Question

Two Mark Questions.
What is mutualism? Mention any two examples where the organisms involved are commercially exploited in agriculture.

Answer 1

Mutualism is the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other.
The two examples of the organisms involved that are commercially exploited in agriculture are as follows:
(i) In order to replenish the lost nutrients (especially nitrogen) in the soil, farmers grow leguminous crops containing Rhizobium in its roots.
(ii) Farmers use Mycorrhiza commercially in agriculture as it improves the soil quality and reduces soil erosion by improving plant rooting capacity.