UPSC Zoology 2024

Write short notes on the following in about 150 words each: (a) Concept and organization of Coelom (10 marks) (b) Metamorphosis in Insects (10 marks) (c) Thyroid gland and its fun…

(a) Explain the general features, life cycle and pathogenicity of Fasciola. (20 marks) (b) Define Autogamy. Explain the mechanism of autogamy in Paramecium. Also give its signific…

(a) Describe the different larval forms of Crustaceans with suitable diagrams. (20 marks) (b) What are coral reefs ? Describe the different theories of coral reef formation. (15 m…

(a) Give an illustrated account of integument and its derivatives in vertebrates with suitable diagrams. (20 marks) (b) What is Polymorphism ? Explain it with respect to life cycl…

Write short notes on the following in about 150 words each: (a) Food Web (10 marks) (b) Biological Rhythms (10 marks) (c) AIDS (10 marks) (d) Chromosome Painting (10 marks) (e) Re…

(a) What is ecological succession ? Explain the different types and theories of ecological succession. (20 marks) (b) Explain Aggressive and Territorial behaviour in animals, with…

(a) Mention the causative agent and means of spread of malaria. Also describe symptoms, diagnosis, treatment and preventive measures of malaria. (20 marks) (b) Explain the princip…

(a) Describe the various measures of central tendency of data with suitable examples and discuss their merits and demerits. (20 marks) (b) Define population. Explain the different…

Write on the following in about 150 words each: (a) Polytene chromosome (10 marks) (b) Difference between male heterogamety and female heterogamety with examples (10 marks) (c) Ty…

(a) Give an account of ultrastructure of rough and smooth endoplasmic reticulum. Also discuss the role of endoplasmic reticulum in cell secretion. (20 marks) (b) Distinguish betwe…

(a) What is sex-determination? Give an account of genic balance theory of sex-determination in Drosophila with examples from abnormal karyotypes. (20 marks) (b) What is DNA replic…

(a) Describe the stages of human evolution and mention the major hominid forms giving their time of origin. (20 marks) (b) What is Hardy-Weinberg law? How is gene frequency change…

Write on the following in about 150 words each: (a) Functions of immunoglobulins (10 marks) (b) ABO system of blood groups and its basis, and erythroblastosis foetalis (8+2=10 mar…

(a) Explain the structure of nephron and its role in urine formation. Add a note on hormonal regulation of urine formation. (15+5=20 marks) (b) Classify hormones and write down th…

(a) Describe the process of spermatogenesis. Add a note on the role of Golgi bodies in the formation of acrosome. (15+5=20 marks) (b) Why are vitamins also called coenzymes? Justi…

(a) Write about the role of liver and pancreas in digestion. Add a note on neural and hormonal regulation of their secretions. (15+5=20 marks) (b) Discuss the role of oxidative ph…