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Human Body & Health

Grade 2 · On-level practice · 8 questions · Version PG-NUCO59-1SLX

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

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 14
  1. Where does digestion begin?In the mouth
  2. What do muscles do?They contract to move body parts
  3. Which system sends messages through nerves?The nervous system
  4. What do kidneys remove from blood?Wastes and extra water
  5. What is the immune system's job?Defend against harmful pathogens
  6. Which cells carry oxygen?Red blood cells
  7. Why do people need sleep?To help the body and brain recover
  8. How do vaccines help?They prepare immunity to recognize a pathogen

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.