Question

How do animals get their nitrogen?

• A. By absorbing nitrogen gas through the skin
• B. By eating carbohydrates like sugars and strach
• C. From nitrates in their drinking water
• D. By eating plants and other animals.

Answer 1

The correct option is D By eating plants and other animals.

• Atmospheric nitrogen is fixed by nitrogen-fixing bacteria and makes available to the plants. Animal (herbivore) feed on plants absorbs nitrogen in the form of protein.
• When carnivores feed on other animals (herbivores) get their nitrogen.
  Hence, the correct answer is option D.