Question

Cruciform corolla is found in
A) Pisum
B) Radish
C) China rose
D) Sunflower

Answer 1

Corolla is nothing but the petals of a flower. Petals are modified leaves which are present around the reproductive parts of the flower.

Complete answer:
Let us know a little bit more about corolla first. Corolla is basically the second whorl of a flower and consists of petals. The petals are usually bright coloured and they have two major functions,
Protect the reproductive parts of the flower.
Attract various insects and pollinators.

Option A: Pisum belongs to the fabaceae family and they have a vexillary aestivation. Therefore, this is the incorrect option.
Option B: In Radish, cruciform corolla is found. Cruciform corolla is basically a type of corolla in which the four free petals are equal and are arranged in the form of a cross. They are a type of polypetalous corolla. Also, cruciform corolla is found in the family Brassicaceae to which radish belongs. Therefore, this is the correct option.
Option C: In China Rose, the corolla is polypetalous but the petals are fused at the base. Therefore, this is the incorrect option.
Option D: In sunflower, cruciform corolla is not seen and instead they have strap shaped corolla.

Therefore, option ‘b’ is the correct answer.

Note: The various types of corolla are,

Polypetalous irregular
Polypetalous regular
Gamopetalous irregular
Gamopetalous regular