Q. If '+' sign is assigned to beneficial interactions, '-' sign to detrimental and '0' sign to neutral interactions, then the population interaction represented by '+' '-' refers to
A) Mutualism
B) Amensalism
C) Commensalism
D) Parasitism
Explanation
[Solution] Parasitism (and predation) is (+, -). Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.