WBCs

Q.

Which is the main function of RBC?

1. To fight diseases in the body

2. To carry oxygen to different parts of the body

3. To increase levels of WBC

4. To arrest bleeding

Q.

White blood cells can change their shape.what is the advantage of this property of white blood cells?

Q. Kamal had a bacterial infection. He noticed that his body temperature raised. He didn't understand why that happened. Choose the correct sequence of the mechanism of fever to help Kamal.

(A) WBCs produce chemicals that raise body temperature.
(B) Pathogen reproduction rate declines.
(C) Pathogens produce toxins.
(D) Toxins trigger WBCs.

1. A $\to$ C $\to$ D $\to$ B
2. B $\to$ A $\to$ D $\to$ C
3. C $\to$ D $\to$ A $\to$ B
4. C $\to$ D $\to$ B $\to$ A

Q.

Which of the following protect our body?

1. White blood cells

2. Red blood cells

3. Viruses

4. Microbes

Q. Which blood cells protect humans from microbial diseases?

1. White blood cells
2. Red blood cells
3. Platelets
4. Plasma

Q. Which among the following characteristic belong to white blood cells (WBC)?

1. Large and colourless cells
2. Enucleated cells
3. Produced in red bone marrow
4. Number ranges from 50-60 lakh

Q.

Different types of WBCs(white blood cells) n der functions

Q. RBCs are ___________ in shape so that they could easily flow through the all types of blood vessels.

1. biconcave
2. long
3. spherical
4. irregular

Q. WBCs are also called ___

Q.

what are megakaryocytes and where it is located?

Q. Choose the correct statement from the following.

1. Platelets can bind to the pathogens and destroy them.
2. Red blood cells can bind to the pathogens and destroy them.
3. White blood cells can bind to the pathogens and destroy them.
4. (a) and (b) above.