Which component in tobacco makes it harmful for human consumption?
1). Morphine
2). Nicotine
3). Heroin
4). None of these
1. The "eyes" of potato tubers are
2. Blood pressure is measured with
3. Which is the effect of antigen in an ill person
4. They are probably the simplest and the smallest living organisms possessing cellular organisation.
6. Vaccination is available against all of the following disease except-
7. Digestion of starch in mouth takes place by
8. The function of nucleolus is the synthesis of
9. Question 12:Define external fertilization. Mention its disadvantages.