UPSC MAINS 2018 DAF

DAF for mains 2018 has been out
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Questions for 11 July 2018 Zoology

Q:-1 Compare between polyp and medusa. Why medusa has advancement over polyp? (15) Q:-2 Enlist all essential enzymes of DNA replication. Give their functions also. (10) Q:-3 Compare between prokaryotic and eukaryotic DNA replication process. Discuss replication at end points of chromosomes. (20) Q:-4 Discuss common features of obelia and Aurelia. Describe life cycle of Aurelia in detail with suitable diagrams. (20) Q:-5 What is alteration of generation and metagenesis. Comment on the phenomenon taking example from animal kingdom. (20)
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Question 30 August zoology

Q:-1. Define bioremediation. Discuss Its various ways. Briefly describe its significance.(15) Q:-2. Explain various factors influencing the population dynamics in a particular geographical area. (15) Q:-3. What is remote sensing how it is useful in controlling the various natural calamities? Describe its significance in conservation of nature and environment.(15) Q:-4. Enlist all the enzymes involved in translation. Describe the salient features of genetic code.(15)
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Questions for 14 July Zoology

Q:-1 Discuss the general characteristics of phylum Annelida. Classify the phylum upto Sub Classes.(20) Q:-2 Discuss the adaptations in Polychaets. Comment on the significance of their adaptations. (10) Q:-3 What is metamerism? Compare between pseudometamerism and metamerism. Comment on origin of metamerism. (20) Q:-4 Discuss the experiment of Mandel. How his experiment lays down the foundation of modern genetics. (15)
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Environment & Ecology JULY Week-1

Nipah virus The Nipah virus infection is a newly emerging  zoonosis , that is, a disease transmitted from animals to humans  as stated by the WHO . The virus belongs to a new genus termed Henipavirus (subfamily Paramyxovirinae). It was first reported in 1998 at  Kampung Sungai Nipah  village, Malaysia. So virus is named after this village. The natural host of the virus are  fruit bats (Pteropus giganteus)  belonging to the family Pteropodidae.  In 2004, humans were affected after eating the date palm contaminated by infected fruit bats. Pigs can also act as intermediate hosts. Natural host  are those animals in which pathogens reside naturally and not infecting them. Here they grows upto a certain stage of their life cycle. Intermediate hosts  are those in which pathogens reside and not causing harm to them and here they are in inactive state i.e not growing further. Primary host  are those in which pathogens...
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