Which one of the following is $NOT$ an adaptation found in endoparasites?

There is more competition for survival between

Give a suitable example for commensalism.

Which one of the following is most appropriately defined?

What is the interaction between two species called?

Identify the correct statement/s from the following:
$I$. $Cuscuta$ is a chlorophyllous endoparasite.
$II$. The human liverfluke needs only one host to complete its life cycle.
$III$. The life cycle of endoparasite is more complex due to their extreme specialisation.
$IV$. During the course of evolution the host bird's eggs have evolved to resemble the eggs of the parasitic bird.