Home
Class 12
BIOLOGY
Assertion: Temperature and soil moisture...

Assertion: Temperature and soil moisture are the important climatic factors that regulate the process of decomposition.
Reason: Warm and moist environment favours decomposition whereas low temperature and anaerobiosis inhibit decomposition.

A

a) Both assertion and reason are correct and reason is the correct explanation for assertion.

B

b) Both assertion and reason are correct and reason is not the correct explanation for assertion.

C

c) Assertion is correct and reason is incorrect

D

d) Both assertion and reason are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B

Decomposition is largely an oxygen-requiring process. The rate of decomposition is controlled by chemical composition of detritus and climatic factors. Temperature and soil moisture are the most important climatic factors that regulate decomposition through their effects on the activities of soil microbes. Warm and moist environment favour decomposition whereas low temperature and anaerobiosis (due to excessive moisture) inhibit decomposition resulting in build up of organic materials.
Promotional Banner

Similar Questions

Explore conceptually related problems

The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen, pH of the soil substratum, temperature, etc. Discuss,

Assertion: The process of nitrification involves the decomposition of proteins of dead plants and animals, and nitrogenous wastes like urea. Uric acid. Etc. of animals to ammonia. Reason: Nitrogen cycle is a sedimentary cycle.

Given below is a table of factors affecting microbial decomposition ('+' means 'favoring' and'-' means inhibiting or lowering). Select the correct option. A) {:("High temperature","Lack of oxygen","Moist enviorment","Lignin and chitin in destribus"),(+,+,+,-):} B) {:("High temperature","Lack of oxygen","Moist enviorment","Lignin and chitin in destribus"),(+,-,+,-):} C) {:("High temperature","Lack of oxygen","Moist enviorment","Lignin and chitin in destribus"),(-,-,+,-):} D) {:("High temperature","Lack of oxygen","Moist enviorment","Lignin and chitin in destribus"),(-,+,+,-):}