Who proposed the Competitive Exclusion Principle?

Which kind of relationship is seen between a mango tree and an orchid that grows on the branch of the mango tree?

Competition for food,light,and space is most severe between two:

Given below are two statements:
Statement $I:$ Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior one will be eliminated eventually.
Statement $II:$ In general,carnivores are more adversely affected by competition than herbivores.
In the light of the above statements,choose the correct answer from the options given below:

In an association of two animal species,one is a termite which feeds on wood and the other is a protozoan $Trichonympha$ present in the gut of the termite. What type of association do they establish?

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