Question
Biology Question on organisms and populations
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
mutualism
B
amensalism
C
commensalism
D
parasitism
Answer
parasitism
Explanation
Solution
Parasitism ⇒ Parasite is benefitted (+) but host is harmed (-) so it is a (+, -) type of population interaction.