Question

Microfilaria are found in blood between
A. 10 P.M. – 2 A.M.
B. 8 A.M. – 6 P.M.
C. 5 A.M. – 10 A.M.
D. Only during afternoon

Answer 1

Hint: Blood is a connective tissue. It is a body fluid that transports Oxygen, nutrients to the tissues and transports Carbon Dioxide, waste away from the tissues.

Complete Answer:
- Microfilaria is an early stage in the life cycle of certain parasitic nematodes i.e. the larval stage of parasitic nematodes that belong to Onchocercidae.
- The adults of these species live in the tissues or circulatory system of the vertebrates. They release microfilaria in the host blood stream.
- The microfilariae are taken up by the blood feeding vectors like mosquitoes. These vectors are called the intermediate hosts.
- In the intermediate hosts the microfilariae develop into the infective larvae that can be transmitted to the new vertebrate host. The genus of Microfilaria was proposed by Cobbold in 1882.
- The presence of microfilaria in the bloodstream of a host is called microfilaraemia. Microfilaria are found in blood between 10 P.M. – 2 A.M.

Microfilariae symptoms in human:
- Fever
- Inguinal
- Testicular pain
- Skin exfoliation
- Genital or limb swelling

Hence option A is the correct option for this question.

Note: The presence of microfilaria in the blood can be examined through the blood smear of the blood of the infected person. Usually microfilaria detecting test is conducted at night time because microfilariae are found in the blood between 10 P.M. – 2 A.M.