Doctor Master Success Text Book Zoology D                                                              Edition ( 2019 ) For Bs ( 4th years ) Semester IV ( 2nd year Paper V VI ) B.sc ( Associative Degree 4th year ) Paper D ( for Punjab university ) Properties Of this Book :   According to syllabus approved by the Higher Education Commission ( HEC ) Islamabad Applicable to all the Universities Of Pakistan. Animal Form and function A comparative perspective Subjective Objective Main Topics include :  Protection ,Support ,Movement Communication I: Nerves Communication II: Sense Communication III: The endocrine system and chemical messengers Circulation : Immunity and Gas Exchange Nutrition Digestion Temperature and body fluid regulation Reproduction and Development Descriptive Embryology