Which of the following is also known as a fluke?

• A. Trematode
• B. Cestode
• C. Nematode
• D. Acanthocephalan

Answer: (A)

Fluke is a common name for trematodes, a group of flatworm parasites. They are usually leaf-shaped and inhabit organs such as the liver, bile ducts, or blood vessels, with life cycles that typically involve a snail as an intermediate host. This combination of body plan and life cycle distinguishes them from other parasitic worms.

Cestodes are tapeworms, which are segmented and lack a digestive system. Nematodes are roundworms with a tubular body and a complete digestive tract. Acanthocephalans have a spiny proboscis and are not trematodes. Examples of flukes include the liver fluke Fasciola hepatica and blood flukes like Schistosoma species.