Botany - Sexual Reproduction in Flowering Plants Question with Solution | TestHub

The outermost cell layer of the endosperm (3n) of seed is called aleurone layer. Since the cells of aleurone layer are triploid, the number of chromosomes would be $\frac{42}{2}\times 3=21\times 3=63$, root tip cells ( $2n$ ) has 42 chromosomes.