We are pleased to present this comprehensive textbook, "Biodiversity of Chordates" designed specifically for B.Sc. First Year students. This book is designed in accordance with the National Education Policy-2020 and aligns with the revised syllabus of Swami Ramanand Teerth Marathawada University, Nanded.

Understanding the challenges faced by students in finding accessible and accurate study materials, we have ensured that the content is both inclusive and engaging. The book has been crafted to simplify complex concepts, integrating clear explanations with visual representations to foster an enjoyable learning experience. This work reflects the combined effort, dedication, and creativity of the authors and publishers. The textbook is enriched with numerous examples and real-life illustrations to connect theoretical concepts. It aims to bridge the gap between foundational knowledge and advanced learning, highlighting the relevance and flexibility of the subject.

INDEX

Unit - 1

1.1 : Introduction of Chordates - 
Salient features and classification of chordates up to class level. Origin and Ancestry of Chordata

1.2 : Protochordata : 
Urochordata - General features and Phylogeny of Urochordata
Cephalochordata - General features and Phylogeny of Cephalochordata.

1.3 : Agnatha : General characters and classification of Agnatha with suitable examples.

1.4 : Cyclostomata: General characters with suitable examples.

Unit - 2

2.1 : Pisces : General characters and classification up to order level with suitable examples;

2.2 : Scoliodon (Dogfish) : External morphology, Digestive system, Respiratory system,

2.3 : Circulatory System, Nervous system, Urinogenital system, Economic importance of Fishes.

2.4 : Amphibia : General characters and classification up to order level with suitable examples; Parental care in Amphibians; Hi-bernation and aestivation in Frog.

UNIT - 3

3.1 : Reptiles : General characters and classification up to order level with suitable examples;

3.2 : Poisonous and non-poisonous snakes; Biting mechanism in snakes; Importance of snake Venom.

3.3 Aves : General characters and classification up to order level with suitable examples;

3.4 Flight adaptations in birds; Migration in birds.

UNIT- 4

4.1 : Mammals : General characters and classification up to order level with suitable examples.

4.2 : Rat : External characters, Digestive system.

4.3 : Respiratory system, Circulatory system.

4.4 : Nervous system : Brain and spinal cord, Eye and Ear.