Q.1: Choose the correct option and write in your answer-book : A) If leaf-cells of a plant have 24 chromosomes then the - Q.2: What is biopiracy? - Q.3: Comment upon Bt cotton. - Q.4: What is the chromosomal formula of Turner syndrome ? - Q.5: Cyathium inflorescence is found in which plant? - Q.6: What is the unit of sound pollution ? - Q.7: Comment upon hot 'spots'. - Q.8: Describe the contribution of Darwin. - Q.9: Differentiate between the purine and pyrimidine bases. -