Answer:
1. Petals and sepals:
The most prominent part on a bud is made up of small leaf-like structures which are known as sepals.
Explanation:
2. When a flower is a bud, it is said to be closed bud which is surrounded by sepals that protect the flower bud and are behind/underneath the petals when the flower opens. Petals are modified leaves that surround the reproductive parts of flowers.