Question

Which one of the following does not have intermediate host?

• A. Tapeworm
• B. Ascaris
• C. Liver fluke
• D. Plasmodium

Answer 1

The correct option is B Ascaris

An intermediary host is a host that harbours a parasite that primarily grows, but not to the point of reaching (sexual) maturity.

• Ascaris doesn't have an intermediary host and completes its life cycle in a single host i.e. humans.
• The intermediate host in the case of tapeworm may be fish, pork, beef etc.
• The intermediate host in the case of liver fluke is a mud snail.
• The intermediate host in the case of Plasmodium is the female Anopheles mosquito.

So, the correct answer is option B.