A boy runs on seeing a stray dog. His breathing rate becomes very fast and blood pressure also increases. This was due to

1. Adrenaline
2. Insulin
3. Oxytocin
4. Testosterone

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

The synthesis phase in the cell cycle is called so for the synthesis of more

1. RNA
2. RNA and protein
3. DNA
4. Glucose

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

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