Question

I have a bunch of questions..
1) Why do female anopheles feed on human blood, whereas male feed on plan juice?
2) Childhood immunization programme can be useful only if such health measures are available to all children... Why?
3) Differentiate between :
a. Antigens and antibodies
b. Antibiotics and antibodies

Answer 1

1 To lay mature eggs the female mosquito feed on blood. The male mosquitoes feed on plain juice as they just need food.
2 Because if it is not available for all children then only few of them get better immune system for fighting the disease which is not correct.