Question

Ronald Ross discovered -----
a. Erythrocyte cycle of plasmodium
b. Oocysts on the stomach of female anopheles
c. Transmission of malaria by female anopheles
d. Both B and C.

Answer 1

Hint: Sir Ronald Ross is British scientist born in India, where he did a lot of research regarding malarial parasites and found that female anopheles mosquito is responsible for the transmission of malaria and he won a Nobel prize for the same.

Complete answer:
Previously it was thought that malaria is caused by some contaminated air or water, hence it is named as malaria which means bad air, after that lot of research done by various scientists regarding this and finally discovered that female anopheles mosquito transmits the parasite responsible for causing malaria.
> Malaria is caused by the parasite called plasmodium, which is carried by the different species of the mosquito anopheles.
> Among all the diseases caused by the malaria falciparum is little deadly, and malaria is usually treated by chloroquine, but this plasmodium falciparum is resistant to this drug.
Where as symptoms of malaria is usually includes shivering with high fever which occurs periodically
> Plasmodium life cycle in the female anopheles mosquito was discovered by Ronald Ross.
> And oocysts were found in the female anopheles mosquito.
> For the above discovery Ronald Ross was awarded with the Nobel prize.
> Because of the Ronald ross, there is discovery of disease regarding malaria and about its transmission
> Ronald Ross did great work regarding the disease malaria which laid the foundation for combating the disease.

Note: The sexual cycle of the malarial parasite in the blood was discovered by William maccallum, whereas transmission of malarial parasite and oocyst in the gut of female anopheles mosquito was discovered by Ronald ross.