Medium
Pollen grains are generally . . . . . . in outline measuring . . . . . . micrometers in diameter.
- ASpherical,$25-50$
- BOblong,$25-50$
- COval,$10-25$
- DSpherical,$75-100$
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Similar Questions
Among the following statements related to pollens, choose the correct one.
Statement $I$: In $40\%$ of angiosperms, pollen grains are shed at the $3$-celled stage.
Statement $II$: Intine is made of cellulose and pectin, and it is discontinuous with germ pores.
Statement $I$: In $40\%$ of angiosperms, pollen grains are shed at the $3$-celled stage.
Statement $II$: Intine is made of cellulose and pectin, and it is discontinuous with germ pores.
The middle layers of the microsporangium are located between which of the following layers?
Medium
View SolutionWhich of the following is surrounded by a carbohydrate-rich wall?
Easy
View SolutionIf there are $1280$ microspores in a tetralocular anther,how many microspore mother cells will be there in its each pollen chamber?
In a microsporangium,which layer is generally having more than one nucleus?
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