Name: Germination of Seeds
Uploaded: 2019-07-19
Duration: 2 min 33 s
Description: Germination is the process by which an organism grows from a seed or similar structure. In this video, learn about germination and the factors affecting it.

Question

Draw labelled diagrams showing the structure of the Kidney bean.

Accepted Answer

A seed is the matured and fertilised ovule of a flowering plant (angiosperm) or a gymnosperm (non-flowering seed-producing plant). A kidney bean seed typically consists of the following components:

Seed Coat: The outermost layer of the kidney bean is the seed coat or testa. It is a protective layer that surrounds the inner seed.

Hilum: The hilum is a small scar or mark on the kidney bean where it was attached to the pod or plant. It is the point of attachment to the plant's reproductive structures.

Cotyledons: Inside the seed coat, you'll find two cotyledons. These are the first leaves that emerge during germination and serve as a source of nutrients for the developing seedling.

Embryo: The embryo is the miniature, undeveloped plant within the bean seed. It includes the plumule (embryonic shoot) and the radicle (embryonic root), both of which will grow into the mature plant when the seed germinates.

Hypocotyl: The hypocotyl is the region of the embryo between the cotyledons and the radicle. It plays a role in pushing the cotyledons above the soil during germination.

Plumule: The plumule is the embryonic shoot that will develop into the stem and leaves of the mature kidney bean plant.

Radicle: The radicle is the embryonic root of the kidney bean. It will grow downward into the soil to anchor the plant and absorb water and nutrients.

X denoted Micropyle.

Draw labelled diagrams showing the structure of the Kidney bean.

Seed Coat (Testa): The outermost layer of the seed is the seed coat or testa. It provides protection to the inner contents of the seed.
Hilum: The hilum is a scar on the seed coat where the seed was attached to the mother plant. It&#39;s the point through which the seed receives nutrients during its development.
Micropyle: The micropyle is a small pore in the seed coat near the hilum. It allows for the entry of water during seed germination.
Endosperm: The majority of the interior of the maize seed is occupied by the endosperm. It is a starchy tissue that serves as a nutrient reserve for the developing maize embryo. During germination, the endosperm provides the energy and nutrients needed for the growth of the young plant.
Embryo: The embryo is the miniature plant within the seed. It has three parts:

Important Questions on Seed : Structure, Types and Germination

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