Cotton fibre is basically a type of

The given figure shows the germination of a bean seed. Label $P, Q, R$ and $S$.

Identify $X$ in the given figure of a maize grain.

$A$ type of seed germination in which the epicotyl region of the embryo elongates rapidly to pull the plumule out of the soil surface is called . . . . . . germination.

Cotyledons and testa respectively are edible parts in

Single shield-shaped cotyledon of a maize seed is called$:-$