Distinguish between autotropic and heterotrophic nutrition by writing a brief sentence on each - Leaving Cert Biology - Question 17 (d) - 2022
Question 17 (d)
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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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
Symbiotic bacteria help in the digestion of food.
They also help prevent harmful microorganisms from growing.
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