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1.Sexual Reproduction in Flowering Plants
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Which is incorrect statement?
$I$. Each cell of sporogenous tissue in anther is capable of giving rise to microspore tetrad.
$II$. The pollen grain represent male gametophyte.
$III$. Pollen grains are usually triangular and $10-15 \mu m$ in diameter.
$IV$. Sporopollenin is one of the most resistance organic material which can be destroyed only by strong acids
and alkali.
A$I$, $II$ are incorrect but $III$, $IV$ are correct
B$III$, $IV$ are incorrect but $I$, $II$ are correct
C$I$, $III$ are incorrect but $II$, $IV$ are correct
D$II$, $IV$ are correct but $I$, $III$ are incorrect
Solution
Pollens are spherical and average size is $25-50 \mu m$.
Sporopollenin donot get destroyed by any known chemical.
Sporopollenin donot get destroyed by any known chemical.
Standard 12
Biology
Similar Questions
Make the correct pair :
| Column $- I$ | Column $- II$ |
| A- Tapetum | i- Degenerate during development |
| B- Intine | ii- Resistant organic materials |
| C- Vegetative cell | iii- Pollen tube |
| D- Sporopollenin | iv- Provide nourishment to pollen grains |
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