Zoology IFS Paper 2 UPSC 2022 with Solutions

Zoology Optional UPSC Forest Service Paper 2 2022

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SECTION A

Zoology 1(a) Explain the process of protein glycosylation in the lumen of rough endoplasmic reticulum. (IFS 2022, 8 Marks)

Zoology 1(b) How does lactose induce lac operon? Explain. (IFS 2022, 8 Marks)

Zoology 1(c) How are fossils formed? Describe the methods of dating of fossils. (IFS 2022, 8 Marks)

Zoology 1(d) With the help of a diagram, explain the constitution of a cosmid and mention its advantages over a plasmid in recombinant technology. (IFS 2022, 8 Marks)

Zoology 1(e) Describe the ultrastructure of nuclear pore and its functions. (IFS 2022, 8 Marks)

Zoology 2(a) Describe the constitution of a basic transcription unit and the process of initiation of transcription in prokaryotes. (IFS 2022, 15 Marks)

Zoology 2(b) With suitable example, explain the concept of multiple allelism. (IFS 2022, 15 Marks)

Zoology 2(c) Explain the data required for holotype labelling. Add a note on lectotype and neotype designation. (IFS 2022, 10 Marks)

Zoology 3(a) Describe the mechanism of evolution by natural selection. (IFS 2022, 15 Marks)

Zoology 3(b) What is meant by genetic dictionary? Explain the concept of degeneracy of genetic code. (IFS 2022, 15 Marks)

Zoology 3(c) Describe the steps of DNA synthesis occurring on lagging strand of DNA. (IFS 2022, 10 Marks)

Zoology 4(a) Explain Urey and Miller experiment. Give its contribution in the development of modern concept of origin of life. (IFS 2022, 15 Marks)

Zoology 4(b) With suitable examples, explain the role of Golgi cisternae in protein sorting mechanism. (IFS 2022, 15 Marks)

Zoology 4(c) What do you mean by a genetic clone? Describe a protocol of cloning of a recombinant DNA. (IFS 2022, 10 Marks)

SECTION B

Zoology 5(a) What do you mean by programmed cell death? Highlight its role in the metamorphosis of tadpole larva into adult frog. (IFS 2022, 8 Marks)

Zoology 5(b) Explain activation energy-based mechanism of enzyme catalysis. (IFS 2022, 8 Marks)

Zoology 5(c) Describe the role of haemoglobin in the transport of carbon dioxide in human body. (IFS 2022, 8 Marks)

Zoology 5(d) Illustrate the structure of a dipeptide and mention the characteristics of the peptide bond. (IFS 2022, 8 Marks)

Zoology 5(e) How does internal ear control body balance? Explain. (IFS 2022, 8 Marks)

Zoology 6(a) Differentiate between simple and complex lipids. Highlight the cellular importance of phospholipids. (IFS 2022, 15 Marks)

Zoology 6(b) What is meant by fate map? Describe the designing of fate map of gastrula in frog. How does it differ from that in chick? (IFS 2022, 15 Marks)

Zoology 6(c) Describe the role of kidneys in acid-base regulation. (IFS 2022, 10 Marks)

Zoology 7(a) Explain the roles of helper and cytotoxic T-cells in immunity. (IFS 2022, 15 Marks)

Zoology 7(b) Describe the development of eye in mammals. (IFS 2022, 15 Marks)

Zoology 7(c) Comment on the source of energy during muscle contraction under normal and intensive exercise conditions. (IFS 2022, 10 Marks)

Zoology 8(a) Highlight the mechanism of nerve conduction across a synapse with respect to excitatory neurotransmitter. (IFS 2022, 15 Marks)

Zoology 8(b) (i) Explain ATP utilizing reactions of glycolytic pathway. (IFS 2022, 5 Marks)

Zoology 8(ii) Write NADH and FADH, producing reactions of Krebs cycle. (IFS 2022, 10 Marks)

Zoology 8(c) Describe in detail the hormonal regulation of oocyte maturation and ovulation in human females. (IFS 2022, 10 Marks)