This work contains classic experiments with clear instructions, simplified flow diagrams and easy-to-read tables, charts and diagrams. For this new edition, the manual has been revised for greater course flexibility. It features addtional explanations of each laboratory task, plus new experiments on: chromosomal basis of heredity; biological co-ordination; nervous system physiology; and analysis of surface water pollution by micro-organisms. It also features revised experiments on: cell reproduction and phyla platyhelminthes, nermatoda and rotifera.