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

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

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

Which of the following cell/cells are not Granulocytes?

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

A person with blood group O^– can take blood from

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

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

To avoid Erythroblastosis Foetalis–

RBCs in human are:

Histamine, serotonin and heparin are secreted by:

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

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

Reason               :       The blood of mollusca contains haemoglobin

Assertion  :       Histamine is involved in allergic and inflammatory reactions.

Reason     :       Histamine is a vasodilator

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.

Assertion     :  Closed circulatory system is more effective than open type.

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

Assertion   :       Cardiac output rises during exercise.

Reason      :       Cardiac output helps in less oxygen consumption.

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. 

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.

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

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

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.

Assertion   :       Heart of fish contains only deoxygenated blood.

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

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.

Assertion   :       The increased permeability of the lymph capillaries is easily altered.

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

Assertion   :       Blood pressure is arterial blood pressure.

Reason      :       It is measured by sphygmomanometer.

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.

Assertion   :       Total count of RBC comes out to be very low in polycythemia.

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

Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?