Question

The rotting dead matter in the soil is called as
A. Decomposition
B. Humus
C. Petrification
D. Minerals

Answer 1

Hint: Dead and decaying matter are known as decomposers. They are usually found in soil in millions in number. As they rapidly grow, their number is more than any other microorganisms. They feed on dead matter and decompose it, so that it can mix up in soil. And they act as a chemical who degrades the dead faster. As these bacteria produce energy in the form of ATP which helps in degrading.

Complete answer:
Option (A) Decomposition: The process of decomposers decomposing the dead matter is called decomposition.
So, Option (A) is not the correct answer.
Option (B) Humus: Humus is the black-brownish material or soil which is created by degrading the matter by bacteria and fungi collectively called as decomposers.
So, Option (B) is the correct answer.
Option (C) Petrification: The process of solidifying or storifying the substance probably matters which needs to be solidified.
Option (C) is not the correct answer.
Option (D) Minerals- minerals are found in the earth crust and in the human body. They are nowhere related to humus.
So, Option (D) is not the correct answer.

Therefore, Option (B) is the only correct option.

Note:
Decomposers are nothing but bacteria and fungi. fungi are commonly the yeast used products growing in warm, mushy places or regions. The kind of fungi that are being used as a source of food are mushrooms. Lichens are the association of algae and fungi. The kingdom Monera is made up entirely of bacteria. They are the most abundant microorganisms. Bacteria occur almost everywhere. It is the most easily found organism on earth.