Class 11 Biology MCQ Chapter 15 Body Fluids And Circulation
Are you looking for Class 11 Biology MCQ Chapter 15 Body Fluids and Circulation English Medium? Then this article is the perfect study resource for AHSEC Higher Secondary First Year students. Here, you will find important multiple-choice questions (MCQs) with answers to help you prepare for your Biology examinations.
The chapter Body Fluids and Circulation explains how blood and other body fluids transport nutrients, oxygen, hormones, and waste materials throughout the body. Students will learn about blood, lymph, blood groups, the human circulatory system, cardiac cycle, electrocardiogram (ECG), and the structure and functions of the heart. These topics are important for understanding how the body maintains internal balance and supports life processes.
All MCQs are based on the latest AHSEC syllabus and examination pattern. These objective questions are designed to help students revise important concepts, improve their understanding, and assess their preparation before examinations. Regular practice can help increase confidence and improve performance in Biology.
Whether you are preparing for school tests, annual examinations, or the AHSEC HS First Year Examination, these MCQ solutions will help you strengthen your concepts and achieve better academic results.
Unit V. Human Physiology
Body Fluids And Circulation
VSA & MCQ
I. Short Answer Questions (1 Mark Each)
1. What is blood?
Ans: Blood is a fluid connective tissue consisting of plasma and formed elements.
2. What is plasma?
Ans: Plasma is the liquid component of blood that contains water, proteins, salts, and nutrients.
3. Name the three types of formed elements.
Ans: RBCs, WBCs, and Platelets.
4. What is the function of haemoglobin?
Ans: It transports oxygen in the blood.
5. What are leukocytes?
Ans: White blood cells that help in body defense.
6. What is lymph?
Ans: A colourless fluid containing lymphocytes that helps in immunity and transport of fats.
7. Define cardiac cycle.
Ans: One complete heartbeat including contraction and relaxation phases.
8. What is cardiac output?
Ans: Volume of blood pumped by the heart per minute (~5 L/min).
9. What is the SA node?
Ans: Sino-atrial node; the pacemaker of the heart.
10. What is systole?
Ans: Contraction phase of the heart.
11. What is diastole?
Ans: Relaxation phase of the heart.
12. What is double circulation?
Ans: Blood passes twice through the heart in one complete cycle.
13. What is ECG?
Ans: Electrocardiogram; recording of electrical activity of the heart.
14. What is the function of platelets?
Ans: Blood clotting.
15. What are plasma proteins?
Ans: Proteins like albumin, globulin, fibrinogen present in plasma.
II. Multiple Choice Questions (MCQs)
1. Blood is a type of:
(a) Muscle tissue
(b) Connective tissue
(c) Epithelial tissue
(d) Nervous tissue
Ans: (b)
2. The liquid part of blood is:
(a) Serum
(b) Plasma
(c) Lymph
(d) Platelets
Ans: (b)
3. RBCs are formed in:
(a) Liver
(b) Bone marrow
(c) Kidney
(d) Heart
Ans: (b)
4. Haemoglobin contains:
(a) Copper
(b) Iron
(c) Zinc
(d) Calcium
Ans: (b)
5. WBCs help in:
(a) Oxygen transport
(b) Digestion
(c) Immunity
(d) Circulation
Ans: (c)
6. Platelets are involved in:
(a) Respiration
(b) Digestion
(c) Clotting
(d) Excretion
Ans: (c)
7. Normal human heart has:
(a) 2 chambers
(b) 3 chambers
(c) 4 chambers
(d) 5 chambers
Ans: (c)
8. The pacemaker of the heart is:
(a) AV node
(b) SA node
(c) Bundle of His
(d) Purkinje fibers
Ans: (b)
9. Lymph lacks:
(a) WBCs
(b) Proteins
(c) RBCs
(d) Water
Ans: (c)
10. The contraction phase is called:
(a) Diastole
(b) Systole
(c) Pulse
(d) Flow
Ans: (b)
11. The relaxation phase is called:
(a) Systole
(b) Diastole
(c) Pulse
(d) Rhythm
Ans: (b)
12. ECG records:
(a) Blood pressure
(b) Electrical activity
(c) Pulse rate
(d) Oxygen level
Ans: (b)
13. P-wave represents:
(a) Ventricular contraction
(b) Atrial depolarization
(c) Ventricular relaxation
(d) Blood flow
Ans: (b)
14. QRS complex represents:
(a) Atrial relaxation
(b) Ventricular depolarization
(c) Atrial contraction
(d) Blood pressure
Ans: (b)
15. T-wave represents:
(a) Atrial contraction
(b) Ventricular repolarization
(c) Blood flow
(d) Pulse
Ans: (b)
16. Universal recipient blood group is:
(a) A
(b) B
(c) AB
(d) O
Ans: (c)
17. Universal donor blood group is:
(a) AB
(b) O
(c) A
(d) B
Ans: (b)
18. The valve between left atrium and left ventricle is:
(a) Tricuspid
(b) Bicuspid
(c) Semilunar
(d) Aortic
Ans: (b)
19. The right side of heart carries:
(a) Oxygenated blood
(b) Deoxygenated blood
(c) Mixed blood
(d) Plasma only
Ans: (b)
20. Blood pressure is measured using:
(a) ECG
(b) Stethoscope
(c) Sphygmomanometer
(d) Thermometer
Ans: (c)
21. The main protein in plasma is:
(a) Haemoglobin
(b) Albumin
(c) Myosin
(d) Actin
Ans: (b)
22. Fibrinogen helps in:
(a) Immunity
(b) Clotting
(c) Transport
(d) Digestion
Ans: (b)
23. Globulins help in:
(a) Oxygen transport
(b) Immunity
(c) Clotting
(d) Digestion
Ans: (b)
24. Fish have:
(a) 4 chambered heart
(b) 3 chambered heart
(c) 2 chambered heart
(d) 5 chambered heart
Ans: (c)
25. Amphibians have:
(a) 2 chambered
(b) 3 chambered
(c) 4 chambered
(d) 1 chambered
Ans: (b)
26. Mammals have:
(a) 2 chambered
(b) 3 chambered
(c) 4 chambered
(d) 5 chambered
Ans: (c)
27. Pulse is:
(a) Blood pressure
(b) Heartbeat felt in arteries
(c) Blood flow in veins
(d) Oxygen level
Ans: (b)
28. AV node is located in:
(a) Ventricle
(b) Atrium
(c) Septum
(d) Artery
Ans: (b)
29. Double circulation is seen in:
(a) Fish
(b) Amphibians
(c) Mammals
(d) Insects
Ans: (c)
30. Lymph transports:
(a) Oxygen
(b) Carbon dioxide
(c) Fats
(d) Nitrogen
Ans: (c)
