Question

An inflorescence with saucer shaped open receptacle bearing flowers like a hypanthodium, found in Dorstenia is called as
A)Hypanthodium only
B)Cyathium
C)Coenanthium
D)Thyrns

Answer 1

An inflorescence is a group of flowers consisting of a main branch or a complex arrangement of branches arranged on a stem. Morphologically is the modified part where flowers are formed in the shoot of seed plants.

Complete answer:
A coenanthium is considered an inflorescence with a nearly flat receptacle with slightly upcurved margins. It is an inflorescence that bears flowers like a hypanthodium with a saucer-shaped open receptacle, which is contained in Dorstenia. Because of their highly diverse growth patterns and life types, Dorstenia is exceptional compared to other members of the Moraceae.
Mostly woody perennials are the Moraceae, while Dorstenia is dominated by herbaceous, succulent or suffrutescent perennials and only 10% show the usual woody habit of the Moraceae. Dorstenia also has a striking reproductive structure consisting of clusters of disc-shaped receptacles of bisexual flowers that are frequently decorated with bracts of variable size and form.

Let us analyze the options to find out the correct option.

Option A: The inflorescence of Hypanthodium is distinguished by a fleshy and closed floral axis that forms a pear-shaped receptacle. Therefore, this is an incorrect option.

Option B: In Euphorbia, Cyathium inflorescence is found. One of the specialized pseudanthias that form the inflorescence of plants is a cyathium. A cyathium is composed of five bracteoles. Therefore, this is an incorrect option.

Option C: Coenanthium is the correct option.

Option D: Thyrns is an incorrect option.

Hence, the correct answer is option (C)

Note: A different type of receptacle is shown by Dorstentia, a member of the same family Moraceae) as the figs.
1)Instead of forming a closed structure, the receptacle here becomes saucer-shaped with the margins slightly bent up.