Louse is an ectoparasite of

Discuss the various types of positive interactions between species.

Camouflage is an important mechanism where

The interaction between two living organisms of different species which is beneficial to both but is not obligatory because they can live without each other is known as

Choose the correct option for population interaction.

Match the pairs of partners showing interspecific interaction from Column-$I$ and Column-$II$:

Column-$I$	Column-$II$
$a$. Sea anemone	$i$. Cyanobacteria
$b$. Plant	$ii$. Man
$c$. Plasmodium	$iii$. Herbivore
$d$. Fungi	$iv$. Clown fish