Question

All life on earth derive its energy directly or indirectly from sun except

• A. Mushroom and mould
• B. Chemosynthetic bacteria
• C. Symbiotic bacteria
• D. Pathogenic bacteria

Answer 1

The correct option is B Chemosynthetic bacteria

The organisms on the earth which can prepare their own food are known as autotrophs and the organisms which depend on the autotrophs for the food are known as heterotrophs. All the organisms on the earth depend on the energy from the sun directly as plants and indirectly as other organisms. The chemosynthetic organisms can make use of the chemical compounds as the source of energy and do not depend on the sun.

Thus, the correct answer is option B.