Biology Past Questions and Answers

who formulated the theory of natural selection in evolution?

The wing of a bat and that of a bird, the flippers of a whale and the fins of s fish are example of

In an individual who is heterozygous for a particular character, the hereditary factor that is always expressed is described as

Which of the following statements best explains the meaning of homologous chromosomes?

(a)(i) Explain briefly the cell theory.
(ii) Name two scientists who contributed to the development of the cell theory.
(b) Make a large labelled diagram of a typical plant cell.
(c) List three ways in which a typical plant cell differs from a typical animal cell.
(d) State one difference each between Hydra and the mammals with respect to:
(i) level of organisation; (ii) symmetry; (iii) number of body layers.