WBCs

Q.

(i) Mention the two distinguishing features of eosinophils.

1. (ii) Define granulocytes and agranulocytes.

Q.

___ is the ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment.

Q.

Pus in the wound contains

1. Destroyed germs

2. Killed WBC

3. Salts

4. Damaged tissue cells

Q.

what are thrombocytes? what are leucocytes? What are erythrocytes?

Q. Why do female mosquito need highly nutritious food in the form of human blood?

Q.

Which of the following blood components do not work as defense subunits?

1. Neutrophils

2. Lymphocytes

3. Monocytes

4. Erythrocytes

Q.

How many types of blood groups are there in human beings? Give an example of inheritance of blood groups in human?

Q. White blood cells get squeezed out of the blood capillaries by ______ and engulf the bacteria and destroy them by the process of ________.

1. diapedesis, phagocytosis
2. phagocytosis, diapedesis

Q. why the peeled off epidermal layer is immediately kept in watch glass containing water

Q. Macrophages are capable of attacking and destroying cancer cells.

1. False
2. True

Q. Schistosoma is a parasite found in

1. Blood
2. Liver
3. Lungs
4. Intestine

Q.

Which of the following is an action of WBC on germs?

1. Bacteria die just by coming in contact with WBC.

2. Blocking the way of germs into the blood capillaries.

3. Secretion of enzyme that acts on germs.

4. Ingesting the germs.

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.

Which type of blood cells fight infections?

1. White blood cells

2. Red blood cells

3. Platelets

4. Plasma