1.In male cockroaches, sperms are stored in which part of the reproductive system?
A. Vas deferens
B. Testes
C. Seminal vesicles
D. Mushroom glands
2.Cholesterol is :
1.monosaccharide
2.protein
3.sterol
4.wax
3.which microbes is involved in making of hepatitis- b vaccine?
a) yeast
b) fungus