Question

Pedicellate bisexual flowers borne acropetally on an elongated peduncle form an inflorescence called
A) Spike
B) Corymb
C) Raceme
D) Catkin

Answer 1

The flowers having both male and female reproductive organs are known as full or bisexual flowers and this type of flowers having the capability of self-pollinate themselves. Pedicellate stands for that flower having the stem which attaches to a single flower.

Complete answer:
Acropetal order is the placement of plant flowers in which the plant’s pedicel in such a manner that new flowers and new buds are at the apex and the older flowers are placed at the base.
Spike is peduncle consist bisexual and sessile flowers and kind of racemose inflorescence. Examples are Achyranthes and Adhathoda.
A corymb is lower flowers have long pedicels than spikes and axes is brief. It is a sort of racemose inflorescence. Examples are Iberis and Capsella.
Raceme is peduncle having bisexual and pedicellate flowers organized acropetally. It is a kind of racemose inflorescence. Examples are Larkspur and radish.
Catkin is the pendulous spike in leaf axis that bears unisexual flowers. It is a sort of racemose inflorescence. Examples are Morus, birch, and oak.

Hence, the correct answer is option ‘C’ Raceme.

Note: The flowers having either only the male or female reproductive organs are called unisexual flowers and known as incomplete flowers. They can only reproduce by cross pollination.Basipetal order is the opposite term of acropetal. In this new flowers are placed at the bottom and the relatively older flowers are placed at the top.