Question

Give reasons why: 

(i) most zygotes in angiosperms divide only after certain amount of endosperm is formed.

(ii) groundnut seeds are exalbuminous and castor seeds are albuminous.

Answer 1

(i) To obtain nutrition from the endosperm for the developing embryo, zygotes, divide after itsformation.

(ii) The groundnut seeds are exalbuminous because the endosperm is completely consumed during embryo den. Whereas, castor seeds are albuminous because the endosperm persists and is used up during seed germination.