Question

Which of the following groups of organisms have an ability to synthesise organic food from inorganic raw materials and also carry photolysis of water?

Chemoautotrophs

Chemoheterotrophs

Photoautotrophs; anoxygenic

Photoautotrophs; oxygenic​

Answer 1

Answer:

The required answer is an option (a) Chemoautotrophs

Explanation:

Chemoautotrophs are capable of fixing carbon dioxide to produce their own organic compounds. These species have the capacity to generate their own food or energy. The oxidation of inorganic substances like iron, sulphur, or magnesium provides the energy needed for this process. Due to their independence from external carbon sources other than carbon dioxide, chemoautotrophs can survive in extremely severe conditions like deep marine vents. Chemoautotrophs include bacteria that fix nitrogen in the soil, bacteria that oxidize iron in lava beds, and bacteria that oxidize sulphur in deep-sea thermal vents.

Therefore, the option (a) Chemoautrophs is correct.

#SPJ3