13. The Correct Statements with reference to single called organisms are

The options from the question - 13. The Correct Statements with reference to single called organisms are

(i) Complex substances are not broken down in to simpler substances.
(ii) Simple diffusion is sufficient to meet the requirement of exchange of gases.
(iii) Specialized tissues perform different functions in the organism.
(iv) Entire surface of the organism is in contact with the environment for taking in food.

• A. (i) and (iii)
• B. (ii) and (iii)
• C. (ii) and (iv)
• D. (i) and (iv)

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