Question

Assertion :Bacteria do not always move with the help of flagella Reason: Flagellated bacteria employs rotary motion of flagellum when it moves.

• A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assert!on
• C. If the assertion ts true but the reason !s false
• D. If both the assertion and reason are false

Answer 1

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assert!on

Bacteria have different ways of moving. Some bacteria moves with the help of flagella which is a tail-like structure which when moves in rotary motion gives a push to bacteria to move. On the other hand, some bacteria moves with the help of pili, which are the tiny hair-like structures on bacteria by which bacteria attaches itself to the surface, and by contracting and relaxing it, bacteria can move on the surface.

The correct answer is B.