A) negative relationship
B) positive relationship
C) non- effective relationship
D) harmful relationship
Correct Answer: B
Solution :
Mutualism is a positive interaction, where both the species are benefitted. In such type of association, there occurs a close and often parmanent and obligatory contact more or less essential for survival of each. Negative relationship includes relations, in which one or both the species are harmed in any way during their life period. They are generally of the types such as exploitation, antibiosis and competition.
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