WBC

Q. what is the other name of red blood cells

Q. Why white blood cells are called soldiers of our body?

Q.

What is phagocytosis?

Q.

What is the erythrocyte sedimentation rate?

Q.

What is the role of spleen in frog's body?

1. Immune and digestive function

2. Production of RBC

3. Production of WBC

4. Immune system and blood filteration

Q.

Describe the immunoglobulin class IgD.

Q. What are WBC?

Q. Which of the following is the function of white blood cells?

1. Maintain homeostasis
2. Defend against infection
3. Produce haemoglobin
4. Transport oxygen

Q. What would happen if there were nowhere blood cells
how do white blood cells protect our body

Q.

Identify the incorrect statement

1. Plasma carries carbon dioxide and nutrients

2. White blood cells kill invading bacteria

3. Red Blood cells are responsible for fighting infection

4. Platelets help in the clotting of blood

Q. Excessive bleeding from an injury even after an hour of accident could be because of the _____.

1. absence of haemoglobin
2. excess of WBCs in the blood
3. insufficient platelets in the blood
4. combination of the oxygenated and deoxygenated blood

Q.

Are B-cells and T-cells White Blood Cells?

Q.

Fill in the blanks by choosing the most appropriate option. It is unfortunate that he died __ cancer.

1. of

2. by

3. from

4. with

Q. What is the main function of white blood corpuscle?

Q. Name the blood corpuscles by which the human body is protected from invading bacteria

Q. What is the function of Lymphocytes?

Q.

There is a decrease in ___ when a person has dengue.

1. RBC count

2. WBC count

3. platelet count

4. plasma

Q. Give the other name for white bloods cells.

Q. Which of the following is not a WBC?

1. Lymphocyte
2. Eosinophil
3. Immunoglobulin M
4. Leukocyte

Q. Which one is largest and smallest
(a) Eosinophil
(b)Basophil
(c)Neutrophil
(d)Monocyte
(e) T-lymphocyte

Q.

Cells of innate immunity are:

1. Macrophages
2. Neutrophils
3. Natural killer cells
4. Red Blood Cells

Q.

Identify the error(s) in the given statement:

Platelets destroy germs which enter the body.

Q. What is the function of yellow bone marrow ?? And where it is found??

Q.

What two things are cilia used for?

Q. The most apparent feature of an aged person, a healthy youth or a tender infant is

1. Texture of the skin
2. Length of the hair
3. Colour of the teeth
4. The eyesight

Q. Find the correct descending order of percentage proportion of leucocytes in human blood.

1. Neutrophils --> Basophils --> Lymphocytes Acidophils (Eosinophils) -->Monocytes
2. Monocytes --> Neutrophils --> Lymphocytes --> Acidophils-->Basophils
3. Neutrophils --> Lymphocytes Monocytes --> Acidophils -->Basophils
4. Lymphocytes Acidophils --> Basophils --> Neutrophils-->Monocytes

Q. Given below is a diagram of a smear of human blood. Study the same and answer the questions that follow:
a. Name the parts 1, 2, 3 and 4 indicated by guidelines.
b. Mention two structural differences between the parts labelled '1' and '2'.
c. What is the main function of the parts labelled 1, 2 and 3 respectively?
d. What is the life span of the part labelled '1'?
e. Name a soluble protein found in '4' which helps in the clotting of blood.

Q. Write three differences between RBC and WBC. [3 MARKS]

Q. Abnormal fall in total count of WBCs in the human blood is called:

1. Anaemia
2. Polycythemia
3. Leucopenia
4. Leukaemia

Q. Number of WBCs per mm${}^3$ of human blood is _______.

1. 8000
2. 7000
3. 6500
4. 6000