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Q56) Consider the following table where + means positive effect on the species, - means negative effect on the species and 0 represents no effect on the species.

S No.  

Species A  

Species B  

Kind of interaction

i)

     +

     +

    Competition

ii)

     -

     -

      Predation

iii)

     +

     -

     Parasitism

iv)

     +

     -

     Mutualism

v)

     +

     0

  Commensalism

vi)

     -

     0

    Amensalism

Which of the above correctly represents the effect on the species with the kind of interaction taking place?


  1. c) Only i and v

  2. b) Only i, ii and iii

  3. a) Only ii, iii and v

  4. d) Only iii, v and vi


Solution

The correct option is D d) Only iii, v and vi
D)
Explanation:

Competition:Competition is when organisms compete for the same resources. This is a negative relationship because both organisms are harming each other.
Predation: This is where one organism hunts and eats the other organism. The organism hunting is called the predator, while the organism being hunted is called the prey.
Parasitism: Parasitism is a relationship in which one organism (the parasite) benefits while the other(the host) is harmed. This is a positive, negative relationship.
Mutualism: Mutualism is when organisms benefit from each other. This is a positive relationship.
Commensalism: Commensalism is a relationship in which one organism benefits from another organism that is not affected. This is a positive, neutral relationship.
Amensalism: Amensalism is any relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected.

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