Q. A form of relationship in which an organism obtained food by killing his host is called :

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Solution:

Predation is the form of relationship in which an organism (predator) obtained food by killing his host (prey). In predation gainer is larger than looser. The insectivorous plants e.g., Drosera, Utricularia, Dionaea, Nepenthes, etc., are good examples of predation. In parasitism the parasites obtain their food from host without killing them.