Question 12. The soil matter formed by decayed organic matter is called (a) pesticide (b) fertiliser (c) humus (d) biocide Answer
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. This material is called leaf litter.
Pesticides are the chemicals used to kill or prevent these pests. These chemicals are sprayed on plants to reduce the damage caused due to the attack of pests.
