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Distinguish between autotropic and heterotrophic nutrition by writing a brief sentence on each - Leaving Cert Biology - Question 17 (d) - 2022

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Question 17 (d)

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Distinguish between autotropic and heterotrophic nutrition by writing a brief sentence on each. Chemical digestion and mechanical digestion are part of nutrition. B... show full transcript

Worked Solution & Example Answer:Distinguish between autotropic and heterotrophic nutrition by writing a brief sentence on each - Leaving Cert Biology - Question 17 (d) - 2022

Step 1

Distinguish between autotropic and heterotrophic nutrition

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Answer

Autotropic organisms make their own food. In contrast, heterotrophic organisms obtain food from other organisms.

Step 2

Describe how both types of digestion take place in the mouth

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Answer

Chemical digestion occurs in the mouth through the action of enzymes that break down food, while mechanical digestion involves the chewing action of the teeth and the movement of the tongue to mix food.

Step 3

Name one other location in the human digestive system where both types of digestion take place

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Answer

Both types of digestion also occur in the stomach.

Step 4

What is the name given to the muscular contractions which force food along the alimentary canal?

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Answer

The name given to these contractions is peristalsis.

Step 5

Write them in the correct order, starting with the mouth

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Answer

Mouth → Oesophagus → Stomach → Small intestine → Large intestine → Rectum.

Step 6

What is meant by the term egestion?

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Answer

Egestion is the process of getting rid of undigested food from the body.

Step 7

Give two functions of symbiotic bacteria

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Answer

  1. Symbiotic bacteria help in the digestion of food.
  2. They also help prevent harmful microorganisms from growing.

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