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Human Body & Health

Grade 5 · On-level practice · 8 questions · Version PG-1HY5G4V-1Y2A

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1.Why does heart rate rise during exercise?
2.Which system sends messages through nerves?
3.Which cells carry oxygen?
4.What do kidneys remove from blood?
5.Why is a balanced diet useful?
6.How do lungs and circulation interact?
7.What maintains stable internal conditions?
8.What is the immune system's job?

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. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
  2. Which system sends messages through nerves?The nervous system
  3. Which cells carry oxygen?Red blood cells
  4. What do kidneys remove from blood?Wastes and extra water
  5. Why is a balanced diet useful?It supplies varied nutrients
  6. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  7. What maintains stable internal conditions?Homeostasis
  8. What is the immune system's job?Defend against harmful pathogens

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.