Question

Male and female Ascaris respectively have

• A. Two testes and two ovaries
• B. Two testes and one ovary
• C. One testis and two ovaries
• D. One testis and one ovary

Answer 1

Answer: (C)

One testis and two ovaries

Ascaris belongs to nematodes and is unisexual. Females are usually wider around and 20-40 cm long, while males are usually thinner and grow to be 15-30 cm long. Female worms are straight posterior end while males are hooked.Male Ascaris is monarchic, possessing a single testis which is long, thin and highly twisted tube-like structure while female Ascaris is didelphic i.e., it has two ovaries two oviducts and two uterus. Each ovary is a long, thin thread-like much-twisted tube. Thus, the correct answer is option C.