Fill in the blanks

Species $A $	Species $B$	Type of Interaction	Example
$+$	$-$	$(a)$	$(b)$
$+$	$+$	$(a)$	$(d)$
$+$	$(e)$	Commensalism	$(f)$

Statements

$I.$ Recent studies support competition as suggested in 'Gauses's Competitive Exclusion Principle'

$II.$ Gause's hypothesis says if two species compete for same resources then one will be eliminated by another species

$III.$ More recent studies point out that species facing competition might evolve mechanisms that promote co-existence rather than exclusion

$IV.$ Gause's competitive exclusion principle is effective when resources are in excess

$V.$ Unlimited resources give better opportunity for adaptation

Choose the correct combination of statements

Mycorrhiza, a relationship between fungi and roots of higher plants is

It is much easier for a small animal to run uphill than for a large animal, because