The diagram above illustrates the life of an endoparasite of livestock. Use it to answer the question below
The secondary host of the parasite is
-
pig
- human
- water snail
- domestic fowl
The correct answer is: A
Explanation
Water Snail: This is the first intermediate host, where the parasite develops before moving on to the next host.
Pig: Pigs can serve as secondary hosts for some liver flukes, as they can become infected by ingesting metacercariae.
Human: Humans can occasionally be hosts but are not typically considered as primary or secondary hosts in the classic life cycle of liver flukes.
Domestic Fowl: Generally not involved in the liver fluke life cycle and are not considered hosts.