In each pollen sacs a large number of pollens or microspores are produced by
A. Mitosis
B. Meiosis
C. Regeneration
D. Fragmentation
Answer: Option B
Solution(By Examveda Team)
In a process called microsporogenesis, four haploid microspores are produced from each diploid sporogenous cell (microsporocyte, pollen mother cell or meiocyte), after meiotic division. After the formation of the four microspores, which are contained by callose walls, the development of the pollen grain walls begins.Related Questions on Biology
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B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate
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B. decrease in the ozone layer in troposphere
C. decrease in thickness of ozone layer in stratosphere
D. increase in the thickness of ozone layer in troposphere
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B. gymnosperms
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Pollination is best defined as
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B. germination of pollen grains
C. growth of pollen tube in ovule
D. visiting flowers by insects
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