Neutrophils are a type of Leucocyte (WBCs) that can take all types of stain (Acidic-Basic-Neutral). It is most abundant (60-70% of total WBCs) and most active type of WBCs i.e. they are the most actively phagocytic in nature.

Correct Option: D

Neutrophils are a type of Leucocyte (WBCs) that can take all types of stain (Acidic-Basic-Neutral). It is most abundant (60-70% of total WBCs) and most active type of WBCs i.e. they are the most actively phagocytic in nature.

Lymph differs from blood in that it contains less protein and no red blood cells. Lymph contains white blood cells.

Correct Option: A

Lymph differs from blood in that it contains less protein and no red blood cells. Lymph contains white blood cells.

The blood of cockroach do not contain RBCs as it is not infact the blood, but haemolymph which has some unpigmented free cells in plasma known as haemotocytes which have nothing to do with the transport of gases or respiration.

Correct Option: D

The blood of cockroach do not contain RBCs as it is not infact the blood, but haemolymph which has some unpigmented free cells in plasma known as haemotocytes which have nothing to do with the transport of gases or respiration.

Mineral found in red pigment of vertebrate blood is iron.

Correct Option: B

Mineral found in red pigment of vertebrate blood is iron.

Antigens are foreign proteins, which stimulate specific immune response (antibody) against itself when introduced into the body. They are present on the surface of cell wall.

Correct Option: B

Antigens are foreign proteins, which stimulate specific immune response (antibody) against itself when introduced into the body. They are present on the surface of cell wall.