1. Blood is a type of tissue. What kind of tissue is it?
a) Epithelial tissue
b) Connective tissue
c) Muscle tissue
d) Nervous tissue
2. Which component of blood is responsible for carrying oxygen?
a) White blood cells
b) Platelets
c) Plasma
d) Red blood corpuscles
3. The heart prevents the mixing of oxygenated and de-oxygenated blood by:
a) Having thick walls
b) Using valves
c) Having different chambers
d) Pumping blood rapidly
4. Which chamber of the heart receives oxygen-rich blood from the lungs?
a) Right atrium
b) Right ventricle
c) Left atrium
d) Left ventricle
5. The primary function of valves in the heart is to:
a) Increase blood pressure
b) Ensure one-way flow of blood
c) Mix oxygenated and de-oxygenated blood
d) Pump blood to the lungs
6. The process of blood passing through the heart twice during one cycle in vertebrates is called:
a) Single circulation
b) Double circulation
c) Systemic circulation
d) Pulmonary circulation
7. In which animals is the body temperature dependent on the environment?
a) Birds
b) Mammals
c) Reptiles
d) Humans
8. Capillaries are characterized by:
a) Thick walls
b) One-cell thick walls
c) Elastic walls
d) Valves to prevent backflow
9. What is the role of platelets in the blood?
a) Transport oxygen
b) Transport carbon dioxide
c) Clot blood at injury sites
d) Carry nutrients
10. Lymph is similar to plasma but differs in:
a) Color
b) Protein content
c) Cell type
d) All of the above
11. Assertion (A): Arteries have thick and elastic walls.
Reason (R): Arteries need to withstand high pressure of blood pumped from the heart.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
12. Assertion (A): Veins have valves.
Reason (R): Veins carry blood under high pressure.
a) Both A and R are true, and R is the correct explanation of A.
b) Both A and R are true, but R is not the correct explanation of A.
c) A is true, but R is false.
d) A is false, but R is true.
13. Match the following components with their functions:
A. Plasma
B. Red blood corpuscles
C. White blood cells
D. Platelets
1. Transport oxygen
2. Fight infections
3. Clot blood
4. Transport nutrients and waste
a) A-4, B-1, C-2, D-3
b) A-3, B-1, C-4, D-2
c) A-4, B-2, C-3, D-1
d) A-1, B-3, C-4, D-2
14. Which of the following statements about the heart is true?
a) The left atrium receives de-oxygenated blood.
b) The right ventricle pumps oxygenated blood to the body.
c) The left ventricle has thicker walls than the atria.
d) The right atrium pumps blood to the lungs.
15. The exchange of materials between blood and surrounding cells occurs in the:
a) Arteries
b) Veins
c) Capillaries
d) Heart
16. What happens when the left ventricle contracts?
a) Blood is pumped into the left atrium.
b) Blood is pumped to the lungs.
c) Blood is pumped out to the body.
d) Blood is pumped into the right ventricle.
17. The separation of oxygenated and de-oxygenated blood is beneficial for animals because:
a) It allows efficient oxygen supply.
b) It helps maintain constant body temperature.
c) It is crucial for animals with high energy needs.
d) All of the above
18. The main respiratory pigment in human beings is:
a) Chlorophyll
b) Hemoglobin
c) Myoglobin
d) Melanin
19. The primary purpose of lymph in the body is to:
a) Transport oxygen
b) Carry nutrients
c) Drain excess fluid from tissues
d) Form blood clots
20. Which of the following statements about fish circulation is correct?
a) Blood passes through the heart twice during one cycle.
b) Blood passes through the heart once during one cycle.
c) Fish have a three-chambered heart.
d) Fish have a four-chambered heart.
Answer Key
1. b) Connective tissue
2. d) Red blood corpuscles
3. c) Having different chambers
4. c) Left atrium
5. b) Ensure one-way flow of blood
6. b) Double circulation
7. c) Reptiles
8. b) One-cell thick walls
9. c) Clot blood at injury sites
10. d) All of the above
11. a) Both A and R are true, and R is the correct explanation of A.
12. c) A is true, but R is false.
13. a) A-4, B-1, C-2, D-3
14. c) The left ventricle has thicker walls than the atria.
15. c) Capillaries
16. c) Blood is pumped out to the body.
17. d) All of the above
18. b) Hemoglobin
19. c) Drain excess fluid from tissues
20. b) Blood passes through the heart once during one cycle
 CBSE ){kind=link}
0 Comments