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Human Body & Health

Grade 1 · Stretch challenge · 8 questions · Version PG-DKKY1W-1O66

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1.What is the immune system's job?
2.What do kidneys remove from blood?
3.What do muscles do?
4.Which system sends messages through nerves?
5.Where does digestion begin?
6.Why is a balanced diet useful?
7.Which cells carry oxygen?
8.Why do people need sleep?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 5
  1. What is the immune system's job?Defend against harmful pathogens
  2. What do kidneys remove from blood?Wastes and extra water
  3. What do muscles do?They contract to move body parts
  4. Which system sends messages through nerves?The nervous system
  5. Where does digestion begin?In the mouth
  6. Why is a balanced diet useful?It supplies varied nutrients
  7. Which cells carry oxygen?Red blood cells
  8. Why do people need sleep?To help the body and brain recover

Worked example

Connect a structure to its function and explain how body systems work together.

Common mistake

Naming an organ without explaining its system role.

Helpful hint

Trace what enters, changes, and leaves the system.