Question

Organisms that gain energy by consuming preexisting organic molecules are called

Answer 1

Such organisms are called: Autotrophs. They obtain energy and nutrients by harnessing sunlight through photosynthesis (photoautotrophs) or, more rarely, obtain chemical energy through oxidation (chemoautotrophs) to make organic substances from inorganic ones. Autotrophs do not consume other organisms; they are, however, consumed by heterotrophs.

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Answer 2

Answer:

Organisms that ‘gain energy’ by consuming pre-existing ‘organic molecules’ are called autotrophs.

Explanation:

The ‘autotrophs’ are organisms that depend upon organic molecules to synthesize their own food, for example the plant used the carbon dioxide in the presence of ‘sunlight’ to produce food in the process called photosynthesis whereas the organisms that feed on other living organisms are called heterotrophs, the organisms that feed on chemicals such as ammonia to make their food are termed as chemo autotrophs.