Question

Observe the above diagram and answer the following questions.
Can both animals and plants obtain their nitrogen from the atmosphere?

• A. Yes, both animals and plants take in nitrogen during respiration.
• B. Yes, most of the nitrogen in the cycle is in the atmosphere.
• C. No, only plants can take in nitrogen from the atmosphere.
• D. No, they must consume it through eating or uptake from the soil.
• E. No, they must obtain it through symbiotic relationships.

Answer 1

The correct option is D No, they must consume it through eating or uptake from the soil.

Plants take up nitrogen from the soil or obtain it through nitrogen-fixing bacteria in their roots, and animals obtain nitrogen by eating plants.

The nitrogen fixation is the biochemical process by which atmospheric nitrogen is converted into a usable form and absorbed by the plants. Plants are consumed by animal and animal gets nitrogen in the form of protein from plants only.

Thus, the correct answer is option D.