Structure and Function of Invertebrates

Paper Code: 
ZOL 123
Unit I: 

Basis of classification (brief account)-:

  • Symmetry, coelom, segmentation, embryogeny and level of organization


  • Flagellar and ciliary movement in protozoa
  • Hydrostatic movement in Coelenterate, Annelida and Echinodermata
Unit II: 

Nutrition and digestion

  • Filter feeding in Polychaeta, Mollusca and Echinodermata


  • Organs of respiration – gills, lungs and trachea
  • Respiratory pigments
  • Mechanism of respiration
Unit III: 


  • Organs of excretion: coelom, coelomoducts, nephridia and Malphigian tubules
  • Mechanism of excretion
  • Excretion and osmoregulation

Trends in Neural Evolution

  • Primitive nervous system -Coelenterata and Echinodermata
  • Advanced nervous system- Annelida, Arthropoda (Crustacean and Insecta)and Mollusca (Cephalopoda)


Unit IV: 

Invertebrate larvae

  • Larval forms of free living invertebrates
  • Larval forms of parasites
  • Significance of larval forms


Unit V: 

Minor Phyla (Ctenophora,Rhyncocoela,Entoprocta,Rotifera,Bryozoa,Phoronida)

  • Concept and significance
  • Organization and general characters
Essential Readings: 
  1. The Invertebrates; Hyman.L.H.; Mc Graw Hill Co New York
  2. Invertebrate structure and function. ; Barrington.E.J.W. ThomasNelson & Sons Ltd.London
  3. Invertebrate Zoology,III edition.; Barnes.R.D.
  4. The invertebrates. Vol.1. Protozoa through Ctenophora, Hyman, L.H. McGraw Hill Co., New York.,/li.
  5. Invertebrate structure and function. Barrington, E.J.W. Thomas Nelson and Sons Ltd. London.
  6. Evolution of Metazon life cycle, Jagerstain, G. Academic Press, New York & London.
  7. The Invertebrates. Vol.2. Hyman, L.H. McGraw Hill Co., New York.
  8. The Invertebrates. Vol.8. Hyman, L.H. McGraw Hill Co., New York. and London
  9. Invertebrate Zoology Barnes, RD. W.B.Saunders Co., Philadelphia
  10. A Biology of higher invertebrates, Russel-Hunter, WD. McMillan Co. Ltd., London
  11. The Invertebrates srnaller colomate groups, Vol.5. Hyman, L.H. McGraw Hill Co., New York.
  12. Animal Parasitism. Cad. C.P.Prentice Hall Inc., New Jersey.
  13. Student Text Book of Zoology. Vol.I.II and III. Sedgwick.A. Central Book Depot, Allahabad.
Academic Year: