Which of the following animals is unisexual?a)Cockroachb)Earthwormc)Sponged)LeechCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Cockroach is unisexual as both male n female cockroaches exists.... Earthworm, leech, sponges all were bisexual. Or hermaphrodite.. Or monocious..

But cockroach is diocious...

Answer

Cockroach has separate male and female bodies, hence it is unisexual. Rest all the animals listed are hermaphrodites in which male and female gametes are produced in the same animal body.
So, the correct answer is option A.

Answer

Earthworms,sponges and leech are hermaphrodites (both Male and female gametes present a same individual).

but in Cockroach male and female are separated or not present in a same individual so ,
Cockroach is unisexual.

Answer

Earthworm,sponge,leech are hermaphrodite(have both male and female in them)
but in cockroach is unisexual (male and female are separate)

Answer

Cockroach has separate male and female bodies, hence it is unisexual. Rest all the animals listed are hermaphrodites in which male and female gametes are produced in the same animal body.
So, the correct answer is option A.

Answer

Unisexual animals are those that have separate sexes, meaning there are distinct male and female individuals. In the given options, the unisexual animal is the Cockroach.

Cockroach:
- Cockroaches are insects that belong to the order Blattodea. They are widely distributed and can be found in various habitats.
- Cockroaches exhibit sexual dimorphism, meaning there are clear physical differences between males and females.
- The male cockroach has a pair of long and thin structures called cerci at the rear end of its abdomen, while the female does not have these structures.
- The male cockroach also possesses a more developed pair of wings compared to the female, which has shorter wings or sometimes even no wings at all.
- The reproductive organs of the male cockroach include a pair of testes and a tubular structure called the vas deferens, which carries sperm.
- On the other hand, the female cockroach has a pair of ovaries that produce eggs, and a tubular structure called the oviduct, which carries eggs to the genital opening.
- The mating in cockroaches is accomplished through a process called copulation, where the male inserts a structure called the aedeagus into the female's reproductive tract to transfer sperm.
- After fertilization, the female cockroach produces egg cases or oothecae, which contain multiple eggs and are deposited in suitable locations.

Other options:
- Earthworms are hermaphroditic, meaning they have both male and female reproductive organs in the same individual. They can exchange sperm with another earthworm during mating.
- Sponges are also hermaphroditic, with both male and female reproductive cells present in the same sponge. They can reproduce both sexually and asexually.
- Leeches are hermaphroditic as well. They have both male and female reproductive organs and can exchange sperm during mating.

Therefore, among the given options, the Cockroach is the only unisexual animal, while the others are hermaphroditic.

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