Calyx

Definition

The calyx is the outermost whorl of a flower, consisting of units called sepals. It functions primarily to protect the developing bud and sometimes support the petals when in bloom.

5 Must Know Facts For Your Next Test

1. The calyx is typically green and leaf-like.
2. Sepals can be separate or fused together.
3. In some flowers, the calyx remains after flowering to protect fruit.
4. The number of sepals can vary among different species of angiosperms.
5. Calyx morphology can be used in plant identification.

Review Questions

Related terms

corolla:

The second whorl of a flower, consisting of petals that are often brightly colored to attract pollinators.

sepal: A unit of the calyx, usually green and leaf-like, that protects the flower bud.

receptacle: The part of a flower stalk where the parts of a flower are attached.