Question

In an ecosystem, which process do autotrophs like green plants, algae, and certain bacteria use to synthesize organic food?

• A. Chemosynthesis or Photosynthesis
• B. Respiration
• C. Decomposition
• D. Fermentation

Answer 1

Answer:

A. Chemosynthesis or Photosynthesis

• In an ecosystem, autotrophs, which include green plants, algae and certain bacteria, synthesize organic food by the process of photosynthesis or chemosynthesis.

• In the process of photosynthesis, plants take Carbon dioxide from atmosphere water from environment and radiant energy from the sun and produce food in the form of carbohydrate.

• The accumulation of organic matter by plants is called Primary production

• Heterotroph organisms feed on autotrophs and accumulate biomass in their body, that is termed as - Secondary production