How do animals get their nitrogen?

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

Nitrogen is an essential element for all living organisms, including animals. They primarily obtain nitrogen through their diet.

Sources of Nitrogen for Animals

Animals acquire nitrogen mainly by consuming other organisms. Here are the key ways they do this:

• Eating Plants: Herbivores get nitrogen by consuming plant materials, which contain proteins and nucleic acids.
• Consuming Other Animals: Carnivores obtain nitrogen by eating other animals, which also contain proteins rich in nitrogen.

Why Nitrogen is Important

Nitrogen is crucial for building proteins and nucleic acids, which are vital for growth and cellular functions. Without sufficient nitrogen, animals would struggle to maintain their health and develop properly.

Correct Answer

The correct answer to the question is D. By eating plants and other animals. This method allows animals to incorporate nitrogen into their bodies effectively.