Question

Study the table given below with respect to population interactions and select the correct option.

Species A	Species B	Interaction type
0	___i___	Amensalism
+	-	____ii__
-	___iii___	Competition
+	+	___iv___
+	0	___v____

Note: (+) = Beneficial interaction; (-) = detrimental interaction, (0) = Neutral interaction

• A. i – (+), ii – Predation, iii – (-), iv – Mutualism, v – Commensalism
• B. i – (-), ii – Parasitism, iii – (+), iv – Mutualism, v – Commensalism
• C. i – (-), ii – Predation, iii – (-), iv – Mutualism, v – Commensalism
• D. i – (-), ii – Predation, iii – (-), iv – Commensalism, v – Parasitism

Answer 1

The correct option is C i – (-), ii – Predation, iii – (-), iv – Mutualism, v – Commensalism

An ecosystem is a stable unit of the biosphere formed by the interactions between the biotic and abiotic factors that it is composed of.

When populations of two different species interact with each other, their interactions can be beneficial, harmful or neutral (with no effect at all).

There are various types of interactions between populations of different species, which are given below:

Species A	Species B	Interaction type
0	-	Amensalism
+	-	Predation
-	-	Competition
+	+	Mutualism
+	0	Commensalism

Note: (+) = Beneficial interaction; (-) = detrimental interaction, (0) = Neutral interaction.