Fill in the blanks:
Species $A$ Species $B$ Type of Interaction Example $+$ $-$ $(a)$ $(b)$ $+$ $+$ $(c)$ $(d)$ $+$ $(e)$ Commensalism $(f)$
| Species $A$ | Species $B$ | Type of Interaction | Example |
|---|---|---|---|
| $+$ | $-$ | $(a)$ | $(b)$ |
| $+$ | $+$ | $(c)$ | $(d)$ |
| $+$ | $(e)$ | Commensalism | $(f)$ |
(A) Parasitism: In this interaction,one species benefits $(+)$ while the other is harmed $(-)$.
$(b)$ Cuscuta: It is a parasitic plant that derives nutrition from the host plant.
$(c)$ Mutualism: In this interaction,both species benefit $(+)$.
$(d)$ Lichen: It represents a mutualistic relationship between algae and fungi.
$(e)$ $0$: In commensalism,one species benefits $(+)$ and the other is neither harmed nor benefited $(0)$.
$(f)$ Orchid on mango branch: The orchid (epiphyte) gets support,while the mango tree is unaffected.
$(b)$ Cuscuta: It is a parasitic plant that derives nutrition from the host plant.
$(c)$ Mutualism: In this interaction,both species benefit $(+)$.
$(d)$ Lichen: It represents a mutualistic relationship between algae and fungi.
$(e)$ $0$: In commensalism,one species benefits $(+)$ and the other is neither harmed nor benefited $(0)$.
$(f)$ Orchid on mango branch: The orchid (epiphyte) gets support,while the mango tree is unaffected.
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$I.$ Recent studies support competition as suggested in 'Gause's Competitive Exclusion Principle'.
$II.$ Gause's hypothesis states that if two species compete for the same resources,then one will be eliminated by the other 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.
$I.$ Recent studies support competition as suggested in 'Gause's Competitive Exclusion Principle'.
$II.$ Gause's hypothesis states that if two species compete for the same resources,then one will be eliminated by the other 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.
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