Question: 155. Which of the following is an example of a zygomorphic flower?
(1) Petunia
(2) Datura
(3) Pea
(4) Chilli
Answer: Option (3)
Explanation:
A zygomorphic flower is one that can be divided into two equal halves only along a single plane of symmetry. Such flowers show bilateral symmetry.
Pea (family Fabaceae) has a characteristic papilionaceous corolla, in which the standard, wings, and keel are arranged in a way that the flower exhibits only one plane of symmetry. Hence, pea is zygomorphic.
Petunia, Datura, and Chilli have actinomorphic (radially symmetrical) flowers.
Therefore, the correct example of a zygomorphic flower is Pea.