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Q.

Assertion: Bacteria have three basic shapes, i.e., round, rod, spiral.

Reason : Cocci and Bacilli may form clusters or chain of a definite length.

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a

A is false but R is true

b

Both A and R are true and R is correct explanation of A

c

A is true R is false

d

Both A and R are true but R is not correct

answer is B.

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Detailed Solution

Bacteria has three basic shapes like cocci (round), bacilli (rod) and spirilla (spiral shaped).

Cocci form clusters and chains but bacilli form only chains but not clusters.

Hence, both A & R are true, but R is not correct.

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