Q. Which of the following is the organic matter of animal and vegetable origin in the soil?
Answer: Humus
Notes: Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. The thick brown or black substance that remains after most of the organic litter has decomposed is called humus.

This question is part of 40000+ MCQs GKToday PCS Mock Tests Series in GKToday Android app. Question Number: 33 in GKToday PCS Mock Test - 328 in above course in App.