Question

Differentiate between hypogeal and epigeal germination.

Answer 1

Germination:

1. Germination is the process of developing a plant from a seed.
2. It of two types: hypogeal and epigeal germination.

Hypogeal germination:

1. The epicotyl elongates and the cotyledons remain below or on the surface of the ground.
2. This type of germination of the seed is known as hypogeal germination.

Epigeal germination:

1. The hypocotyl elongates forcing the cotyledons above the ground.
2. This type of germination is known as epicotyl germination.

Hypogeal germination	Epigeal germination
1.Cotyledons are below the surface of soil.	1. Cotyledons are above the surface of the soil.
2. Less elongation of hypocotyl takes place.	2. Excessive elongation of hypocotyl occurs.
3. Epicotyl is long.	3. Epicotyl is short.
4. Cotyledons do not perform photosynthesis.	4. Cotyledons perform photosynthesis because cotyledonary leaves are present.
5. Example: coconut and gram.	5. Example: onion and bean.