UPSC Zoology 2022

Write short notes on each of the following in about 150 words: (a) Structure of visual organs of cockroach. (10 marks) (b) What is meant by symmetry? Write about different types o…

(a) Explain asexual and sexual modes of reproduction in Paramecium. (20 marks) (b) Write general features of egg laying mammals, pouched mammals and aquatic mammals. (15 marks) (c…

(a) Explain habitat, habits, general features and life cycle of Wuchereria. (20 marks) (b) Describe different types of canal system found in porifera. Also mention their functions…

(a) Give an account of the origin as well as adaptive radiation of reptiles. (20 marks) (b) Describe general structure of a mammalian tooth. Also, classify mammalian teeth based o…

Write short notes on each of the following in about 150 words: (a) What are ecotones? Explain by giving examples. Also write a note on 'edge effect'. (10 marks) (b) Comment on 'me…

(a) Describe various types of social groupings in primates. Write a note on importance of social grouping. (20 marks) (b) (i) Differentiate between primary and secondary pollutant…

(a) What is meant by biodiversity? Explain various means of in situ conservation of biodiversity. (20 marks) (b) Describe two basic laws of learning. Explain habituation, trial an…

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

Write your answer in about 150 words for each of the following : 10×5=50 (a) Draw the structure of a microtubule and explain its role in chromosomal movements during cell division…

(a) What is rough endoplasmic reticulum (RER)? Describe in detail the various modifications of secretory proteins occurring in the lumen of RER. 20 (b) Define endomitosis. Describ…

(a) Sketch out a basic transcription unit and illustrate the RNA polymerase II associated assembly of a transcription initiation complex during expression of a eukaryotic gene. 20…

(a) What is fossil? Describe the origin and evolution of horse based on the fossil records. 20 (b) Define variation. Describe different types of variations and their role in evolu…

Write your answer in about 150 words for each of the following : 10×5=50 (a) Define immunity. Explain cell-mediated immune response in vertebrates with suitable diagram. (b) Descr…

(a) Draw the molecular structure of ATP synthase and diagrammatically explain the chemiosmotic concept of ATP synthesis. 20 (b) Illustrate the following : (i) A = T and G ≡ C base…

(a) What are intestinal glands? Describe the roles of intestinal juices in digestion and absorption of food. 20 (b) Define thermoregulation. How do homeotherms regulate body tempe…

(a) What is stem cell? Discuss the types of stem cells and their application in therapeutic uses in human. 20 (b) Explain the mechanism of spermatogenesis in mammals with suitable…