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STD 12 - 11. organisms and populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 11. organisms and populations1 Mark
MCQ
Competition for light, nutrients and space is most severe between
  • A
    Closely related plants growing in different area
  • ✓
    Closely related plants growing in same area
  • C
    Distantly related plants growing in different habitat
  • D
    Distantly related plants growing in same habitat
✓

Answer

Correct option: B.
Closely related plants growing in same area
b
Competition for light, nutrients and space is more severe when closely related or intraspecific plants grow in same area.

Gause's hypothesis (Principle of Competitive Exclusion) Gause $(1934)$ found that out of two species of Paramecium grown together one is eliminated. This phenomenon is called Gause's hypothesis or principle of competitive exclusion. This principle operates when the resources are limited and two species competetes for same resources

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