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Human Body & Health

Grade 1 · On-level practice · 8 questions · Version PG-1T0V3OZ-1I9W

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1.Which cells carry oxygen?
2.Where does digestion begin?
3.Which system sends messages through nerves?
4.Which sense organ detects light?
5.What do muscles do?
6.Which body part pumps blood?
7.Name one job of the skeleton.
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 15
  1. Which cells carry oxygen?Red blood cells
  2. Where does digestion begin?In the mouth
  3. Which system sends messages through nerves?The nervous system
  4. Which sense organ detects light?The eyes
  5. What do muscles do?They contract to move body parts
  6. Which body part pumps blood?The heart
  7. Name one job of the skeleton.Support and protect the body
  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.