All of the following is correct regarding platelets except:

C. Different types, sizes and shapes

A. They are also called thrombocytes

C. Different types, sizes and shapes

D. They are formed in bone marrow

Why is the spleen called the graveyard of RBCs?

C. It breaks down old and damaged RBCs

A. It produces new red blood cells

B. It stores excess red blood cells

C. It breaks down old and damaged RBCs

D. It transports RBCs to the liver

Everyday Science · Circulatory System (Human Biology) · page 5 of 6

Blood Cells MCQs with Answers

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Blood Cells MCQs (41–50)

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Past paper MCQs in this chapter · See all past papers

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41.
All of the following is correct regarding platelets except:
Correct Answer: C. Different types, sizes and shapes
One-liner
Platelets are not of different types, sizes and shapes; they are fairly uniform, small, disc-shaped cell fragments.
42.
Anti-bodies are produced by _?
Correct Answer: A. B-lymphocytes
One-liner
Antibodies are produced by B-lymphocytes (B-cells), which are specialized white blood cells of the immune system.
43.
Oxygen is transported to the cells of the human body through ?
Correct Answer: D. Red blood cells
One-liner
Oxygen is transported to the cells of the human body through red blood cells.
44.
Another name of Erythrocyte is _?
Correct Answer: B. Red Blood Cell
One-liner
Another name of Erythrocyte is Red Blood Cell.
45.
Past Paper MCQ
Why is the spleen called the graveyard of RBCs?
Correct Answer: C. It breaks down old and damaged RBCs
One-liner
The spleen is called the graveyard of RBCs because it breaks down old and damaged RBCs and recycles their components like iron and globin.
46.
Defense system to body is provided by ?
Correct Answer: A. Leukocytes
One-liner
The defense system of the body is provided by Leukocytes (white blood cells), which fight infections and protect against foreign invaders.
47.
Colourless, irregular in shape, nucleated and larger sized cell than R.B.Cs called?
Correct Answer: A. Leucocytes
One-liner
Colourless, irregularly shaped, nucleated cells that are larger than RBCs are called Leucocytes (White Blood Cells).
48.
Leukemia is the defect of _?
Correct Answer: B. White Blood Cells
One-liner
Leukemia is a cancer that affects the White Blood Cells, causing their abnormal and uncontrolled production in the bone marrow.
49.
The Lifespan of White Blood Cells is _?
Correct Answer: A. 13-20 days
One-liner
The lifespan of white blood cells (WBCs) is 13-20 days.
50.
RBCs in mammals are _?
Correct Answer: B. Biconcave and enucleated
One-liner
RBCs in mammals are biconcave and enucleated (lack a nucleus).

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Blood Cells MCQs with Answers

Blood Cells MCQs (41–50)

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