Question

How do autotrophs obtain CO2 and N2 to make their food?

Answer 1

We know that green plants are autotrophic that is they synthesise their own food by the process of photosynthesis. In presence of chlorophyll plants use the energy in sunlight to prepare food from carbon dioxide and water. Plants are green due to chlorophyll present in the chloroplasts of the plants cells.

Answer 2

Heya....

here is ur answer...

For the preparation of food, Autotrophs obtain CO₂ directly from the atmosphere from the stomata by the process of diffusion

But, they cannot obtain N₂ directly from the atmosphere, or rather they cannot synthesis the N₂ in the air , as they are bonded by triple bonds and hard to break. They obtain N₂ from the soil, where it has already been broken down by the nitrogen-fixing bacteria.

hope it helps...

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