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If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '–' refers to:

  1. A
    parasitism
  2. B
    mutualism
  3. C
    amensalism
  4. D
    commensalism

Solution & Step-by-step Explanation

- Parasitism (+, -): One is benefited, the other is harmed.Mutualism (+, +): Both are benefited.Commensalism (+, 0): One is benefited, the other is unaffected.Amensalism (-, 0): One is harmed, the other is unaffected.Note: Predation is also (+, -), but among the given options, parasitism fits.

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If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '–' refers to:
A
parasitism
B
mutualism
C
amensalism
D
commensalism

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EcologyPopulation Interactions

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