Biology, asked by kumarhitesh1400, 1 year ago

Example+of+plants+which+shed+their+pollen+grains+at+2+celled+stage

Answers

Answered by 766govind
0

Answer:

Explanation:pata ni bhai

Answered by narayanareddysingamr
0

Answer:

Explanation: In over 60 % of angiosperms, pollen grains are shed at this 2-celled stage tube cell orvegetative cell generative cell. In the remaining species, the generative celldividesmitotically to give rise to the two male gametes before pollen grains are shed tubecell orvegetative cell two male gamete 3-celled stage. In 3 celled stage, the pollen grains further germinate on the stigma to produce pollen tubethrough one of the germ pores. The contents of the pollen grains move into the tube pollentube grows through the .tissues of the stigma and style and reaches to ovary. Inplants, when pollen grainare shed at 2 celled stage the generative cell divides and formtwo male gametes during the growth of the pollen tube in the stigma.  

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