The calyx performs a crucial role for the flowering plant. As the flower is forming, it is closed tightly into a bud. The sepals are the outer covering of the flower as it forms and are the only thing you see of the flower while it is still in bud form. It protects the developing flower and prevents it from drying out.

What is importance of calyx?

Calyx. The calyx is made up of sepals, green leaf-like structures that enclose the unopened bud. They serve a protective role for the flower before it opens, and afterward extend from the base of the flower.

What is the calyx in a flower?

The outermost whorl of the flower has green, leafy structures known as sepals. The sepals, collectively called the calyx, help to protect the unopened bud. The second whorl is comprised of petals—usually, brightly colored—collectively called the corolla.