The megasporangium transforms into a/an ...... .

Presence of an impermeable coating around fruits and seeds and small or large air cavities is a characteristic feature of:

The sheaths enclosing the plumule and radicle respectively in a monocot seed are

In the figure given below,identify the seed and the pericarp.

Given the list: $I -$ Castor,$II -$ Coconut,$III -$ Wheat,$IV -$ Rice,$V -$ Maize,$VI -$ Groundnut,$VII -$ Bean,$VIII -$ Pea. Categorize these into albuminous (endospermic) and ex-albuminous (non-endospermic) seeds.
Albuminous seeds $\quad\quad$ Ex-albuminous seeds

In some plants,the thalamus contributes to fruit formation. Such fruits are termed as: