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Question 3
Which of the following statements is/are correct?
(i)  All green plants can prepare their own food.
(ii) Most animals are autotrophs.
(iii) Carbon dioxide is not required for photosynthesis.
(iv) Oxygen is liberated during photosynthesis.

Choose the correct answer from the options below:

(a) (i) and (iv)
(b) (ii) only
(c) (ii) and (iii)
(d)(i) and (ii)


Solution

The answer is option (a).

(i)  All green plants can prepare their own food – Correct
(ii)  Most animals are autotrophs – Incorrect
Because animals are heterotrophs as they are directly or indirectly dependent on plants for food.
(iii)  Carbon dioxide is not required for photosynthesis – Incorrect
Because CO2 is essential for photosynthesis.
(iv)  Oxygen is liberated during photosynthesis – Correct

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