maturing into a pollen grains.

Name the process through which microspore tetrads are formed . What would be the ploidy of the cells of tetrad ?