Sepals

Definition

Sepals are the outermost parts of a flower that typically function as protection for the flower bud. They are usually green and leaf-like, encasing the developing bloom before it opens.

5 Must Know Facts For Your Next Test

1. Sepals collectively form the calyx, which is often green and resembles leaves.
2. They protect the flower in its bud stage from desiccation and mechanical damage.
3. In some plants, sepals can be brightly colored and resemble petals; these are called petaloid sepals.
4. The number of sepals can vary among species but is usually consistent within species.
5. Sepals are distinct from petals but together with petals, they form the perianth of a flower.

Review Questions

• What is the primary function of sepals in a flowering plant?
• How do petaloid sepals differ from typical green sepals?
• What structure do sepals collectively form?

Related terms

Calyx: The collective term for all the sepals of a flower.

Petal: The part of a flower that is often conspicuously colored to attract pollinators.

Perianth: The non-reproductive part of a flower, consisting of both the calyx (sepals) and corolla (petals).