Question

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

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

Answer 1

The correct option is A Parasitism

Parasitism is a relationship between two living organisms of different species in which one organism, i.e. parasite obtains its food directly from the host. .In this relationship the parasite is benefitted (+) and the host is harmed (-). So, this type of population interaction is represented by '+' '-'.

So, the correct answer is 'A'.