Question

The group of petals is called as
(a)Sepals
(b)Calyx
(c)Root
(d)None of the above

Answer 1

Hint: Petals are the individual unit of the second set of floral organs. It is situated in between the calyx and the androecium. It is the most conspicuous and attractive part of the plant. It is colored and scented. It is a nonessential whorl.

Complete answer:
A group of petals is called the corolla. Corolla constitutes the second set of floral organs. Petals are generally thin, delicate, brightly colored, and sometimes sweet-smelling. This makes the flowers conspicuous, showy, and attractive. In some flowers, petals are thick, succulent, and green in color. Such petals are said to be sepaloid. When both the calyx and corolla are present in a flower, it is described as dichlamydeous. But when only a single whorl of perianth is present, the flower is said to be mono chlamydeous. In all such cases, it is the corolla which is considered to be absent, and the flower is described as apetalous. Just as sepals, petals may be either free from one another or they may be united either wholly or partially. In the former case, the corolla is said to be polypetalous and in the latter, it is called Gamopetalous.

Additional Information: - In the polypetalous corolla, the petals are often provided with a small, narrow, stalk-like lower portion, called claw, and the upper expanded portion, the limb. Such petals are said to be clawed.
-In the gamopetalous corolla, the lower portion is known as the tube, and the upper portion, the limb.
-The upper portion is often lobed, the number of lobes indicating the number of petals constituting the corolla.
So, the correct answer is 'None of the above'

Note: - In some cases, corolla develops a number of outgrowths or appendages, which may be in the form of small lobes or long hairy structures.
-All such appendages are called coronal outgrowths, or collectively the corona. They add to the attraction of the corolla.
-In some plants such as peas, the corolla is butterfly-like and called papilionaceous. Corolla can be regular or irregular. In the former, petals are uniform in size and shape and are symmetrically arranged. But, in the latter, they are dissimilar in size and shape and asymmetrical in the arrangement.