✅ ANSWER KEY
Part A: Respiratory System (1–10)
1. C – Exchange gases
2. B – Oxygen
3. B – Lungs
4. B – Trachea
5. C – Alveoli
6. B – Rib cage
7. C – Diaphragm
8. D – Inhalation
9. B – Your body lacks oxygen
10. C – Causing cancer and disease
Part B: Circulatory System (11–20)
11. B – Pumping blood
12. D – Heart
13. B – Arteries
14. C – Veins
15. B – Hemoglobin
16. C – Plasma
17. B – White blood cells
18. C – Form blood clots
19. B – 4
20. C – Body cells lack nutrients and oxygen
Part C: Health and Wellness (21–30)
21. B – Exercise regularly
22. C – Eat balanced meals
23. B – Vegetables and fruits
24. C – It strengthens your heart and lungs
25. C – All food groups in correct amounts
26. C – 7–9 hours
27. B – It can harm your heart and mind
28. C – Jogging or cycling
29. B – To detect problems early
30. A – Smoking