AP BIOLOGY

Detailed explanation-1: -Non-endospermic seeds or exalbuminous seeds do not have endosperm as they are completely consumed by the developing embryo and fills the cotyledon with stored food. Legumes, oak, squash, radish, sunflower are some of the examples with such seeds.

Detailed explanation-2: -The seeds without endosperm are called non-albuminous seeds. Q. Assertion :Ex-albuminous seeds do not posses any residual endosperm, as it is completely consumed during embryo development. Reason: Wheat, castor, pea and groundnut are all the examples of ex-albuminous seeds.

Detailed explanation-3: -Solution: Pericarp is fruit wall and it is not a part of seed.

Detailed explanation-4: -Most of the monocotyledonous seeds are endospermic except orchids which are non-endospermic.

Detailed explanation-5: -The endosperm contains the nutrients stored in it. It provides nutrients to the seed in the form of starch, carbohydrates and proteins to support the embryo during germination. It is located below the seed coat.