Question

Syncarpous gynoecium has two or more
A) Free carpels
B) Fused carpels
C) Free ovaries
D) All of the above

Answer 1

Hint:Gynoecium is defined for the floral parts that participate in ovule production thereby ultimately leading to the development of fruits and seeds.

Complete answer:
Gynoecium represents the innermost floral whorl consisting of pistils surrounded by pollen producing reproductive organs thereby leading to the production of fruits and seeds. This floral structure is responsible for the production of female gametophytes and those flowers that lacks the presence of this gynoecium are called staminate.
Option A: Most of the flowers have 4 or more free carpels often referred to as apocarpous. This type of the carpel arrangement is a characteristic feature of the Crassulaceae (4 to 5 free carpels) and Ranunculaceae (5 to infinite free carpels). Therefore, this is the incorrect option.
Option B: The carpels of the flowers may exhibit complete fusion. Sometimes, these are fused either by their stigmas or their styles; yet they possess distinct ovaries. The fused carpels sometimes may be referred to as a single compound ovary. Syncarpous gynoecium is an example of flower with fused carpels. Therefore, this is the correct option.
Option C: Ovary is a female reproductive organ where you have the egg or ova production. This is the hollow base of your floral carpel containing one or more ovules. Thus, this is an incorrect option for the given question. Therefore, this is the incorrect option.
Option D: As only one of the above options is correct, therefore, this is the incorrect option.

Thus, the correct option is B) fused carpels.

Note:Syncarpous gynoecium is present in the case of tulips, tomato, and also in members of liliaceae family. On the contrary, apocarpous gynoecium is found in rose, lotus, etc.