Question

Give one example of an endospermic dicot seed and non-endospermic seed.

Answer 1

Hint: A dicot seed is a non-endospermic seed in which food is stored in the two cotyledons during the development of the seed endosperm.

Complete answer:
Structure of Dicot Seed: The dicot seed consists mainly of two important components: the seed coat and the embryo. The surface(outer covering)of the seed can be either smooth or wrinkled. The seed coat is covered by the outer seed covering 'Tegmen' and the inner seed covering 'Testa.' A testa is leathery, thick, and firm, while the Tegmen is thin, fragile, visible, and papery. It's in near touch with the testa. A small notch or furrow containing 'Chalaza' is present in the center near the wide end of the seed. The site of attachment of the nucleus and the integuments is in the ovule. A scar, known as hilum, is present at the pointy end on the same side. The seed is bound to the pod by a funiculus or a stalk. A scar, or hilum, develops when the seed is shed.
A small pore known as the micropyle is found near the hilum. It's through this pore that water and air come in. The embryo is enclosed in the seed. The embryo has a short and straight embryonic axis. Slender and small stalks are bound to it by two wide and thick cotyledons or leaves of seed. The tip of the axis of the embryo is a radicle or a potential root. It lies in the direction of the end of the micropyle. The Plumule is positioned deeper between the cotyledons.
Endosperm-containing seeds are called endosperm seeds. Seeds without endosperm are known to be non-endospermic seeds.
Ricinus communis is an example of an endosperm seed plant (Castor). Pisum sativum is an example of a plant having a non-endospermic dicot seed (Pea).

Note: Epicotyl is the area of the embryo between the point of attachment of the cotyledons and the plumule, while hypocotyl is the area between the radicle and the place of origin of the cotyledons. Non-endosperms are found in the majority of dicots, such as peas, grams, beans, and certain monocots, such as orchids.