MCQ Questions for Class 11 Biology Chapter 18 Body Fluids and Circulation with Answers

Solving the Body Fluids and Circulation Multiple Choice Questions of Class 11 Biology Chapter 18 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Body Fluids and Circulation Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 18 Biology Class 11 and cross-check your answers during preparation.

I. Select the correct answer from the following questions:

Question 1.
Heart is incompletely 4 chambered in
(a) Amphibian
(b) Birds
(c) Fishes
(d) Reptiles

Answer

Answer: (d) Reptiles


Question 2.
Blood will lose maximum O2 while passing through
(a) Left atrium
(b) Arteries
(c) Tissue capillaries
(d) Alvelor capillaries

Answer

Answer: (c) Tissue capillaries


Question 3.
Ventricular systole is stimulated by
(a) S-A node
(b) A-V aperture
(c) A-V node
(d) A-V valve

Answer

Answer: (c) A-V node


Question 4.
Lymph lacks
(a) Erythrocytes
(b) Plasma proteins
(c) Platelets
(d) All of these

Answer

Answer: (d) All of these


Question 5.
The sound dupp in heart is produced by
(a) Closure of semilunar valves
(b) Closure of A-V valves
(c) Opening of A-V Valves
(d) Opening of semilunar valves

Answer

Answer: (a) Closure of semilunar valves


Question 6.
Heart beat initiates from
(a) Bundle of his
(b) Purkinje fibres
(c) Sinuauricular node
(d) Auriculoventricular node

Answer

Answer: (c) Sinuauricular node


Question 7.
Pulmonary vein carries
(a) Pure blood from heart
(b) Impure blood from lungs
(c) Pure blood from lungs
(d) Impure blood from heart

Answer

Answer: (c) Pure blood from lungs


Question 8.
Blood and lymph differ in
(a) Blood has cells while lymph is without cells
(b) Blood has RBCs which are absent in lymph
(c) Blood has several inorganic substances which are absent in lymph
(d) Blood has WBCs which are absent in lymph

Answer

Answer: (b) Blood has RBCs which are absent in lymph


Question 9.
Blood platelets are source of
(a) Calcium
(b) Fibrinogen
(c) Haemoglobin
(d) Thrombolastin

Answer

Answer: (d) Thromboplastin


Question 10.
Pacemaker of the heart is
(a) A-V node
(b) I-A septum
(c) S-A node
(d) A-V septum

Answer

Answer: (c) S-A node


Question 11.
Valves are found in veins to check the back flow of the blood, flowing under
(a) Low pressure
(b) High pressure
(c) Very high pressure
(d) No pressure

Answer

Answer: (a) Low pressure


Question 12.
The vessel carrying blood to Bowman’s capsule is
(a) Efferent arteriole
(b) Afferent arteriole
(c) Pulmonary vein
(d) Renal vein

Answer

Answer: (b) Afferent arteriole


Question 13.
Thrombin occurs in vertebrates in
(a) Blood and important for clotting
(b) Liver and initiates secretion
(c) Stomach and digests proteins
(d) Blood and imparts red colour

Answer

Answer: (a) Blood and important for clotting


Question 14.
The blood pressure is measured by the instrument
(a) Stethoscope
(b) Echocariograph
(c) Sphymomanometer
(d) Electrocardiograph

Answer

Answer: (c) Sphymonanometer


Question 15.
Which of the following carries oxygenated blood from the lungs to the heart
(a) Pulmonary veins
(b) Renal vein
(c) Hepatic vein
(d) Jugular vein

Answer

Answer: (a) Pulmonary veins


Question 16.
A pacemaker is meant for
(a) Transplanting heart
(b) Transplanting liver
(c) Regulation of blood flow
(d) Initiation of heart beats

Answer

Answer: (d) Initiation of heart beats


Question 17.
In which animal haemoglobin is dissolved
(a) Earthworm
(b) Frog
(c) Cockroach
(d) Rabbit

Answer

Answer: (a) Earthworm


Question 18.
Blood circulation was first discovered by
(a) His
(b) Darwin
(c) Lansteiner
(d) Harvey

Answer

Answer: (d) Harvey


Question 19.
Average heart beat/pulse rate in adult human being is
(a) 80/ minute
(b) 72/minute
(c) 100/minute
(d) 60/minute

Answer

Answer: (b) 72/minute


Question 20.
Normal blood pressure in an adult human beings is
(a) 200/110
(b) 120/80
(c) 100/60
(d) 150/100

Answer

Answer: (b) 120/80


II. Fill in the blanks:

Question 1.
…………. is the most commonly used body fluid by most of the higher organisms including ………… for this purpose.

Answer

Answer: Blood, humans


Question 2.
Another body fluid, …………. also helps in the transport of certain substances.

Answer

Answer: lumph


Question 3.
Blood is a special connective tissue consisting of a fluid matrix, …………. and formed elements.

Answer

Answer: plasma


Question 4.
…………., …………. and …………. are the major proteins.

Answer

Answer: Fibrinogen, globulins, albumins


Question 5.
Plasma is a ………… coloured, viscous fluid constituting nearly …………. percent of the blood.

Answer

Answer: straw, 55


Question 6.
Plasma also contains small amount of minerals like ……………….. etc.

Answer

Answer: Ca++, Mg++, HCO3Cl


Question 7.
RBCs are formed in the …………… in the adults.

Answer

Answer: red bone marrow


Question 8.
A healthy individual has ………….. gms of haemoglobin in every 100 ml of blood.

Answer

Answer: 12-16


Question 9.
………….. are also known as white blood cells.

Answer

Answer: Leucocytes


Question 10.
Both ………….. are responsible for immune responses of the body.

Answer

Answer: B and T lymphocytes


Question 11.
Platelets also called …………… are cell fragments produced from ……………. (special cells in the bone marrow).

Answer

Answer: thrombocytes, megakryocytes


Question 12.
The distribution of antigens and antibodies in the four groups of blood. ………….., ……….., ………. and …………. are given

Answer

Answer: A, B, AB, O


Question 13.
Such individuals are called ……………. and those in whom this antigen is absent are called ……………

Answer

Answer: Rh positive (Rh+ve), Rh negative (Rh-ve)


Question 14.
A specialised cardiac musculature called the ……………. is also distributed in the heart.

Answer

Answer: nodal tissue


Question 15.
These branches give rise to minute fibres throughout the ventricular musculature of the respective sides and are called ……………

Answer

Answer: purkinje fibres


III. Mark the statements True (T) or False (F):

Question 1.
The SAN can generate maximum number of action potentials i.e., 70-75 per minute and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore, it is called the pacemaker.

Answer

Answer: True


Question 2.
Ventricular systole increases the ventricular pressure causing the closure of tricuspid and bicuspid valves due to attempted backflow of blood into the atria.

Answer

Answer: True


Question 3.
Our heart normally beats 50-60 times in a minute.

Answer

Answer: False


Question 4.
During a cardiac cycle, each ventricle pumps out approximately 70 ml of blood which is called the stroke volume

Answer

Answer: True


Question 5.
The cardiac output of an athlete will be much higher than that of an ordinary man

Answer

Answer: True


Question 6.
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope

Answer

Answer: True


Question 7.
ECG is a graphical representation of the electrical activity of the heart during a cardiac cycle

Answer

Answer: True


Question 8.
To obtain a standard ECG, a patient is connected to the machine with three electrical leads (one to each wrist and to the left ankle) that continuosly monitor the heart activity

Answer

Answer: True.


Question 9.
The T-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.

Answer

Answer: False


Question 10.
The P-wave represents the return of the ventricles from excited to normal state (repolarisation).

Answer

Answer: False


Question 11.
A special coronary system of blood vessels is present in our body exclusively for the circulation of blood to and from the cardiac musculature.

Answer

Answer: True


Question 12.
Adrenal medullary 7 hormones can also increase the cardiac output.

Answer

Answer: True


Question 13.
Hypertension is the term for blood pressure that is higher than normal (120/80). High blood pressure leads to heart diseases and also affects vital organs like brain and kidney.

Answer

Answer: True


Question 14.
Coronary Artery Disease, often referred to as atherosclerosis, affects the vessels that supply blood to the heart muscle.

Answer

Answer: True


Question 15.
Heart failure means the state of heart which is not pumping blood effectively enough to meet the needs of the body.

Answer

Answer: True


IV. Match the items of Column I with the items of Column II Column

Column IColumn II
(a) Angina pectoris1. Systolic
(b) 120 mm Hg (milimetres of mercury pressure)2. Diastolic
(c) 80 mm Hg (milimetres of mercury pressure)3. myogenic
(d) Heart is called4. A symptom of acute chest pain appears when enough oxygen is not reaching the heart muscle.
(e) Plasme is a5. Water and proteins contribute 6-8 pecent of it.
(f) 90-92 percent of plasma is6. against the Rh antigens
(g) Erythrocytes or7. White blood cells (WBC)
(h) Leucocytes8. Straw coloured
(i) Thrombocytes9. called ‘Universal donors
(j) ‘O’ group individuals are10. Red blood ceils (RBC)
(k) AB group11. Called ‘Universal recipients
(l) An Rh-ve person if exposed to Rh+Ve blood will form specific antibodies12. Platelets
(m) Lymph is a colourless fluid containing specialised lymphocytes13. Which are responsible for the immune responses of the body.
(n) Annelids and chordates have a14. Closed circulatory system.
(o) Rh antigens of the foetus do not get exposed to the Rh-ve blood of15. the mother in the first pregnancy as the two bloods are well separated by the placenta.
Answer

Answer:

Column IColumn II
(a) Angina pectoris4. A symptom of acute chest pain appears when enough oxygen is not reaching the heart muscle.
(b) 120 mm Hg (milimetres of mercury pressure)1. Systolic
(c) 80 mm Hg (milimetres of mercury pressure)2. Diastolic
(d) Heart is called3. myogenic
(e) Plasme is a8. Straw coloured
(f) 90-92 percent of plasma is5. Water and proteins contribute 6-8 pecent of it.
(g) Erythrocytes or10. Red blood ceils (RBC)
(h) Leucocytes7. White blood cells (WBC)
(i) Thrombocytes12. Platelets
(j) ‘O’ group individuals are9. called ‘Universal donors
(k) AB group11. Called ‘Universal recipients
(l) An Rh-ve person if exposed to Rh+Ve blood will form specific antibodies6. against the Rh antigens
(m) Lymph is a colourless fluid containing specialised lymphocytes13. Which are responsible for the immune responses of the body.
(n) Annelids and chordates have a14. Closed circulatory system.
(o) Rh antigens of the foetus do not get exposed to the Rh-ve blood of15. the mother in the first pregnancy as the two bloods are well separated by the placenta.

 


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