NEET Biology Body Fluids and Circulation MCQs Set F

Question: Lub sound produced by heart is caused by

• a) Ventricular systole
• b) Ventricular diastole
• c) Atrial diastole
• d) Atrial systole

Answer: Ventricular systole

Question: Which of the following is not a lymphoid organ

• a) Spleen
• b) Thymus
• c) Kidney
• d) Lymph nodes

Answer: Kidney

Question: In blood

• a) WBCs are more than RBCs
• b) RBCs are more than WBCs
• c) RBCs are less than platelets
• d) Platelets are less than WBCs

Answer: RBCs are more than WBCs

Question: Difference systolic and diastolic pressure is

• a) Blood pressure
• b) Pulse pressure
• c) Cardiac output
• d) Pulse

Answer: Pulse pressure

Question: The cation(mineral) necessary for coagulation of blood is

• a) Na
• b) Ca
• c) K
• d) Cl

Answer: Ca

Question: Volume of blood that enters aorta with each ventricular systole is

• a) Vital capacity
• b) Cardiac cycle
• c) Stroke volume
• d) Cardiac output

Answer: Stroke volume

Question: Arteries are best defined as vessels which

• a) Break up into capillaries which reunite to form a vein
• b) Carry blood away from heart to different organs
• c) Supply oxygenated blood to different organs
• d) Carry blood from one visceral organ to another visceral organ

Answer: Carry blood away from heart to different organs

Question: In which of the following situations, there is risk of erythroblastosisfoetalis

• a) Mother Rh⁺, father Rh⁺
• b) Mother Rh^-, father Rh^- 
• c) Mother Rh^-, father Rh⁺
• d) Mother Rh⁺, father Rh^-

Answer: Mother Rh^-, father Rh⁺

Question: Rh factor can produce

• a) AIDS
• b) Erythroblastosis foetalis
• c) Turner's syndrome
• d) Sickle cell anaemia

Answer: Erythroblastosis foetalis

Question: Which one prevents blood clotting in blood vessels?

• a) Heparin
• b) Fibrinogen
• c) Albumin
• d) Globulins

Answer: Heparin

Question: Cardiac output is determined by

• a) Blood flow
• b) Heart rate
• c) Stroke volume
• d) Both b and C

Answer: Both b and C

Question: Which is not detected in ECG?

• a) Arrhythmia
• b) Myocardial infection
• c) Heart block
• d) Valvular defects

Answer: Valvular defects

Question: heart of Cockroach has

• a) 14 chambers
• b) 13 chambers
• c) 4 chambers
• d) 3 chambers

Answer: 13 chambers

Question: Rh^- persons are 

• a) Homozygous dominant
• b) Homozygous recessive
• c) Heterozygous recessive
• d) None of the above

Answer: Homozygous recessive

Question: Blood protein which initiate blood coagulation is

• a) Prothrombin
• b) Thrombin
• c) Fibrinogen
• d) Fibrin

Answer: Prothrombin

Question: The heart sound murmur is heard during

• a) closing of bicuspid and tricuspid valve
• b) closing of aortic and pulmonary semilunar valves
• c) leaking of blood through one of valve
• d) None of the above

Answer: leaking of blood through one of valve

Question: For safe blood transfusion

• a) Donor's RBC should not contain antibodies against recipient's serum
• b) Recipient's serum should not contain antigens against donor's antibodies
• c) Recipient's serum should not contain antibodies against RBC of donors
• d) Recipient's RBC should not contain antibodies against donor's antigens

Answer: Recipient's serum should not contain antibodies against RBC of donors

Question: Which organ receives only oxygenated blood

• a) Gill
• b) Spleen
• c) Lung
• d) Liver

Answer: Spleen

Question: Erythroblastosisfoetalis occurs when a factor from mother passes into foetus through placenta

• a) Rh antigens
• b) Agglutinins
• c) Rh antibodies
• d) ABO antibodies.

Answer: Rh antibodies

Question: O blood group is universal donor because the blood has

• a) Antigen A
• b) Antigen B
• c) Both antigens A and B
• d) No antigens

Answer: No antigens

More Questions................................

Question: Blood buffer is formed of

• a) Haemoglobin and oxyhaemoglobin
• b) Oxygen and carbon dioxide
• c) Albumin and globulin
• d) Sodium bicarbonate and carbonic acid

Answer: Sodium bicarbonate and carbonic acid

Question: The most common type of haemophilia is due to congenital absence of

• a) Factor II
• b) Factor V
• c) Factor VIII
• d) Factor XI

Answer: Factor VIII

Question: The ratio of RBC to WBC in humans is

• a) 6 : 1
• b) 60 : 1
• c) 600 : 1
• d) 6000 : 1

Answer: 600 : 1

Question: Blood leaving liver and moving to heart will have more concentration of .

• a) Bile
• b) Glycogen
• c) Amino acids
• d) Urea

Answer: Urea

Question: 'Dup' sound is produced during closure of

• a) Semilunar valves
• b) Bicuspid valve
• c) Tricuspid valve
• d) Both B and C

Answer: Semilunar valves

Question: Parasympathetic nervous system

• a) Decreases heart beat
• b) Increases heart beat
• c) Starts heart beat
• d) Has no effect on heart beat

Answer: Decreases heart beat

Question: Increase in blood pressure is

• a) Arteriosclerosis
• b) Atherosclerosis
• c) Hypertension
• d) None

Answer: Hypertension

Question: Which one of the following is important phagocyte?

• a) RBC
• b) Basophils
• c) Eosinophils
• d) Monocytes

Answer: Monocytes

Question: Pace maker is

• a) Instrument for measuring heart beat
• b) Instrument for measuring pulse rate
• c) Auriculo-ventricular node that provides impulse for heart beat
• d) Sinu-auricular node that provides impulse for heart beat

Answer: Sinu-auricular node that provides impulse for heart beat

Question: Pulse pressure is

• a) Diastolic pressure
• b) Systolic pressure
• c) Difference between B and A
• d) Pressure in great veins

Answer: Difference between B and A

Question: How does the spleen help maintain blood?

• a) Platelets are stored there
• b) Defective RBCs and platelets are removed
• c) Red blood cells are produced there until death
• d) A and B are correct

Answer: A and B are correct

Question: Which is incorrect?

• a) Veins are typically larger in diameter than arteries.
• b) Because of their small size, blood flows more rapidly in capillaries than in other parts of circulatory system.
• c) Walls of arteries are elastic enabling them to stretch and shrink during changes in blood pressure
• d) Veins contain more blood than any other part of circulatory system

Answer: Veins contain more blood than any other part of circulatory system

Question: Identify correct statement regarding transport of respiratory gases through blood

• a) Only oxygen is transported
• b) Only CO₂ is transported
• c) haemoglobin is necessary for transport of O₂ and carbonic anhydrase for CO₂ 
• d) haemoglobin is necessary for transport of CO₂ and carbonic anhydrase for O₂

Answer:  haemoglobin is necessary for transport of O₂ and carbonic anhydrase for CO₂ 

Question: Why open circulatory system is advantageous to some animals

• a) They uses less metabolic energy
• b) They help animal to move faster
• c) They don’t need heart
• d) None of the above

Answer: They uses less metabolic energy

Question:

Statement:

1. Plasma constitutes 45% of blood.

2. Albumin is plasma protein involved in osmotic balance.

3. Blood clotting factors are present in blood.

4. Plasma without clotting factor in serum.

5. Minerals are not found in blood.

• a) 1 -4 correct, 5 wrong
• b) 1 -2 correct, 3,4,5 wrong
• c) 2,3,4 correct, 1 and 5 wrong
• d) 2 and 4 correct, 1,3,5 wrong

Answer: 2,3,4 correct, 1 and 5 wrong

Question: Amino acid functioning as buffer in blood is

• a) Histidine
• b) Glutamine
• c) Glutamic acid
• d) Lysine

Answer: Histidine

Question:  Match the following

• a) 1-c, 2 – a, 3 – e, 4 – b, 5 – d
• b) 1-d, 2 – a, 3 – e, 4 – c, 5 – d
• c) 1-d, 2 – a, 3 – c, 4 –e, 5 – b
• d) 1-c, 2 – b, 3 – e, 4 – b, 5 – a

Answer: 1-d, 2 – a, 3 – c, 4 –e, 5 – b

Question: Which is phagocytic structure of blood?

• a) Eosinophil
• b) Basophil
• c) Platelet
• d) Monocyte

Answer: Monocyte

Question: Which blood transfusion is correct

• a) A → AB
• b) B → A 
• c) AB → A 
• d) O → B

Answer:  O → B

Question: Largest number of white blood corpuscles are

• a) Eosinophils
• b) Basophils
• c) Neutrophils
• d) Monocytes

Answer: Neutrophils

Question: Which has the thickest wall?

• a) Right auricle
• b) Right ventricle
• c) Left auricle
• d) Left ventricle

Answer: Left ventricle

Question: Carotid artery carries

• a) Deoxygenated blood to brain
• b) Oxygenated blood to brain
• c) Oxygenated blood to heart
• d) None of the above

Answer: Oxygenated blood to brain

Question: Largest heart if of

• a) Giraffe
• b) Elephant
• c) Crocodile
• d) Lion

Answer: Elephant

Question: The volume of blood present in an adult

• a) 1 litre
• b) 2 litres
• c) 5 litres
• d) 10 litres

Answer: 5 litres

Question: The coagulation of blood occurs due to

• a) Destruction of RBC
• b) Destruction of WBC
• c) Destruction of lymph
• d) Destruction of blood platelets

Answer: Destruction of blood platelets

Question: Blood groups agglutinogen A and B are found

• a) In plasma
• b) On blood platelets
• c) On WBCs
• d) On RBCs

Answer: On RBCs

Question: The amount of water present in blood plasma is

• a) 90%
• b) 80%
• c) 70%
• d) 60%

Answer: 90%

Question: A vein that breaks up into capillaries is

• a) Pelvic vein
• b) Pulmonary vein
• c) renal vein
• d) Hepatic portal vein

Answer: Hepatic portal vein

Question: Sometimes RBCs form a pile or stack known as

• a) Lacuna
• b) Islet
• c) Rouleaux
• d) Canaliculi

Answer: Rouleaux

Question: A woman with blood group O marries a man of AB blood group. The blood group of their child would be

• a) AB and O
• b) A or B
• c) AB
• d) O

Answer: A or B

Question: What is correct about haemoglobin?

1. Oligomeric protein .

2. Chromoprotein

3. Monomeric protein

4. Keratin Options

• a) 1, 2, 3 correct
• b) 1, 2 correct
• c) 2, 4 correct
• d) 1, 3 correct

Answer: 1, 2 correct

Question: Interstitial fluid resembles

• a) fresh water
• b) ground water
• c) sea water
• d) none of the above

Answer: ground water

Question: Which term does not apply to human heart?

• a) Neurogenic
• b) Pacemaker
• c) Four chambered
• d) Mitral valve

Answer: Neurogenic

Question: Which one is present in tunica media?

• a) Collagen fibres and smooth muscles
• b) Yellow fibres and smooth muscles
• c) Yellow fibres and striated muscles
• d) Squamous epithelium and striated muscles

Answer: Yellow fibres and smooth muscles

Question: The difference between systolic and diastolic pressure in humans is

• a) 40 mmHg
• b) 80 mmHg
• c) 120 mmHg
• d) 200 mmHg

Answer: 40 mmHg

Question: Arteries are best defined as vessels which

• a) Break up into capillaries which reunite to form a vein
• b) Carry blood away from heart to different organs
• c) Supply oxygenated blood to different organs
• d) Carry blood from one visceral organ to another visceral organ

Answer: Carry blood away from heart to different organs

Question: Right atrium receives blood from

• a) Sinus venosus
• b) Pulmonary veins
• c) Inferior vena cava
• d) Superior and inferior vena cava

Answer: Superior and inferior vena cava

Question: Compared to those of humans, erythrocyte of Frog are

• a) With nucleus but without haemoglobin
• b) Nucleated and with haemoglobin
• c) Smaller and fewer
• d) Without nucleus

Answer: Nucleated and with haemoglobin

Question: Deoxygenated blood from wall of heart is carried by

• a) Coronary sinus
• b) Inferior vena cava
• c) Superior vena cava
• d) Pulmonary artery

Answer: Coronary sinus

Question: From which part of heart does the largest artery arise

• a) Left ventricle
• b) Right ventricle
• c) Left atrium
• d) Right atrium

Answer: Left ventricle