it is called the sepal
There are several structures that may do this:=
Bracts are a modified or specialized leaf, especially one associated with a reproductive structure such as a flower.
Tepals, Sepals and Calys are elements of the perianth, or outer part of a flower.
The bud comes first, then opens into a flower. There isn't really anything that protects the flower after it's open.
the petals protect the bud
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Stigma
Sepals protect the immature flower during the bud stage
What would happen is the plant would die , because no food or water and us humans would die , because we are not receiving any oxygen because the plants are dead
The calyx (which the sepals are the outer part of) protects the bud before it opens. The sepal allows the calyx to open and provides rigid support for the petals and reproductive organs of the flower.
Modified leaf that protects a flower bud
Sepals protect the flower whilst the flower is developing from a bud.
The sepals are the green-leaf like structures that enclose and protect the developing flower. It is a modified leaf in the outermost whorl calyx of a flower. The calyx (which the sepals are the outer part of) protects the bud before it opens. The sepal allows the calyx to open and provides rigid support for the petals and reproductive organs of the flower.
Sepal =D
a sepal
To protect the developing flower bud.
Sepals
The sepals protect the tender parts of the flower in the unopened flower.
The sepal is the part of a flower that protects the bud as it is developing. The sepal is also sometimes known as the calyx.