Out of the following which one is not a hermaphrodite?

Cockroach

The correct answer is Option (4)-  Cockroach

Many animal species exhibit sexual dimorphism, where individuals can be classified as male or female based on their reproductive organs and secondary sexual characteristics. However, there are also species that possess both male and female reproductive organs within the same individual, and they are referred to as hermaphrodites.

Examples of unisexual species (where individuals are distinctly male or female) include mammals like humans, dogs, cockroach and cats. In these species, males have male reproductive organs and females have female reproductive organs .

Earthworms,  sponge, tapeworm and leech, typical examples of bisexual animals that possess both male and female reproductive organs, are hermaphrodites.