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Human Body & Health

Grade 1 · On-level practice · 8 questions · Version PG-1DATTDT-1I9W

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1.What helps you breathe?
2.What protects the brain?
3.Which system sends messages through nerves?
4.Which sense organ detects light?
5.Which body part pumps blood?
6.What do muscles do?
7.Why do people need sleep?
8.Which cells carry oxygen?

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 6
  1. What helps you breathe?The lungs
  2. What protects the brain?The skull
  3. Which system sends messages through nerves?The nervous system
  4. Which sense organ detects light?The eyes
  5. Which body part pumps blood?The heart
  6. What do muscles do?They contract to move body parts
  7. Why do people need sleep?To help the body and brain recover
  8. Which cells carry oxygen?Red blood cells

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.