Read the following and answer any four questions from (i) to (v).

All living cells need nutrients, O₂ and other essential substances. Also, the waste and harmful substances need to be removed continuously for healthy functioning of cells. So, a well-developed transport system is mandatory for living organisms. Complex organisms have special fluids within their bodies to transport such materials. Blood is the most commonly used body fluid by most of the higher organisms. Lymph also helps in the transport of certain substances.

1. Which of the following does not exhibit phagocytic activity?
2. Monocytes.
3. Neutrophils.
4. Basophil.
5. Macrophage.

1. Amount of blood corpuscles in changed in dengue fever. One of the common symptoms observed in people infected with dengue fever is:
2. Significant decrease in RBC count.
3. Significant decrease in WBC count.
4. Significant decrease in platelets count.
5. Significant increase in platelets count.

III. Why are WBCs called soldiers of the body?

1. They are capable of squeezing out of blood capillaries.
2. They are manufactured in bone marrow.
3. They fight against disease causing germs.
4. They have granular cytoplasm with lobed nucleus.

1. Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
2. Erythrocytes.
3. Neutrophils.
4. Leucocytes.
5. Thrombocytes.

1. Which of the following is the correct feature of lymph?
2. It is similar to the plasma of blood but is colourless and contains less proteins.
3. It is similar to the WBCs of blood but is colourless and contain more proteins.
4. It is similar to the RB Cs of blood and red in colour.

It contains more fats.