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Body Fluids and Circulation MCQs for NEET — Zoology Questions with Answers

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Platelets are formed from–

Megakaryoblast

Megakaryocyte

Macrokaryoblast

Macrophages

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Explanation

NCERT, P -280, Para 2

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______ population has Rh ______ on the surface of ______ present in their ______.

20%, antigen, platelets, plasma

80%, antigen, RBC, blood

80%, antibody, platelet, plasma

20%, antibody, RBC, blood

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Explanation

NCERT, P -281, Rh Grouping

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If a person gets his blood count done from a lab and finds his platelets to be 20000 and then meets an accident on that day. Which of the following is correct?

as the platelet count is normal, there will be no harm to him because of platelets.

Clotting disorders

Severe Blood loss from body

both (2) and (3)

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Explanation

He has very less platelets count- No blood clotting- Death

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The number of RBC in a healthy individual are:

5 million to 5.5 million RBCs

5 billion to 5.5 billion RBCs

1 million to 1.5 million RBCs

1 billion to 1.5 billion RBCs

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Explanation

NCERT, P-279, Formed Elements

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The transport of respiratory gases is taken care by which blood component?

RBC

WBC

Platelets

Fibrinogen

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Explanation

NCERT, P-279, Formed Elements

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Hemoglobin in healthy individual:

12–20 g/10 mL of blood

12–14 g/100 mL of blood

12–30 g/10 mL of blood

12–14 g/10 mL of blood

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Explanation

NCERT, P-279, Formed Elements

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Which of the following cell will play a role in resistance of infection and allergic reaction?

Eosinophil

Basophil

Lymphocyte

Neutrophils

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Explanation

NCERT, P-279, Formed Elements, last Para

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

monocytes

Neutrophils

Lymphocyte

both (1) and (2)

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Explanation

NCERT, P-279, Formed Elements, last Para

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

Ganulocytes

Neutrophils

Lymphocytes

Macrophages

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Explanation

NCERT, P-280, 2^nd line

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Which of the following cell/cells will secrete histamine, serotonin, heparin?

Eosinophil

Basophil

Lymphocyte

Neutrophils

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Explanation

NCERT, P-279, Formed Elements, last Para

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