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Assertion (A) : In unicellular organisms, the main excretion takes place by simple diffusionthrough body surface. Reason (R) : No specific excretory organs are present in unicellular organisms. A) Both A and R are true and R is the correct explanation of AB) Both A and R are true but R is not the correct explanation of AC) A is true but R is falseD) A is false but R is true |
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