Question

Ovotestis is found in which animal ………………
A. Snail
B. Cockroach
C. Fly
D. Unio

Answer 1

Hint: A gonad which consists of both testicular and ovarian tissue is called a hermaphroditic gland or an ovotestis. These specialized gonads are usually found in animals which exhibit true hermaphroditism. Gastropods are an example of such a kind of reproductive system.

Complete answer:
The reproductive system of gastropods exhibits a type of true hermaphroditism. The members like snails and slugs have a specialized gonad called ovotestis. These gonads consist of both testicular and ovarian tissues. The ovotestis is a common feature in most of the invertebrates which exhibit true hermaphroditism.
Considering other options: B. The reproductive system in cockroaches is very distinct in both the sexes. They are unisexual animals with distinctive reproductive organs present in the males and females. They are dioecious.
C. The reproductive system in flies is also very distinct in both the sexes. They too are unisexual animals with distinctive reproductive organs present in the males and females. The females are larger than the males.
D. Unio is also a dioecious animal with distinctive sexual features in the males and females. The gonads lie in the coils of the intestine and are paired structures. The sexes although separate there is no sexual dimorphism.

So, the correct answer is “Option A”.

Note:
Ovotestis being a specialized gonad is usually seen in invertebrates which shows true hermaphroditism such as snails. The only mammals in which ovotestes occur not as a case of gonadal abnormality are moles. Ovotestis can rarely occur in humans associated with gonadal dysgenesis.