MCQ
In a food web, each successive trophic level has
- AIncreased total energy
- ✓Less total energy content
- CMore total energy content
- DNon estimated energy content
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$I$. 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.