Which of the following cell/cells will play a role in phagocytosis?

  • monocytes

  • Neutrophils

  • Lymphocyte

  • both (1) and (2)

Which of the following cell/cells will play a role in immune responses?

  • Ganulocytes

  • Neutrophils

  • Lymphocytes

  • Macrophages

Which of the following sequence is correct in terms of abundance?

  • Neutrophils > Lymphocytes > Monocytes > Eosinophils > Basophils

  • Neutrophils > Lymphocytes < Monocytes > Eosinophils > Basophils

  • Neutrophils < Lymphocytes > Monocytes > Eosinophils > Basophils

  • Neutrophils > Lymphocytes > Monocytes < Eosinophils > Basophils

Which of the following cell/cells are not Granulocytes?

  • Eosinophil

  • Basophil

  • Lymphocyte

  • Neutrophils

If a person is AB, who cannot donate blood to this person?

  • any person with Rh antigen

  • any person with O+ only

  • any person with AB

  • all people except A+

A person with blood group O can take blood from

  • O+ person

  • O person

  • A+ person

  • both (1) and (2)

Fibrins are formed by conversion of _______ in _______ by the enzyme _______

  • Fibrinogen, serum, Thrombokinase

  • prothrombin, plasma, thrombin

  • Fibrinogen, plasma, thrombin

  • Prothrombin, blood, thrombokinase

During the initiation of coagulation of blood, the platelets are activated by–

  • Thrombin

  • Trauma

  • Ca++

  • Thrombokinase

To avoid Erythroblastosis Foetalis–

  • the mother is administered anti–Rh antibodies.

  • the baby is administered Rh antibodies.

  • the mother is administered Rh antibodies

  • the baby is administered anti–Rh antibodies

RBCs in human are:

  • Biconcave-and nucleated

  • Biconvex and nucleated

  • Biconcave and enucleated

  • Biconvex and enucleated

Histamine, serotonin and heparin are secreted by:

  • Thrombocytes

  • Lymphocytes

  • Monocytes

  • Basophils

B and T forms, responsible for the immune response are the type of:

  • Thrombocytes

  • Lymphocytes

  • Eosinophils

  • Granulocytes

Assertion             :       In mollusca, circulatory system is of closed type.

Reason               :       The blood of mollusca contains haemoglobin

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion  :       Histamine is involved in allergic and inflammatory reactions.

Reason     :       Histamine is a vasodilator

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Heart valves resemble swing doors in action.

Reason      :       Valves are present in the heart chamber, at the opening of the heart into large arteries and veins.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion     :  Closed circulatory system is more effective than open type.

Reason        :  The closed circulatory system considerably enhances the speed, precision and efficiency of circulation.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Cardiac output rises during exercise.

Reason      :       Cardiac output helps in less oxygen consumption.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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The most active phagocytic white blood cells are
  •   neutrophils and eosinophils

  •   lymphocytes and macrophages

  •   eosinophils and lymphocytes

  •   neutrophils and monocytes

Assertion    :       EEG is of immense diagnostic value in the cardiac diseases.

Reason      :       Defects in cardiac functions can be reflected in changes in the pattern of electrical potentials recorded in the EEG. 

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       An artificial pacemaker can replace the sinoatrial node of heart.

Reason      :       This is because, an artificial pacemaker is capable of stimulating the heart electrically to maintain its beats.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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  • 3
  • 4

Assertion   :       Mixing of oxygenated and deoxygenated blood occurs in reptilian and amphibian hearts.

Reason      :       This happens because of the incomplete partitioning of the auricle.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Left ventricle of heart has a thinner wall than that of the right ventricle.

Reason      :       Left ventricle needs to pump blood to nearby lungs only.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Heart of fish contains only deoxygenated blood.

Reason      :       Oxygenated blood do not return back to the heart in fishes.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Blood flows at a very slow velocity in the lacunae and sinuses of prawn.


Reason      :       This happens because of the absence of heart in the prawn.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       The increased permeability of the lymph capillaries is easily altered.

Reason      :       The increased permeability of the capillary walls leads to oedema or swelling.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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Assertion   :       Blood pressure is arterial blood pressure.

Reason      :       It is measured by sphygmomanometer.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
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  • 3
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Assertion: Electrocardiogram is record or electrical activity of the heart which shows certain waves called P, Q, R, S and T waves.

Reason: It gives important information concerning the spread of excitation to the different parts of heart and it is of value in the diagnosis of cases of abnormal cardiac rhythm and myocardial damage.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Total count of RBC comes out to be very low in polycythemia.

Reason      :       Number of erythrocytes get reduced in the condition of polycythemia.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
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Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?

  • White blood cells

  • Unstiated muscle cells

  • Liver cells

  • Red blood cells

In humans, blood passes from the post caval to the diastolic right atrium of heart due to
  •   pushing open of the venous valves

  •   suction pull

  •   stimulation of the sino auricular node

  •   pressure difference between the caval and atrium

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Practice Zoology Quiz Questions and Answers