Amoeba, Euglena, Monocystis, Plasmodium, Paramecium, Sycon, Hydra,Obelia, Fasciola, Taenia, Ascaris, Nereis, Pheretima, leech, Palaemon (prawn), Scorpion , cockroach unio, pila Balanoglossus, Ascidian, Amphioxus
4. Comparative anatomy of vertebrates : - Integument, respiratory system, heart and circulatory system , urinogenital system, excretory system, Girdles.
5. Physiology - Chemical composition of protoplasm; enzymes and coenzymes, collids and hydrogen ion-concentratioin ; Elementary physiology of digestion excretion, physiology of respiration
6. Embryology - Gametogenesis, fertilization, parthenogenesis, neoteny, metamorphosis, embryology of Branchiostoma, frog and chick. Foetal membranes in chick Placenta in Mammals.
7. Evolution - Origin of life, Principles nd evidences of evolution, mutation and isolation.
8. Pollution.