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Question

One species is harmed whereas the other is unaffected. Such type of interaction is called

A
Commensalism
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B
Amensalism
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C
Parasitism
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D
Predation
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Solution

The correct option is C Amensalism
Amensalism is a type of biological interaction. It is an association between two organisms if different species where one is adversely affected and the other stays unaffected.
Examples:
1. Penicillium secretes penicillin which kills bacteria
2. Streptomyces an actinomycetes inhibit the growth of bacteria. This is extracted and used as an antibiotic
3. Roots of black walnut secrete Juglone which is toxic to other plants like apple and alfalfa
4. Convolvulus arvensis inhibits the growth of wheat

So, the correct answer is 'Amensalism'.

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