1. Pneumatophores are essential for 41

2. Use the following information to answer Questions 54 and 55. In an experiment, a red-flowered plant was crossed with another red-flowered plant and the following results were obtained: 448 red flowers and 154 white flowers in the F1 generation. Which of the following represents the genotypes of the parents if R is for red gene and r for white gene? 54

3. Which of the following will have the least effect on the rate of change of the numbers in a population? 42

4. The organic molecule (s) present in the nucleus is/are 53

5. A bacterial cell differs from eukaryotic cell by having no 4