The structure that is thick to protect some of the reproductive structures in flowers is the sepal.
The structure that is thick and helps protect some of the reproductive structures in flowers is the sepal. Sepals are the outermost part of a flower and are usually green and leaf-like in appearance. One way to find the answer is by looking at the different parts of a flower and their functions. Another way is to consult a reliable source or reference material about flowers.
