Home PYQs UPPSC UPPSC MCQs Prelims 2000 (GS Paper I)

Question

Assertion (A): Some bacteria can synthesise their own food.
Reason (R): These bacteria have green matter called chloroplasts.

Codes:

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true but R is not the correct explanation of A
  3. A is true but R is false
  4. A is false but R is true

Answer:

Option C: A is true but R is false

Detailed Solution:

The correct answer is “A is true but R is false”.

The correct answer is: (3) A is true but R is false

While some bacteria can synthesize their own food, they don't use chloroplasts. They employ different mechanisms for food production, such as chemosynthesis (using chemical energy) or photosynthesis using pigments other than chlorophyll.