MCQ
First mammals appeared in the period
- ✓Triassic
- BJurassic
- CCretaceous
- DTertiary
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$I$. 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.