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NEET • BIOLOGY • BODY FLUIDS AND CIRCULATION
Body fluids and circulation practice · Mixed difficulty
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241
Hard
241 of 335
Understanding
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Select the incorrect statements
I. Barr body is another name for neutrophils
II. Agranulocytes are formed in the red bone marrow
III. Granulocytes are formed is the spleen and lymph node
IV. Lymphocytes exists as two major types, B and T lymphocytes
The correct option with incorrect statement is
I. Barr body is another name for neutrophils
II. Agranulocytes are formed in the red bone marrow
III. Granulocytes are formed is the spleen and lymph node
IV. Lymphocytes exists as two major types, B and T lymphocytes
The correct option with incorrect statement is
View answer and explanation
Correct option: A
I, II and III
Option A (I, II and III) is correct because Barr bodies are inactivated X chromosomes in females, agranulocytes are formed in the red bone marrow, and granulocytes are formed in the red bone marrow, not the spleen and lymph nodes.
242
Medium
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Remembering
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Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?
View answer and explanation
Correct option: B
Blood sugar - 70 – 100 mg/100 mL
(fasting)
(fasting)
Option B is correct because the normal fasting blood sugar level in a healthy human adult ranges from 70 to 100 mg/100 mL.
243
Medium
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Remembering
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Which one of the following is matching pair?
View answer and explanation
Correct option: A
Lubb - Sharp closure of AV valves at the beginning of ventricular systole
Option A (Lubb - Sharp closure of AV valves at the beginning of ventricular systole) is correct because the "Lubb" sound corresponds to the closing of the atrioventricular valves.
244
Hard
244 of 335
Remembering
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Which of the following statements are incorrect
w.r.t Basophils?
A. Basophils are most abundant cells of the total
WBCs
B. Basophils secrete histamine, serotonin and
heparin
C. Basophils are involved in inflammatory response
D. Basophils have kidney shaped nucleus
E. Basophils are agranulocytes
Choose the correct answer from the options given below:
w.r.t Basophils?
A. Basophils are most abundant cells of the total
WBCs
B. Basophils secrete histamine, serotonin and
heparin
C. Basophils are involved in inflammatory response
D. Basophils have kidney shaped nucleus
E. Basophils are agranulocytes
Choose the correct answer from the options given below:
View answer and explanation
Correct option: C
A, D and E only
Option C (A, D and E only) is correct because basophils are the least abundant WBCs, have a lobed nucleus, and are granulocytes, not agranulocytes.
245
Easy
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Remembering
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In bird and mammals, the oxygenated blood received by …A… and deoxygenated blood receive by …B… . The ventricles pump in out without any mixing up of oxygenated and deoxygenated blood
Choose the correct option for A and B
Choose the correct option for A and B
View answer and explanation
Correct option: A
A-left atria, B-right atria
Option A (A-left atria, B-right atria) is correct because oxygenated blood enters the left atria and deoxygenated blood enters the right atria in birds and mammals.
246
Easy
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Remembering
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Bicuspid valves are found in between
View answer and explanation
Correct option: C
Left ventricle and left auricle
Option C (Left ventricle and left auricle) is correct because the bicuspid (mitral) valve is located between the left atrium (auricle) and the left ventricle.
247
Medium
247 of 335
Remembering
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Atherosclerosis is called
View answer and explanation
Correct option: A
Coronary artery disease
Option A (Coronary artery disease) is correct because atherosclerosis is a major underlying cause of coronary artery disease.
248
Easy
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Remembering
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During each cardiac cycle, prominant sounds are produced which can be easily heard through stethoscope. They are
View answer and explanation
Correct option: D
Both (a) and (b)
Option D (Both (a) and (b)) is correct because the two prominent heart sounds heard through a stethoscope are "Lub" and "Dub".
249
Easy
249 of 335
Understanding
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All are correct for contractile tissue present in heart except
View answer and explanation
Correct option: C
When one cell receives a signal to contract, its neighbours cell will also need signal to contract
Option C (When one cell receives a signal to contract, its neighbours cell will also need signal to contract) is correct because cardiac muscle cells are connected by gap junctions within intercalated discs, allowing for rapid spread of electrical signals and coordinated contraction without each cell needing an independent signal.
250
Easy
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Understanding
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Which one is correct?
View answer and explanation
Correct option: A
Blood = Plasma + RBCs + WBCs + Blood platelets
Option A is correct because blood is composed of plasma, red blood cells (RBCs), white blood cells (WBCs), and blood platelets.
251
Easy
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Remembering
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As the blood passes through the capillaries some water along with small water soluble substances move out into the spaces between the cells of the tissues. This fluid released out is called the
View answer and explanation
Correct option: B
Interstitial fluid
Option B (Interstitial fluid) is correct because interstitial fluid is the fluid that surrounds cells in tissues, formed by filtration of plasma from capillaries.
252
Medium
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Remembering
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Papillary muscles are associated with
View answer and explanation
Correct option: B
Ventricles of heart
Option B (Ventricles of heart) is correct because papillary muscles are located within the ventricles of the heart.
253
Easy
253 of 335
Understanding
+4 | -1
Which of the following is first to receive lymphatic duct from legs.
View answer and explanation
Correct option: D
thoracic lymphatic duct
Option D (thoracic lymphatic duct) is correct because the thoracic duct receives lymph from the legs and most of the body.
254
Easy
254 of 335
Remembering
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Coagulation of blood in blood vessels in living body is prevented by
View answer and explanation
Correct option: B
Heparin
Option B (Heparin) is correct because Heparin is a natural anticoagulant that prevents blood clotting within blood vessels.
255
Hard
255 of 335
Remembering
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The heartbeat of which animals is myogenic in nature
View answer and explanation
Correct option: C
Elephant
Option C (Elephant) is correct because mammals, including elephants, have myogenic hearts, meaning the heartbeat is initiated within the heart muscle itself.
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256
Easy
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Understanding
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On blood typing, a person's blood was found to agglutinate with anti-B serum but not with anti-A. The blood group of this person is
View answer and explanation
Correct option: B
B
Option B (B) is correct because agglutination with anti-B serum indicates the presence of B antigens on the red blood cells, defining blood group B.
257
Medium
257 of 335
Understanding
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Parasympathetic neural signal decreases the cardiac output by
View answer and explanation
Correct option: D
Both (1) and (2)
Option D (Both (1) and (2)) is correct because parasympathetic signals decrease cardiac output by slowing the heart rate and conduction speed.
258
Hard
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Remembering
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Which of the following are component of blood:
(a) Plasma protein
(b) and
(c) Water
(d) Monocytes
(e) Basophils
(a) Plasma protein
(b) and
(c) Water
(d) Monocytes
(e) Basophils
View answer and explanation
Correct option: D
All
Option D (All) is correct because plasma proteins, ions (Na+, Ca+2, Mg+2, Cl-), water, monocytes, and basophils are all components of blood.
259
Easy
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Remembering
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Open circulatory system is present in
I) Arthropods
II) Annelids
III) Chordates
IV) Molluscs
I) Arthropods
II) Annelids
III) Chordates
IV) Molluscs
View answer and explanation
Correct option: C
I and IV
Option C (I and IV) is correct because arthropods and molluscs (except cephalopods) possess an open circulatory system.
260
Easy
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Remembering
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The myocardium is found in
View answer and explanation
Correct option: A
Heart of mammals
Option A (Heart of mammals) is correct because the myocardium is the muscular tissue of the heart.
261
Easy
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Remembering
+4 | -1
Atherosclerosis is also referred to as
View answer and explanation
Correct option: B
CAD
Option B (CAD) is correct because atherosclerosis is a primary cause of Coronary Artery Disease (CAD).
262
Easy
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Remembering
+4 | -1
Tricuspid valve is present in
View answer and explanation
Correct option: A
Right atria and right ventricle
Option A (Right atria and right ventricle) is correct because the tricuspid valve is located between the right atrium and the right ventricle.
263
Easy
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Understanding
+4 | -1
Blood pressure can be best defined as.
View answer and explanation
Correct option: B
Pressure exerted against the wall of brachial artery
Option B (Pressure exerted against the wall of brachial artery) is correct because blood pressure is commonly measured at the brachial artery.
264
Hard
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Understanding
+4 | -1
Elevation in of blood will
View answer and explanation
Correct option: B
Increase the affinity of haemoglobin with oxygen
Option B (Increase the affinity of haemoglobin with oxygen) is correct because an increase in pH (more alkaline conditions) increases the affinity of hemoglobin for oxygen, according to the Bohr effect.
265
Hard
265 of 335
Understanding
+4 | -1
In which of the following options the types of heart is correctly matched to their respective group of animals?
View answer and explanation
Correct option: C
Four chambered heart- Birds and mammals
Option C (Four chambered heart- Birds and mammals) is correct because birds and mammals both have four-chambered hearts, allowing for complete separation of oxygenated and deoxygenated blood.
266
Medium
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Analyzing
+4 | -1
Assertion: In lymphatic system, lymph is known
as tissue fluid.
Reason: It comprises of plasma proteins, RBCs
and WBCs.
as tissue fluid.
Reason: It comprises of plasma proteins, RBCs
and WBCs.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because lymph is tissue fluid, but it does not contain RBCs.
267
Hard
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Remembering
+4 | -1
A. pH of blood : (P)
B. Blood forms (W)% of the total body weight
C. Proteins from (Pr)% of plasma
D. The thickness of RBC (R) micrometer
The correct arrangement of the above value is
B. Blood forms (W)% of the total body weight
C. Proteins from (Pr)% of plasma
D. The thickness of RBC (R) micrometer
The correct arrangement of the above value is
View answer and explanation
Correct option: A
W P Pr R
Option B (W > Pr > P > R) is correct because the approximate percentages and values are: Blood forms (W) 8% of body weight, Proteins form (Pr) 7% of plasma, pH of blood (P) is 7.4, and the thickness of RBC (R) is 2 micrometer.
268
Hard
268 of 335
Remembering
+4 | -1
The renal portal system is made of
View answer and explanation
Correct option: D
Femoral, sciatic, renal portal veins
Option D (Femoral, sciatic, renal portal veins) is correct because the renal portal system is formed by the femoral and sciatic veins which join to form the renal portal vein.
269
Easy
269 of 335
Understanding
+4 | -1
Deoxygenated blood pumped into the pulmonary artery is passed on to the lungs from where the
oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes
oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes
View answer and explanation
Correct option: D
Pulmonary circulation
Option D (Pulmonary circulation) is correct because the pathway described involves deoxygenated blood going to the lungs and oxygenated blood returning to the heart, which is the definition of pulmonary circulation.
270
Hard
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Understanding
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Assertion: WBCs accumulate at site of wounds by diapedesis.
Reason: It is squeezing of leucocytes from endothelium.
Reason: It is squeezing of leucocytes from endothelium.
View answer and explanation
Correct option: B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
Option B (If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion) is correct because while both statements are true, diapedesis is the process of WBCs squeezing through capillary walls, and the accumulation at wound sites is due to chemotaxis.
Revision notes and key takeaways
Review BODY FLUIDS AND CIRCULATION in your textbook or class notes, then use this set to check your understanding.
Showing 241-270 of 335 questions
