Standard Science Primary 5 Systems

What is the main function of the human circulatory system?

A To break down food into simpler substances
B To transport oxygen, water, and nutrients to all parts of the body
C To provide support and protection for the body
D To take in oxygen and remove carbon dioxide from the body
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Worked Solution

Step 1: Identify system components (heart, blood, blood vessels). Step 2: Match with function: distribution/transportation of essential materials to cells.

Correct answer: To transport oxygen, water, and nutrients to all parts of the body

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