A best seller for more than three decades, this textbook encapsulates the recent research and developments in the field. It discusses several animal types from each major phylum keeping in view not only the anatomy and physiology of animals, but also the relationship of structure to functional requirements of the environment. Comprehensively written, this textbook would be extremely useful for students of Zoology.

Table of Contents:
• Introduction • General Principles of Systematics (Taxonomy) and Animal Classification • Protoplasm • Cell-Structure and Function • Cell Division • Reproduction • Gametogenesis • Fertilisation • Parthenogenesis • The Invertebrates • Phylum Protozoa • Euglena • Trypanosoma • Amoeba • Entamoeba • Elphidium (= Polystomella) • Monocystis • Eimeria • Plasmodium • Paramecium • Vorticella • Protozoa: Characters, Classification and Types • Protozoa in General • Phylum Porifera • Leucosolenia • Scypha (=Sycon) • Porifera: Characters, Classification and Types • Porifera in General • Metazoa • Phylum Coelenterata (Cnidaria) • Hydra • Obelia • Aurelia • Metridium (Sea Anemone) • Coelenterata: Characters, Classification and Types • Coelenterata in General • Phylum Ctenophora • Phylum Platyhelminthes • Dugesia (=Euplanaria) • Polystoma • Fasciola (A Liver Fluke) • Taenia (A Tapeworm) • Platyhelminthes: Characters, Classification and Types • Platyhelminthes in General • Phylum Aschelminthes • Ascaris (A Common Roundworm) • Ancylostoma (A Common Hookworm) • Wuchereria (A Filarial Worm) • Aschelminthes: Characters, Classification and Types • Nematodes in General • Helminth and Human Diseases • Phylum Entoprocta (Endoprocta) • Phylum Nemertinea • Phylum Acanthocephala • Phylum Rotifera • Phylum Ectoprocta (Bryozoa) • Phylum Brachiopoda • Phylum Phoronida • Phylum Mollusca • Pila (Apple Snail) • Lamellidens (Unio) (Freshwater Mussel) • Mollusca: Characters, Classification and Types • Mollusca in General • Phylum Annelida • Neanthes (=Nereis) (Clamworm) • Pheretima (Earthworm) • Hirudinaria (Indian Cattle Leech) • Annelida: Characters, Classification and Types • Annelida in General • Phylum Arthropoda • Palaemon (= Macrobrachium) Prawn) • Scorpion • Periplaneta (Cockroach) • Grasshopper or Locust • Culex and Anopheles: The Mosquitoes • Musca: The Housefly • Apis: The Honeybee • Bombyx: The Silkworm • Cimex: The Bedbug • Termites: The White Ants • Arthropoda: Characters, Classification and Types • Arthropoda in General • Peripatus • Phylum Echinodermata • Asterias: A Sea Star • Echinodermata: Classification, Characters and Types • Echinodermata in General • Phylum Hemichordata • Hemichordata: Characters, Classification and Types • Glossary • Selected References • Index