Coleorhiza

Definition

Coleorhiza is a sheath-like structure that protects the radicle in monocot seeds during germination. It helps in anchoring the seedling to the soil as the radicle grows out.

5 Must Know Facts For Your Next Test

1. Coleorhiza is present only in monocot seeds and not in dicot seeds.
2. It surrounds and protects the radicle until it emerges from the seed coat.
3. The coleorhiza plays a crucial role in water absorption during seed germination.
4. After the radicle emerges, the coleorhiza disintegrates as its function is complete.
5. It helps in anchoring the young plant to the soil by facilitating initial root penetration.

Related terms

Radicle: The embryonic root that emerges first during seed germination.

Monocot: A type of flowering plant with one cotyledon, or seed leaf.

Seed Coat: The protective outer layer of a seed that safeguards its contents until conditions are right for germination.