Question

The third floral whorl of a flower is called
A.Sepals
B.Petals
C.Stamens
D.Carpels

Answer 1

In flowering plants, the flower is the seed-bearing part. It consists of reproductive organs called stamens and carpels which are mostly surrounded by a brightly colored corolla usually called petals and a green calyx with sepals. In a flower, the petals are the most attractive part.

Complete answer: Explaination for each option is as :
(A) A sepal is a part of the flower of angiosperms (flowering plants) that are generally green, the main function of the sepal is to provide protection to the flower in the bud stage, and regularly supports the petals when in bloom.
(B) Petals are modified leaves that surround the reproductive parts of flowers. They are brightly colored and unusually shaped to attracts the insects and flies which are pollinators. Together, all of the petals of a flower are called the corolla.
(C) The third whorl contains the male reproductive structures and is known as the stamen. The stamen is also called as androecium. It is a male reproductive organ of a flower. It produces pollen which is the male reproductive gamete. The stamen has two parts: anther and stalk. The stalk is also called a filament. The anther contains microsporangia.
(D) Carpel one of the individual female reproductive organs in a flower composed of an ovary, a style, and a stigma also known as the gynoecium. The word pistil is sometimes defined as a single carpel or several carpels fused together.
Hence, the correct option is (C) Stamens.

Note: -There are so many types of flowers based on different positions of ovary and structures and etc
Types of Flower Based on Position of Ovary are-
1.Hypogynous Flower: When the ovary occupies the highest position and other floral parts are below it, the flower is called hypogynous.
2.Perigynous Flower: When the ovary and other parts of the flower are situated at the same level, the flower is called perigynous.