According to the heterotroph hypothesis, some early heterotrophs evolved into autotrophs because of their ability to synthesize organic compounds from water and

carbon dioxide

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hydrochloric acid

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oxygen

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hydrogen

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Solution

The correct option is A carbon dioxide
Option : (a)

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Question 3
Select the correct statement.

(a) Heterotrophs do not synthesise their own food.
(b) Heterotrophs utilise solar energy for photosynthesis.
(c) Heterotrophs synthesise their own food.
(d) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates.

Q. Zinc metal is added to dilute hydrochloric acid. The gas evolved is :
(a) Oxygen
(b) Hydrogen
(c) Chlorine
(d) Carbon dioxide

Q. In which respect, the heterotroph hypothesis differs from the early ideas of spontaneous generation?

Organisms having heterotrophic nutrition lack
(a) Sugar.
(b) Chlorophyll
(c) Carbon dioxide.
(d) Oxygen.

Q. According to heterotroph hypothesis, the source of food for the earliest form of life consisted of

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According to the heterotroph hypothesis, some early heterotrophs evolved into autotrophs because of their ability to synthesize organic compounds from water and

The correct option is A carbon dioxide Option : (a)

The correct option is A carbon dioxide
Option : (a)