zoology Arena

Q:-1 Explain the metamorphosis in Urochordata. Discuss its peculiar systematic position and affinity with invertebrates. (20) Q:-2 Give the affinity and characteristic features of Balanoglossus. (15) Q:-3 What is neurotransmitter? Explain is signalling mechanism. Describe various types of signalling molecules. (20) Q:-4 What is apoptosis? Describe the role of Bcl-2 family in apoptosis. How mitochondria is regulating process of apoptosis? (15+5) Q:-5 Discuss the implications of impaired signalling pathways. How biotechnology can play a role in it? Describe any one common congenital disorder due to impaired functioning of Signalling pathway. (20)

DAF for mains 2018 has been out click here to Go For instructions and general information                                click here

Q:-1 Describe the general characters of Phylum Echinodermata and classify the phylum upto subclasses. (20) Q:-2 What is repressor? Explain the trp operon and compare it with lac operon. (20) Q:-3 What is chromatin modification? How it is mediated? Discuss its role in gene regulation. (15) Q:-4 Describe the various larval forms in phylum Echinodermata. Explain their significance also. (20) Q:-5 What is water vascular system? Briefly explain the mechanism of respiration in Echinodermata. (15)

Q:-1Discuss the general features and life history of Pila with suitable diagrams. (20) Q:-2 Explain the process of torsion and detorsion in Gastropods. Discuss its significance and implications on physiology. (15) Q:-3 Compare the life history of Sepia and Lamellidens. (20) Q:-4 With diagrams explain the process of whole animal cloning. Describe various methods of making hybrid organisms. (15) Q:-5 What is transgenic organism? Discuss its significance in modern day society. (15)

Q:-1What is restriction enzymes? Discuss its various types and explain its nomenclature by taking suitable examples. (15) Q:-2 Give the general characteristics of phylum Mollusca and classify the phylum upto sub classes. (20) Q:-3 Comment on feeding habit of Mollusca. How it is different from Feeding habit of Echinodermata. (20) Q:-4 What is genetic library? Compare between cDNA and DNA library. (10) Q:-5 Explain the process of making the recombinant DNA. Describe the various types of DNA vectors and explain which one is better and why? (15) Q:-6 Explain the respiration process in classes of Mollusca with suitable diagrams. (15)

Week 2 Instructions:- There are Eight questions divided in Two sections. All questions are compulsory. Adhere to world limit wherever specified. The number of marks carried by a question is indicated against it. Paper - I Q:-1 Write notes on the following in about 150 words each: (10X5 = 50) 1) Secondary structure of DNA 2) Rhodesian man 3) Lower palaeolithic Culture 4) Chromosome walking 5) Javanicus Q:-2 Discuss the locomotive behaviour of prehistoric human primates and state how does it help in understanding the structural and functional correlations of their forelimb structure. 20 Q:-3 Comment on mendelian principles and their applications in genetic analysis. (15) Q:-4 Mutation is the hidden force behind evolution, justify the statement with suitable examples and discuss about sources of mutation. (20)                                Paper - II Q:-1 Write notes on the follow...