This timely book, based on the CBCS syllabus, is a concise and relevant read for undergraduate students who aim to complete their semester?s study in a short span of time. The authors have used an impressive number of diagrams, tables and coloured photos to ease the readers? understanding of the core concepts. ABOUT THE AUTHORS: Dr. Mala Bose is an Associate Professor at Sarojini Naidu College for Women, Kolkata. She has teaching experience of more than 28 years in various branches of Zoology. She has completed projects under UGC and has published multiple academic papers in journals of high repute. She is the author of the book Parasitoses and Zoonoses and acts as a member of the editorial board of International Journal of Advancement in Life Sciences Research. She has also edited other books on Zoology and acts as a member of Board of Studies at various universities. Dr. Manidip Roy is an Ex-Associate Professor and Head of the Department of Zoology at Bankim Sardar College, South 24 Parganas. He hasteaching experienceof more than35 years and has published many academic papers in journals of high repute.He has also completed many research projects under UGC