Question Paper
Class / Subject: Class 9 (ICSE) · Biology
Chapter: Chapter 13 — Chapter 13: Skin - The Jack of All Trades
Time Allowed: 32 minutes
Max Marks: 16
1. What is the body's largest organ? [1]
(A) The skin
(B) The heart
(C) The liver
(D) The brain
2. What does skin protect against? [1]
(A) Pathogens and UV radiation
(B) Nothing
(C) Only cold weather
(D) Only heat
3. How does skin help regulate temperature? [1]
(A) Through sweating and blood flow adjustment
(B) Only through sweating
(C) Only through blood flow
(D) It cannot regulate temperature
4. What does skin contain for sensation? [1]
(A) Sensory receptors
(B) Only blood vessels
(C) Only sweat glands
(D) Nothing for sensation
5. What sensations do skin receptors detect? [1]
(A) Touch, pressure, temperature, pain
(B) Only touch
(C) Only pain
(D) Only temperature
6. What does skin synthesise from sunlight? [1]
(A) Vitamin D
(B) Vitamin C
(C) Vitamin A
(D) Vitamin B
7. What is vitamin D essential for? [1]
(A) Bone health
(B) Only skin colour
(C) Only hair growth
(D) Nothing important
8. Why is skin called the 'jack of all trades'? [1]
(A) It performs many important functions
(B) It has no important functions
(C) Only one function matters
(D) It's not important
9. What is the body's largest organ? [1]
(A) The skin
(B) The heart
(C) The liver
(D) The brain
10. What does skin protect against? [1]
(A) Pathogens and UV radiation
(B) Nothing
(C) Only cold weather
(D) Only heat
11. How does skin help regulate temperature? [1]
(A) Through sweating and blood flow adjustment
(B) Only through sweating
(C) Only through blood flow
(D) It cannot regulate temperature
12. What does skin contain for sensation? [1]
(A) Sensory receptors
(B) Only blood vessels
(C) Only sweat glands
(D) Nothing for sensation
13. What sensations do skin receptors detect? [1]
(A) Touch, pressure, temperature, pain
(B) Only touch
(C) Only pain
(D) Only temperature
14. What does skin synthesise from sunlight? [1]
(A) Vitamin D
(B) Vitamin C
(C) Vitamin A
(D) Vitamin B
15. What is vitamin D essential for? [1]
(A) Bone health
(B) Only skin colour
(C) Only hair growth
(D) Nothing important
16. Why is skin called the 'jack of all trades'? [1]
(A) It performs many important functions
(B) It has no important functions
(C) Only one function matters
(D) It's not important