4 challenges faced by parasites in their quest to inhabit a biotic environment

Parasite face problem in reproducing, protecting the newly borne ones, face immune system attack of host and their self destructive nature harm the host before completion of their life cycle

Explanation:

Challenges faced parasites in residing within their host body are as follows –  

a)Attack by the host immune system – Parasites has to adopt new strategies to fight against the host immune system or else they will die much before completion of their life cycle.  

b)Parasites could not find a mate with in the host body to reproduce.

c)Harming nature of parasite may lead to destruction of host ability to survive the parasite attack. This might kill the parasite much before the completion of their life cycle. Therefore, parasite have to limit their destructive nature

d)Hostile environment for the newly produced parasite may kill it. Hence immediate defense mechanism for the newly borne is to be provided.