Previous Year Questions
2025
ZOOLOGY — HONOURS
Paper : DSCC-11
(Animal Physiology)
Full Marks : 75
Answer question nos. 1 and 2, and any four questions from the rest (question nos. 3-9).
Section - A
1. Answer any ten questions :
2 × 10
(a) What do you mean by muscular fatigue?
(b) Write two effects of carbon monoxide poisoning.
(c) Distinguish between chemical and electrical synapse.
(d) Mention one source and function of Gastrin.
(e) Define catadromous fish with example.
(f) What are the advantages of ureotelism?
(g) Define Cardiac output.
(h) Name any two clotting factors.
(i) Which antigen is present on Rh-positive red blood cells?
(j) What is erythroblastosis foetalis?
(k) Define hibernation. Give an example.
(l) Distinguish between R and T forms of haemoglobin.
(m) Distinguish between chyme and chyle.
(n) Define Platelet Plug.
(o) State the role of ADH in urine formation.
Section - B
2. Write short notes on (any three) :
5 × 3
(a) Juxta Glomerular apparatus
(b) Urea cycle
(c) Synaptic transmission in a chemical synapse
(d) Cardiac Cycle
(e) Oxygen Dissociation curve.
Section - C
Answer any four questions.
3. (a) Mention the ovarian follicular phase of Menstrual cycle.
(b) Explain the role of pituitary hormones in regulating the menstrual cycle.
(c) Write a short note on vaginal changes during the estrous cycle. 4+2+4
(b) Explain the role of pituitary hormones in regulating the menstrual cycle.
(c) Write a short note on vaginal changes during the estrous cycle. 4+2+4
4. (a) Mention the mechanism of urine concentration by counter current mechanism.
(b) Describe the process of osmoregulation in marine elasmobranch. 6+4
(b) Describe the process of osmoregulation in marine elasmobranch. 6+4
5. (a) Describe the process of excitation-contraction-coupling in muscle contraction with properly labelled diagrams.
(b) What are the roles of calcium ions and ATP in muscle contraction? 6+4
(b) What are the roles of calcium ions and ATP in muscle contraction? 6+4
6. (a) Write carbon dioxide transportation in blood from tissue to lung with special reference to chloride shift.
(b) Write a short note on process of RAAS involved in sodium and water balance. 5+5
(b) Write a short note on process of RAAS involved in sodium and water balance. 5+5
7. (a) Illustrate the mechanism of chemical digestion of lipids in Human digestive system.
(b) Explain mechanical digestion in the mouth and stomach.
(c) Write a short note on absorption of amino acids. 4+4+2
(b) Explain mechanical digestion in the mouth and stomach.
(c) Write a short note on absorption of amino acids. 4+4+2
8. (a) Write a short note on the conducting system of the human heart with diagram.
(b) Define vital capacity and mention its normal value. (4+2)+4
(b) Define vital capacity and mention its normal value. (4+2)+4
9. (a) Write a short note on thermoregulation in polar bear.
(b) Describe the ionic basis of depolarization during an action potential.
(c) Write a short note on saltatory conduction. 4+4+2
(b) Describe the ionic basis of depolarization during an action potential.
(c) Write a short note on saltatory conduction. 4+4+2
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