Medium
What is the approximate diameter of a pollen grain?
- A$25-50$ $\mathring{A}$
- B$25-50$ $\text{micron}$
- C$20-25$ $\text{micrometre}$
- D$25-50$ $\text{micrometre}$
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Similar Questions
How many meiotic divisions are necessary to produce $100$ pollen grains?
MediumAIIMS 1993
View SolutionWhich is an incorrect statement?
$I$. Each cell of sporogenous tissue in anther is capable of giving rise to a microspore tetrad.
$II$. The pollen grain represents the male gametophyte.
$III$. Pollen grains are usually triangular and $10-15 \mu m$ in diameter.
$IV$. Sporopollenin is one of the most resistant organic materials,which can be destroyed only by strong acids and alkalis.
$I$. Each cell of sporogenous tissue in anther is capable of giving rise to a microspore tetrad.
$II$. The pollen grain represents the male gametophyte.
$III$. Pollen grains are usually triangular and $10-15 \mu m$ in diameter.
$IV$. Sporopollenin is one of the most resistant organic materials,which can be destroyed only by strong acids and alkalis.
Medium
View SolutionWhat is the intine of a pollen grain made of?
Medium
View SolutionHow many pollen grains are formed from $10$ microspore mother cells by meiosis?
MediumAIPMT 1996
View SolutionIn angiosperms,the wall surrounding all four microspores of a microspore tetrad is made up of which substance?
Easy
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