NEETZoologyMicrobes in Human Welfare
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Aspergillus niger is widely used for the commercial production of citric acid. Reason (R): Aspergillus niger is a species of bacterium that naturally secretes large amounts of organic acids. In the light of the above statements, choose the correct answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
C. (A) is true but (R) is false
Step-by-step solution
Assertion (A) is a true statement. Aspergillus niger is indeed the microbe used for the commercial and industrial production of citric acid. Reason (R) is a false statement. According to NCERT, Aspergillus niger is a fungus, not a bacterium. While other acid-producing microbes like Acetobacter aceti, Clostridium butylicum, and Lactobacillus are bacteria, Aspergillus niger belongs to the kingdom Fungi. Answer: (A) is true but (R) is false