Q. The highly degraded organic matter rich in nitrogen and potassium in particular resulting from the activity of earthworms, is called
A) Worm castings
B) Vermicompost
C) Compost bedding
D) Humus
Explanation
Vermicompost is highly degraded organic matter rich in $N_{2}\ and\ K$ resulting from activity of earthworm. Humus is the decomposed plant material of the soil. A horizon contains high amount of humus.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.