Question

Given below is a longitudinal section of a bean seed. Label the parts marked 1 to 5 and write their functions.

Answer 1

1. Testa (seed coat)
2. Plumule
3. Radicle
4. Micropyle
5. Cotyledon

1. Testa (seed coat) — It protects the seed from insects and bacteria as well as from a mechanical injury.

2. Plumule — Plumule develops into a shoot.

3. Radicle — Radicle develops into a root

4. Micropyle — The micropyle absorbs as much water as is required for germination.

5. Cotyledon — Contain stored food material which is used by the seeding during germination.