Seed

Definition

A seed is a mature ovule containing an embryonic plant, stored nutrients, and a protective coat. It serves as the primary means of reproduction and dispersal in seed plants, especially angiosperms.

5 Must Know Facts For Your Next Test

1. Seeds consist of three main parts: the embryo, endosperm, and seed coat.
2. Angiosperms produce seeds within fruits, which develop from the ovary after fertilization.
3. The process of germination begins when a seed absorbs water and resumes metabolic activities.
4. Seed dispersal mechanisms include wind, water, animals, and mechanical ejection.
5. Dormancy is a state where seeds delay germination until conditions are favorable for growth.

Review Questions

• What are the three main components of a seed?
• How do angiosperms differ from gymnosperms in terms of seed production?
• Describe one method of seed dispersal and its significance.

Related terms

Embryo:

The young plant within a seed that develops into a mature plant upon germination.

Endosperm: Nutritive tissue that provides food for the developing embryo in angiosperms.

Fruit: A mature ovary of a flower that protects seeds and aids in their dispersal.