MCQ
The structure present in nature which is living and non-living both is
- AProtista
- BMonera
- ✓Virus
- DBacteria
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$A$ - number of chromosomes in endosperm
$B$ - number of chromosomes in egg cell
$C$ - number of chromosomes in polar nuclei
$(ii)$ Stomata regulate the process of ....$b$..... and gaseous exchange