Life Processes Class 10 MCQ Set 6 | Transportation in Animals | NCERT JKBOSE CBSE

 

Topic Coverage: Human circulatory system (heart, blood vessels, blood pressure, blood components), pulmonary and systemic circulation, lymphatic system, and transport of gases.

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📌 Quiz: Biology 10th

📚 Subject: Biology

🏫 Class: Class 10

📖 Chapter: Life Process Set F

📝 Questions: 50

📘 Biology 10th

Biology | Life Process Set F

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Q1. What is the main function of the circulatory system in human beings?

A. To digest food and absorb nutrients

B. To transport oxygen, carbon dioxide, nutrients, hormones, and waste products throughout the body

C. To produce antibodies and fight infection

D. To filter blood and produce urine

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Q2. Why is the human heart called "our pump"?

A. Because it filters waste from blood

B. Because it continuously contracts and relaxes to push blood through blood vessels, just like a mechanical pump moves liquid

C. Because it produces new blood cells

D. Because it stores blood for emergency use

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Q3. How many chambers does the human heart have?

A. Two chambers

B. Three chambers

C. Four chambers

D. Five chambers

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Q4. Which chamber of the human heart has the thickest muscular wall and why?

A. Right atrium because it receives blood from the body

B. Left atrium because it receives blood from the lungs

C. Right ventricle because it pumps blood to the lungs

D. Left ventricle because it has to pump blood to the entire body against high resistance

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Q5. What is the function of valves in the human heart?

A. To produce blood cells

B. To prevent the backward flow of blood, ensuring one-way circulation

C. To increase the speed of blood flow

D. To filter out impurities from blood

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Q6. Which blood vessel carries deoxygenated blood from the heart to the lungs?

A. Pulmonary vein

B. Aorta

C. Pulmonary artery

D. Vena cava

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Q7. Which blood vessel carries oxygenated blood from the lungs to the heart?

A. Pulmonary artery

B. Pulmonary vein

C. Superior vena cava

D. Aorta

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Q8. What happens to carbon dioxide in the lungs during gas exchange?

A. Carbon dioxide from the inhaled air diffuses into the blood

B. Carbon dioxide from the blood diffuses into the alveoli of the lungs to be exhaled

C. Carbon dioxide is converted into oxygen in the lungs

D. Carbon dioxide is stored in the lungs permanently

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Q9. At the tissue level, what happens to oxygen during gas exchange?

A. Oxygen from the blood diffuses into the tissue cells, where it is used for aerobic respiration

B. Oxygen from the tissue cells diffuses into the blood

C. Oxygen is converted into carbon dioxide in the tissues

D. Oxygen binds to carbon dioxide for transport

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Q10. At the tissue level, what happens to carbon dioxide during gas exchange?

A. Carbon dioxide from the blood diffuses into the tissue cells

B. Carbon dioxide produced by tissue cells diffuses into the blood

C. Carbon dioxide is not exchanged at the tissue level

D. Carbon dioxide is converted into oxygen in the tissues

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Q11. What is blood pressure?

A. The force exerted by blood against the walls of blood vessels, generated by the pumping of the heart

B. The number of times the heart beats per minute

C. The volume of blood pumped by the heart per minute

D. The pressure of oxygen in the blood

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Q12. What are the two numbers recorded when measuring blood pressure?

A. Atrial pressure and ventricular pressure

B. Systolic pressure and diastolic pressure

C. Pulmonary pressure and aortic pressure

D. Maximum pressure and minimum pressure in veins

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Q13. What is the normal blood pressure range for a healthy adult human?

A. 80/120 mm Hg

B. 120/80 mm Hg

C. 140/90 mm Hg

D. 100/60 mm Hg

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Q14. What are the three main types of blood vessels in the human body?

A. Arteries, veins, and capillaries

B. Atria, ventricles, and valves

C. Pulmonary, systemic, and coronary

D. Red blood vessels, white blood vessels, and platelets

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Q15. Why do arteries have thick, elastic walls?

A. To allow easy exchange of gases

B. Because blood flows at high pressure directly from the heart's pumping action

C. To prevent blood from flowing backward

D. Because they carry only deoxygenated blood

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Q16. Why do veins have valves, while arteries do not?

A. Veins carry blood at low pressure, and valves prevent the backflow of blood against gravity, especially in the limbs

B. Arteries need valves to prevent backflow from the heart

C. Veins have valves to increase blood pressure

D. Valves in veins produce red blood cells

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Q17. What is the function of capillaries in the transportation system?

A. To carry blood at high speed to all organs

B. To serve as the site of exchange of oxygen, carbon dioxide, nutrients, and waste products between blood and body cells

C. To store extra blood when not needed

D. To produce white blood cells

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Q18. What is the role of platelets in the transportation system?

A. To carry oxygen to tissues

B. To fight against infections

C. To help in blood clotting at the site of an injury, preventing excessive blood loss

D. To transport hormones

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Q19. What happens if platelets are deficient in the blood?

A. The blood will not clot properly, leading to excessive bleeding even from minor injuries

B. The person will have high blood pressure

C. The blood will become too thick to flow

D. The person will get infections easily

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Q20. What is lymph?

A. Red blood cells suspended in plasma

B. A colorless fluid derived from interstitial fluid that drains into lymphatic vessels

C. The fluid inside arteries

D. A digestive juice secreted by the pancreas

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Q21. What is the main function of the lymphatic system?

A. To transport oxygen to the brain

B. To collect excess interstitial fluid from tissues and return it to the bloodstream, and to transport fats and immune cells

C. To produce red blood cells

D. To filter carbon dioxide from the blood

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Q22. How does lymph move through the lymphatic vessels, since there is no heart-like pump for lymph?

A. Lymph moves by gravity alone

B. Lymph is pushed by the contraction of skeletal muscles surrounding the lymphatic vessels and by breathing movements; one-way valves prevent backflow

C. Lymph moves by the pumping action of the lymph nodes

D. Lymph does not move; it stays in the tissues

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Q23. What is the difference between blood and lymph?

A. Blood contains red blood cells, platelets, and more proteins; lymph contains fewer proteins and no red blood cells, but more lymphocytes

B. Blood is colorless, and lymph is red

C. Blood flows only in arteries, lymph flows only in veins

D. There is no difference; they are the same fluid

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Q24. What is the role of hemoglobin in the transport system?

A. Hemoglobin is a pigment in platelets that helps in clotting

B. Hemoglobin is an iron-containing protein in red blood cells that reversibly binds with oxygen, increasing the oxygen-carrying capacity of blood

C. Hemoglobin dissolves carbon dioxide in plasma

D. Hemoglobin pumps blood through the heart

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Q25. What is the difference between pulmonary circulation and systemic circulation?

A. Pulmonary circulation carries blood to the lungs for gas exchange; systemic circulation carries blood to the rest of the body

B. Pulmonary circulation carries oxygenated blood; systemic circulation carries deoxygenated blood

C. Pulmonary circulation uses veins only; systemic circulation uses arteries only

D. There is no difference

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Q26. What is the function of the sinoatrial node in the heart?

A. It filters blood entering the heart

B. It is the natural pacemaker that initiates the heartbeat by generating electrical impulses

C. It prevents the mixing of oxygenated and deoxygenated blood

D. It stores blood between heartbeats

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Q27. Why is the separation of oxygenated and deoxygenated blood important in humans?

A. To make the heart look red and blue

B. To maintain high efficiency of oxygen delivery to tissues, ensuring that cells receive fully oxygenated blood for maximum energy production

C. To reduce the workload on the lungs

D. To produce more carbon dioxide

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Q28. What is the function of lymph nodes in the lymphatic system?

A. To produce red blood cells

B. To filter lymph, trapping bacteria, viruses, and other foreign particles, and to produce lymphocytes

C. To pump lymph through the body

D. To store excess fat

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Q29. What happens to the excess interstitial fluid if the lymphatic system is blocked or damaged?

A. It evaporates through the skin

B. It accumulates in the tissues, causing swelling called edema

C. It is converted into blood

D. It is stored in the liver

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Q30. Trace the correct pathway of a red blood cell carrying oxygen from the lungs to the tissues of the leg and back to the lungs.

A. Lungs → pulmonary vein → left atrium → left ventricle → aorta → leg artery → leg capillaries → leg vein → vena cava → right atrium → right ventricle → pulmonary artery → lungs

B. Lungs → pulmonary artery → left atrium → left ventricle → vena cava → leg capillaries → leg vein → aorta → right atrium → right ventricle → pulmonary vein → lungs

C. Lungs → aorta → left atrium → left ventricle → pulmonary vein → leg artery → leg capillaries → leg vein → vena cava → right atrium → right ventricle → pulmonary artery → lungs

D. Lungs → vena cava → right atrium → right ventricle → pulmonary artery → leg artery → leg capillaries → leg vein → left atrium → left ventricle → aorta → lungs

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Q31. What is the function of the atria in the heart?

A. To pump blood out of the heart

B. To receive blood entering the heart

C. To produce blood cells

D. To filter blood

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Q32. What is the function of the ventricles in the heart?

A. To receive blood entering the heart

B. To pump blood out of the heart

C. To produce blood cells

D. To filter blood

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Q33. Which artery carries deoxygenated blood?

A. Aorta

B. Pulmonary artery

C. Carotid artery

D. Femoral artery

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Q34. Which vein carries oxygenated blood?

A. Vena cava

B. Pulmonary vein

C. Jugular vein

D. Femoral vein

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Q35. What is the function of the coronary arteries?

A. To supply blood to the lungs

B. To supply blood to the heart muscle itself

C. To supply blood to the brain

D. To supply blood to the kidneys

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Q36. What is a heart attack?

A. When the heart stops beating completely

B. When the blood supply to a part of the heart muscle is blocked

C. When the heart beats too fast

D. When the heart valves stop working

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Q37. What is the function of the aorta?

A. To carry deoxygenated blood from the heart to the lungs

B. To carry oxygenated blood from the heart to the rest of the body

C. To carry blood from the body to the heart

D. To carry blood from the lungs to the heart

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Q38. What is the function of the vena cava?

A. To carry deoxygenated blood from the body to the heart

B. To carry oxygenated blood from the heart to the body

C. To carry blood from the heart to the lungs

D. To carry blood from the lungs to the heart

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Q39. How many times does the human heart beat in a minute on average?

A. 30-40 times

B. 60-80 times

C. 100-120 times

D. 150-200 times

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Q40. What is the cardiac cycle?

A. One complete heartbeat including contraction and relaxation of all chambers

B. The process of blood clotting

C. The circulation of blood through the body

D. The production of blood cells

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Q41. What is systole?

A. The relaxation phase of the heart

B. The contraction phase of the heart

C. The pause between heartbeats

D. The filling of the heart chambers

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Q42. What is diastole?

A. The relaxation phase of the heart

B. The contraction phase of the heart

C. The pause between heartbeats

D. The emptying of the heart chambers

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Q43. What is the function of the heart's electrical conduction system?

A. To pump blood

B. To coordinate the contraction of heart muscles

C. To filter blood

D. To produce red blood cells

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Q44. What is the role of the atrioventricular node in the heart?

A. To initiate the heartbeat

B. To conduct electrical impulses from the atria to the ventricles

C. To pump blood

D. To filter blood

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Q45. What is the function of the pericardium?

A. To protect the heart and reduce friction

B. To pump blood

C. To filter blood

D. To produce blood cells

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Q46. Why is blood classified as a connective tissue?

A. Because it connects different organs

B. Because it has cells suspended in a liquid matrix (plasma)

C. Because it forms connections between tissues

D. Because it is found only in connective tissues

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Q47. What are the components of blood?

A. Only red blood cells

B. Plasma and blood cells (RBCs, WBCs, and platelets)

C. Only white blood cells

D. Only platelets

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Q48. What is the function of white blood cells?

A. To carry oxygen

B. To fight infections and provide immunity

C. To clot blood

D. To transport nutrients

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Q49. What is plasma?

A. The liquid part of blood containing water, proteins, and dissolved substances

B. The solid part of blood

C. The cells in blood

D. The pigments in blood

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Q50. What happens to the blood pressure if the arteries become narrow?

A. It decreases

B. It increases

C. It remains the same

D. It becomes zero

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