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 assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
Paramecium contains two types of nuclei-one large macronucleus and one small micronucleus. Macronucleus is the somatic or vegetative nucleus and controls the day to day metabolic activities of the cell. micronucleus controls the reproductive activities of the organism. Paramecium contains two types of contractile vacuoles. One vacuole lies near each end of body, close to the dorsal surface.
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