Question

If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

• A. Commensalism
• B. Parasitism
• C. Mutualism
• D. Amensalism

Answer 1

The correct option is B Parasitism

Commensalism refers to relationship wherein one organism is benefitted while other remains unaffected and is denoted by + 0.

Amensalism refers to association wherein one partner is inhibited while other remains nearly unaffected and is denoted by - 0.

Association of organisms which benefits one of the partners at the expense of other is called as parasitism and is denoted by + -.

Mutualism is association of organisms wherein both are benefitted and is denoted by + +.

Therefore, the correct answer is option B.