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What is true for photolithotrophs?

1. Obtain energy from radiations and hydrogen from organic compounds
2. Obtain energy from radiations and hydrogen from inorganic compounds
3. Obtain energy from organic compounds
4. Obtain energy from inorganic compounds

Correct answer: Obtain energy from radiations and hydrogen from inorganic compounds

Solution

Photolithotrophs use light (radiation) for energy and obtain reducing power, such as hydrogen/electrons, from inorganic compounds. That matches the definition of a photo- litho- troph.

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