📖 BSc Zoology Third Semester Notes & Study Material (DU)

General characteristics and outline classification.

General characteristics of Hemichordata, Urochordata and Cephalochordata; Study of Tornaria and Ascidian larval forms in protochordates.

Theories of Origin of chordates with detailed concept of Dipleurula and the Echinoderm theory.

General characteristics and classification of cyclostomes up to Class.

General characteristics of Chondrichthyes and Osteichthyes; Classification up to order; Osmoregulation; Swim bladder in fishes

General characteristics and classification up to order; Origin of Tetrapods (Evolution of terrestrial ectotherms); Parental care in Amphibians.

General characteristics and classification up to order; Affinities and evolutionary significance of Sphenodon; Poison apparatus and biting mechanism in snakes.

General characteristics and classification up to order; Flight adaptations; Migration in birds.

General characteristics and classification up to order; Adaptive radiation with reference to locomotory appendages of mammalia.

Zoogeographical realms, Plate tectonics and Continental drift theory.

Most important questions and PYQs included of Chordates semester 3 DU

All the PYQs of Introduction Of Chordates semester 3 DU

Glycolysis, Citric acid cycle, Phosphate pentose pathway, Gluconeogenesis, Glycogenolysis and Glycogenesis.

β-oxidation and omega-oxidation of saturated fatty acids with even number of carbon atoms; Biosynthesis of palmitic acid; Ketogenesis.

Catabolism of amino acids: Transamination, Deamination, Urea cycle.

Redox systems; review of mitochondrial respiratory chain: electron carriers, sites of ATP production, Oxidative phosphorylation; Chemiosmotic hypothesis, mitochondrial shuttle system.

Inter-connection of glucose-6-phosphate, pyruvate and acetyl-CoA; fates of amino acids, fatty acids and glucose in liver cells; cascade of metabolic events in fasting and starvation.

DU PYQs for Biochemistry exams.

Most important questions and PYQs included for Biochemistry semester 3 DU

Overview of gastrointestinal tract and its associated glands; digestion; Absorption of carbohydrates, lipids, proteins; Hormonal control of secretion of enzymes in gastrointestinal tract.

Structure and functions of haemoglobin; Blood clotting system, Fibrinolytic system.

Structure of heart; Coronary circulation; Origin and conduction of cardiac impulses; Cardiac cycle; Cardiac output and its regulation; nervous and chemical regulation of heart rate.

Overview of respiratory system; Mechanism of respiration, Respiratory volumes and capacities; Transport of oxygen and carbon dioxide in blood; Dissociation curves and the factors influencing it; regulation of respiration.

Structure of kidney and its functional unit; Mechanism of urine formation; Regulation of water balance; Regulation of acid-base balance.

Quick revision notes and Most important questions for Human Physiology semester 3 DU.

DU PYQs for Human Physiology semester 3 exams.