Question

What is an external parasite? Explain with one example.

Hint:

"External" means attached to the outside of the body.

Answer 1

Step 1: Define ectoparasite:
An external parasite (ectoparasite) is an organism that lives and feeds on the outer surface (skin/body surface) of its host, rather than inside the host's body.

Step 2: Give an example:
Lice living on the human scalp, feeding on blood, are a common example of an external parasite (ectoparasite).

Final Answer:
An ectoparasite lives on the host's body surface; example - lice.