Scutellum

Definition

The scutellum is a specialized, shield-like cotyledon found in the embryos of grass family plants, such as maize and wheat. It facilitates the absorption of nutrients during seed germination.

5 Must Know Facts For Your Next Test

1. The scutellum is unique to monocotyledonous plants, particularly within the Poaceae family.
2. It plays a crucial role in transferring stored food from the endosperm to the developing embryo.
3. The scutellum contains enzymes that break down starches and proteins in the endosperm into simpler substances.
4. During germination, the scutellum remains attached to the embryo and does not emerge from the soil.
5. It is often considered analogous to the cotyledons found in dicotyledonous plants but has distinct structural and functional differences.

Related terms

Cotyledon:

The first leaf or first pair of leaves produced by an embryo of a seed plant, serving as a food source during early development.

Endosperm: Nutritive tissue surrounding the embryo within seeds of flowering plants, providing essential nutrients for growth.

Monocotyledon: A group of flowering plants (angiosperms) characterized by having one cotyledon in their seeds.