Organisms and Populations · Class 12 · CBSE · Science Biology
Which of the following interactions is correctly matched with its specific ecological effect on the two interacting species, where '+' represents ben…
Practice question from Organisms and Populations (Class 12 · CBSE · Science Biology), with the correct answer and a step-by-step solution.
medium · MCQ · Q-4049FE
Which of the following interactions is correctly matched with its specific ecological effect on the two interacting species, where '+' represents benefit, '-' represents harm, and '0' represents neutral?
- A.Mutualism: (+, +) where both species lose energy without gaining fitness
- B.Competition: (-, -) where fitness of one species is significantly reduced in the presence of the otherCorrect answer
- C.Predation: (+, -) where the predator is adversely affected by the defense mechanisms of the prey
- D.Commensalism: (+, 0) where the host species derives considerable nutritional benefit from the commensal
Solution
Competition is a (-, -) interaction where fitness of one species is lowered in the presence of another due to the scarcity of shared resources. Mutualism is (+, +) with fitness benefits to both. Predation is (+, _) where the predator benefits and prey is harmed. Commensalism is (+, 0) where the commensal benefits and the host is unaffected.
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