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Organisms and Populations — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations1 Mark
MCQ
For question two statements are given $-$ one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c) $ and $(d)$ as given below.
Assertion : Generally the intraspecific competition is more intense than interspecific competition.
Reason : lntraspecific competition occurs when the resources are in short supply.
  • A
    Both assertion and reason are true and reason is the correct explanation of assertion.
  • ✓
    Both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    Assertion is true but reason is false.
  • D
    Both assertion and reason are false.
✓

Answer

Correct option: B.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Interaction between two species, where both suffer adverse effects, is known as competition.
Usually, competition occurs when resources, such as space, light and nutrients, etc. are in short supply.
As a result of competition, the growth and reproduction of both species is reduced. Competition is basically of two types : $(i)$ Interspecific $(ii)$ Intraspecific.
Interspecific competition occurs between individuals of two different species occurring in a habitat. On the other hand, intraspecific competition occurs between individuals of the same species.
Generally, the intraspecific competition is more intense than interspecific competition because of the very similar requirements of the individuals of the same species which led them to compete more fiercely.

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