A small tablet of potassium permanganate is placed into a beaker filled with water. After some time the water colour changes into pink. Which of the following process is responsible for the above change?

1. Exosmosis
2. Diffusion
3. Osmosis
4. Endosmosis

Proximal denotes the portion of the tubule attached to

1. glomerular capsule
2. collecting duct
3. artery
4. nephron

In human beings, the female reproductive system does not consist of

1. uterus
2. ovary
3. urethra
4. Fallopian tube

Chief function of lymphocytes in mammals is

1. phagocytosis
2. coagulation
3. oxygen transport
4. None of the above