Which one of the following is most appropriately defined?

Which one of the following is most appropriately defined?
  1. Host is an organism, which provides food to another organism
  2. Amensalism is a relationship in which one species is benefited whereas the other is unaffected
  3. Predator is an organism that catches and kills other organism for food
  4. Parasite is an organism, which always lives inside the body of other organism and may kill it

Solution

Predator is an organism which catches and kills another organism (prey) for obtaining food. The term host' is also used for an organism which provides food to another organism but it is not a general term. Since, it is specific to parasitic interrelationship only.

Asked in: NEET 2010 (Mains)

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