Specific Defense

Q.

The chemical substances which act against antigens are called __________ .

1. Antibiotics

2. Antibodies

3. Pathogen

4. Hormones

Q. Fill in the blanks by selecting suitable terms given below : [4 MARKS]
(Carbohydrates, proteins, lymphocytes, erythrocytes, specific, antigen, white, blood, cells)
(i) Antibodies are .................
(ii) Antibodies are produced on exposure to ..................
(iii) Antibodies are produced by .......................
(iv) Antibodies act against a particular antigen. Thus, they are ...............

Q. Which of the following can be the reason(s) for leukocytosis?

1. Infection
2. Inflammation
3. Allergy
4. Leukemia

Q.

Choose the appropriate pair of WBCs based on the defence action they perform.

Name	Defence action
A. Monocytes	i. Produce chemicals for inflammatory response
B. Basophil	ii. Engulfs and destroys germs
C. Eosinophil	iii. Stimulate other WBCs

1. A-ii, B-iii, C-i
2. A-i, B-iii, C-ii
3. A-ii, B-i, C-iii
4. A-iii, B-ii, C-i

Q.

__ antibodies are used in the treatment of cancer.

Q.

[ Carbohydrates , Lymphocytes , Proteins , erythrocytes , specific antigen ]

1. Chemically antibodies are ______________.

2. Antibodies are produced on exposure to _________________.

3. Antibodies are produced by a type of specialised _________________.

4.Antibodies are _______________ which means that one kind of antibody acts against only one particular type of antigen.

Q.

our body can make only a limited variety of different antibodies. true or false?

Q. Name of the following:
The WBCs which produce antibodies.