Medium
The intine of pollen grains is composed of
- ALipid and protein
- BCellulose and pectin
- CLignin and cutin
- DPectin and lignin
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Assertion: If pollen mother cells have $42$ chromosomes,the pollen has only $21$ chromosomes.
Reason: Pollens are formed after meiosis in pollen mother cells.
Reason: Pollens are formed after meiosis in pollen mother cells.
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$\quad\quad\quad P\quad\quad\quad\quad Q$
$\quad\quad\quad P\quad\quad\quad\quad Q$
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