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Human Body & Health

Grade 2 · On-level practice · 8 questions · Version PG-638A9T-1SLX

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1.Which cells carry oxygen?
2.Which system sends messages through nerves?
3.What do kidneys remove from blood?
4.What do muscles do?
5.Where does digestion begin?
6.How do vaccines help?
7.Why is a balanced diet useful?
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 3
  1. Which cells carry oxygen?Red blood cells
  2. Which system sends messages through nerves?The nervous system
  3. What do kidneys remove from blood?Wastes and extra water
  4. What do muscles do?They contract to move body parts
  5. Where does digestion begin?In the mouth
  6. How do vaccines help?They prepare immunity to recognize a pathogen
  7. Why is a balanced diet useful?It supplies varied nutrients
  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.