Question

Which of the following have zygomorphic flowers?

• A. Gulmohar
• B. Mustard
• C. Hibiscus
• D. Canna

Answer 1

The correct option is A

Gulmohar

The correct option is A.

Explanation of correct option

1. Zygomorphic flowers are those which can be divided into equal halves in only one plane.
2. Gulmohar belongs to the family Leguminosae.
3. They have unequal-sized petals hence the flower can not be divided into equal halves in any plane.

Explanation of incorrect options

Option B:

1. Mustard has actinomorphic flowers.
2. They have floral parts that are the same in size and can be divided into equal halves in any plane.

Option C:

1. Hibiscus also has actinomorphic flowers.
2. It can be divided into equal halves in any plane.

Option D:

1. Canna belongs to the family Cannaceae.
2. The Canna flower has three sepals in the calyx and three petals in the corolla which are arranged spirally.
3. Hence the flower cannot be divided into equal halves by vertical section.
4. Which makes the flower irregular and asymmetric.

Final answer: Gulmohar has zygomorphic flowers.