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Which ecological interaction is most harmful to the host organism?

Which ecological interaction is most harmful to the host organism?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Parasitism
  • B Cooperation
  • C Commensalism
  • D Mutualism
Correct Answer: Option A
Explanation:
In parasitism, the parasite benefits at the expense of the host. The host may suffer disease, weakness, tissue damage, or nutrient loss.

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