Question

Chemosynthesis and photosynthesis are alike as they both

• A. Are associated with heterotroph
• B. Require sunlight as an energy source
• C. Use method of autotrophic nutrition
• D. Occur in tracheophytes

Answer 1

Answer: (C)

Use method of autotrophic nutrition

Chemosynthesis and photosynthesis are both autotrophic mode of nutrition. In autotrophic nutrition the organisms can produce food of their own. Photosynthesis is the process of carbon fixation, which mainly takes place in two steps, light reaction and dark reaction. ATP and NADPH${}_2$ are produced in the light reaction which is utilized for carbon fixation during the dark reaction.

Chemosynthesis is the production of organic and inorganic compounds by using chemical reactions in the absence of light.

So, the correct answer is option C.