Home
Class 11
BIOLOGY
Assertion: Nitrate present in the soil i...

Assertion: Nitrate present in the soil is reduced to nitrogen by the process of denitrification
Reason: Denitrification is carried by bacteria Pseudomonas and Azotobacter.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

if both assertion and reason are true but reason is not the correct explanation of assertion

C

if assertion is true but reason is false

D

if both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C

The nitrate formed by nitrification is absorbed by plants and is transported to the leaves. In leaves, it is reduced to form ammonia that finally forms the amine group of amino acids. Nitrate present in the soil is also reduce to nitrogen by the process of denitrication. Denitrification is carried by bacteria Pseudomonas and Thiobacilus.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: Ammonia is converted into nitrate by soil bacteria like Nitrosomonas and Nitrobacter Reason: Denitrification is carried by bacteria Pseudomonas and Azotobacter.

Assertion: Reduction of nitrogen to ammonia by living organisms is called nitrification. Reason: Example of free-living nitrogen fixing anaerobic microbes are Azotobacter and Bijerinckia.

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.

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.