Question
Biology Question on human health and disease
Sand flies play significant role in spreading Kala-azar because they
A
Suck blood only from the patients suffering from kala-azar
B
Convert amastigote into promastigote
C
Engulf amastigote at the time of blood sucking from the infected persons
D
Inject promastigote into the body of non-infected persons at the time of blood sucking
Answer
Inject promastigote into the body of non-infected persons at the time of blood sucking
Explanation
Solution
Sand fly takes a blood meal and injec s m crophages infected with amastigotes ? Amastigotes transform into promastigote stage in midgut ? Divide in midgut and migrate to proboscis ? Amastigotes again get transferred into the skin of host during taking blood as meal.