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Adaptations for Nutrition

Herbivores, carnivores and parasites

  • 3 things to know
  • Component 3

Overview

Four chambers of a ruminant stomach, dentition of a herbivore and dentition of a carnivore.

What you need to know

Answer each one before you reveal it.

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Key term

Name four adaptations of a tapeworm to its way of life.

Key term

Name the four chambers of a ruminant stomach.

Key term

Which of the four chambers of a ruminant stomach is the true stomach?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What problem does a diet of grass present?

    Model answer

    Its energy is largely locked in cellulose, and no mammal produces an enzyme that can digest cellulose.

  2. 2

    How does a ruminant solve that problem?

    Model answer

    It houses cellulose-digesting bacteria in an enlarged chamber of its gut, and absorbs the products of their fermentation.

  3. 3

    Name the four chambers of a ruminant stomach.

    Model answer

    The rumen, the reticulum, the omasum and the abomasum.

  4. 4

    Which of the four is the true stomach?

    Model answer

    The abomasum, which secretes acid and enzymes as a simple stomach does.

  5. 5

    What is rumination?

    Model answer

    The return of partly digested food to the mouth to be chewed again, which reduces the particle size and exposes more cellulose to the bacteria.

  6. 6

    Describe the dentition of a herbivore.

    Model answer

    Sharp incisors and a horny pad for cutting vegetation, a diastema separating the front from the back teeth, and broad ridged molars for grinding, with a jaw that moves sideways.

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