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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

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that "nitrate present in the soil is reduced to nitrogen by the process of denitrification." This is a true statement. Denitrification is indeed the process where nitrates (NO3-) in the soil are converted back into nitrogen gas (N2), which is released into the atmosphere. 2. **Understanding the Reason**: The reason states that "denitrification is carried out by bacteria Pseudomonas and Azotobacter." While it is true that denitrification is performed by bacteria, the statement is partially incorrect. Pseudomonas is a well-known denitrifying bacterium, but Azotobacter is primarily known for nitrogen fixation, not denitrification. 3. **Evaluating the Relationship**: We need to determine if the reason correctly explains the assertion. The assertion is true, but since the reason incorrectly includes Azotobacter as a denitrifying bacterium, it does not serve as a correct explanation for the assertion. 4. **Conclusion**: Based on the evaluation, the assertion is true, but the reason is false. Therefore, the correct answer is that the assertion is true but the reason is false. ---
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that "nitrate present in the soil is reduced to nitrogen by the process of denitrification." This is a true statement. Denitrification is indeed the process where nitrates (NO3-) in the soil are converted back into nitrogen gas (N2), which is released into the atmosphere. 2. **Understanding the Reason**: The reason states that "denitrification is carried out by bacteria Pseudomonas and Azotobacter." While it is true that denitrification is performed by bacteria, the statement is partially incorrect. Pseudomonas is a well-known denitrifying bacterium, but Azotobacter is primarily known for nitrogen fixation, not denitrification. 3. **Evaluating the Relationship**: We need to determine if the reason correctly explains the assertion. The assertion is true, but since the reason incorrectly includes Azotobacter as a denitrifying bacterium, it does not serve as a correct explanation for the assertion. ...
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