Standard Science Primary 4 Systems

What is the main function of the large intestine?

A To absorb water from the undigested food.
B To produce saliva to soften food.
C To break down food into simpler substances.
D To absorb nutrients into the blood.
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Worked Solution

Step 1: Recall the final stages of digestion. Step 2: Undigested food moves into the large intestine. Step 3: Its primary role is to absorb water, turning waste into solid faeces.

Correct answer: To absorb water from the undigested food.

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