Question

Inflorescence consisting of unisexual sessile flowers is?

• A. Spike
• B. Spikelet
• C. Catkin
• D. Umbel

Answer 1

Answer: (C)

Catkin

A. Spike in which peduncle has bisexual and sessile flowers. It is a type of racemose inflorescence. An example is Achyranthes.

B. Spikelet is a small and special spike. Flowers are produced in the axil of fertile bracts called lemma. It is a type of racemose inflorescence. Example: wheat.

C. Catkin is a pendulous spike in leaf axis which bears unisexual and sessile flowers. It is a type of racemose inflorescence. Example: oak.

D. Umbel in which the main axis is reduced very much and all flowers appear to be arising from the same point. At the base of flowers, a cluster of bracts forms an involucre. It is a type of racemose inflorescence. An example is Hydrocotyle.

So, the correct answer is 'catkin'.