(a) What are Ectoparasites and Endoparasites?
(b) List any three parasitic adaptations in animals.

Explanation

Ectoparasites are the parasites that live on the outer surface of the host and generally attach themselves during feeding, e.g. leech, ticks, bed bugs etc.
Endoparasites are parasites that live inside the body of the host.
e.g. malarial parasite in RBC, Ascaris and Taenia in the gut of man etc.
Parasites develop special arrangements such as presence of adhesive organs or suckers to cling to the bost, loss of digestive systems and high reproductive capacity and loss of unnecessary sense organs.