Question

Hypanthodium is?
A) Thalamus
B) Fruit
C) Inflorescence
D) Ovary

Answer 1

Hypanthodium is basically a receptacle which forms a hollow cavity and also has an apical opening which is protected by scales.

Complete answer:
Let us analyse the options to find the correct answer.

Option A: Thalamus is basically a swollen, basal part of the pedicel of stalk and it has no relation with hypanthodium. Therefore, this is the incorrect option.
Option B: When an ovary is fertilized and ripens it forms a fruit. Fruit is present in angiosperms and also in flowering plants. Therefore, this is the incorrect option.
Option C: Inflorescence can be defined as the way in which the flowers are arranged on the floral axis of the plant. Hypanthodium is a type of inflorescence in which the fleshy receptacle forms a hollow cavity and has an opening which is known as ostiole. Therefore, this is the correct option.
Example of hypanthodium is ficus.
Option D: Ovary is a part of the female reproductive system of a plant and it is the swollen basal part of the carpel. Therefore, this is the incorrect option.

Thus, the correct option is (C) Inflorescence.

Note: There are different types of inflorescence,

Racemose - In this type, the flower branches laterally on the floral axis.
Compound - In this, the main axis branches once or twice in cymose or racemose manner.
Cyathium - It has a cup shaped involucre which has a nectar secreting glands.
Cymose - The flower is the terminating point of the each floral axis in this type of inflorescence.