Which one of following is most appropriately defined?

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11.Organisms and Populations

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Which one of the following is most appropriately defined?

Host is an organism which provides foodto another organism.

Amensalism is a relationship in which one species is benefitted whereas the other is unaffected.

Predator is an organism that catches and kills other organism for food.

Parasite is an organism which always lives inside the body of other organism and may kill it.

(AIPMT-2010)

Solution

(c) : Predation is an interaction between members of two species in which members of one species capture, kill and eat up members of other species. Host is a term which is specifically related to parasitism. Amensalism is an interspecies interaction in which one species is harmed whereas the other one is unaffected. Parasitic organism can live both over the surface of their host or inside their body.

Standard 12

Biology

Carnivorous animals – lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as

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(NEET-2019)

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 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:

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(NEET-2023)

Match the columns :

Column – $I$ Column – $II$

(a) Mutualism $(i)$ $\quad$ Diapause

(b) Commensalism $(ii)$ Hibernation

(c) Parasitism $(iii)$ Dormancy

(d) Predation $(iv)$ Aestivation

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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 they establish ?

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Territoriality occurs as a result of

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Column – $I$	Column – $II$
(a) Mutualism	$(i)$ $\quad$ Diapause
(b) Commensalism	$(ii)$ Hibernation
(c) Parasitism	$(iii)$ Dormancy
(d) Predation	$(iv)$ Aestivation

Which one of the following is most appropriately defined?

Solution

Similar Questions

Carnivorous animals – lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as

Match the columns : Column – $I$ Column – $II$ (a) Mutualism $(i)$ $\quad$ Diapause (b) Commensalism $(ii)$ Hibernation (c) Parasitism $(iii)$ Dormancy (d) Predation $(iv)$ Aestivation

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 they establish ?

Territoriality occurs as a result of

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Match the columns :

Column – $I$ Column – $II$

(a) Mutualism $(i)$ $\quad$ Diapause

(b) Commensalism $(ii)$ Hibernation

(c) Parasitism $(iii)$ Dormancy

(d) Predation $(iv)$ Aestivation