Question

The haemolymph (blood) of cockroach ___________________.

• A. Is composed of colourless plasma and numerous types of haemocytes
• B. Is homologous to the blood of vertebrates
• C. Both (a) and (b)
• D. Lacks plasma

Answer 1

The correct option is A Is composed of colourless plasma and numerous types of haemocytes

Cockroaches, like other insects have an open circulatory system and their blood is also known as haemolymph. It flows freely inside the body, touching all the internal organs and tissues. About $90\%$ of this blood is watery fluid and the remaining $10\%$ is made up of hemocytes. Therefore the haemolymph of cockroach is composed of colourless plasma and numerous types of haemocytes.