zoology mains 2010 paper 1 & 2

Posted: November 14, 2010 in 2010_mains_papers

zoology mains 2010 paper 1

 

  1. write concise accounts of any 3 in about 200 words each. 20×3 = 60
  1. what are coral reefs? Enlist their geographical distribution , types & threats been faced by them.
  2. Draw well labeled diagrams only of male urinogenital system of labeo & frog.
  3. Enlist & draw diagrams of various larval forms of echinoderms & describe their evolutionary significance.
  4. Draw a well labeled diagram of the internal ear of rabbit. Comment upon the function of each part.

2 . answer any 2 of the following. 30×2 = 60

  1. enumerate various stages of sexual reproduction in sycon. Provide diagrammatic representation in support to your answer.
  2. What are the various hosts in which wuchereria bancrofti complete its life cycle? Describe various stages of its life cycle along with the diagram.
  3. Explain the structure & functions of respiratory organ of lamellidens branchiata.

 

3.a. what is retrogressive metamorphosis? Provide an illustrated account of reproduction in herdmania.  30

b. draw a well labeled diagram of respiratory system of scoliodon & explain the mechanism of respiration. 30

 

4.a. give an account on dentition in mammals. 30

b. enlist any 5 hard derivatives of vertebrate integumentary system. Give an account on various types of horns & antlers in mammals giving examples & diagrams. 30

 

section b

5 write in brief any 3 of following in 200 words each. 20×3 = 60

a. mention the various steps of sulphur biogeochemical cycle & draw a well labeled diagram . discuss its significance.

b. what is meant by sign-stimulus? Mention various types of sign-stimulus & discuss with examples .

c. what is lac culture? What are the uses of lac? Explain the methodology employed in lac culture. Discuss its present scenario in India.

d. what is EM? Mention different types of EM. Describe the structure & function of TEM. Mention its application in biology.

 

6.a. define sustainable development. Discuss the principle of sustainable development in the conservation of natural resources. 20

b. give a brief account of social organizations & determination of ‘castes’ in termites. 20

c. write the clinical manifestations, mode of infections , diagnose & treatment of tuberculosis. 20

 

7.a. what is student T test? Explain the application with example. 30

b. enlist 5 mammalian wildlife endangered species of India. Discuss the present scenario of conservation methods employed for gir lion. 30

 

8.a. what is imprinting? Discuss salient features & significance of this phenomenon in animals. 30

b. comment upon ‘sexual-conflicts’ in animals. 30

 

zoology mains 2010 paper 2

1. answer any 4 in 150 words . 15×4 =60

a.     distinguish between allopatric & sympatric speciation.

b.     Explain the functional difference between shine-dalgarno sequence & pribnow sequence.

c.      Comment on phenylketonuria as a genetic disorder.

d.     Distinguish between classical taxonomy & molecular taxonomy.

e.     Distinguish between Darwinism & neo-Darwinism.

 

2.  a. explain the structure of the basic level of organization of eukaryotic genetic material. Name 2 higher level organization. 20

b. which organelle is well developed in a secretory cell? Describe the structure to justify its function. 20

c. list the components of prokaryotic translation initiation complex. Explain how it is assembled to initiate translation. 20

 

3.a. RNA processing is a characteristic of eukaryotes only & not of prokaryotes. Explain this with reference to gene organization. 20

b. enunciate the mendelian laws of inheritance. Would Mendel’s laws hold good under all conditions? Justify your contention. 20

c. what are suicide bags of cells? Briefly describe their structure & function. 20

 

4.a. what are Darwin finches? Explain their significance in evolution. 20

b. critically comment on the justification of biodiversities studies. 20

c. write a short note on Australopithecus. 20

 

section b .

5. answer any 4 in 150 words . 15×4 =60

a. cyclic-AMP as a second messenger

b. types & functions of mammalian salivary glands

c. interaction that stabilize the secondary & territory structure of proteins.

d. excitatory & inhibitory neurotransmitters.

e. grey crescent

 

6.a. what are high energy compounds? Substantiate their role in biological systems. 20

b. classify L-amino acids on their structural basis. What are the biochemical importance of sulphur containing amino acids? 20

c. give a schematic representation of thyroxin biosynthesis. 20

 

7.a. describe briefly Mitchell’s chemi-osmotic hypothesis for ATP synthesis. 20

b. write briefly on control & regulation of renal excretion with reference to mammals. 20

c. write a note on female sexual cycles. 20

 

8.a. explain the changes undergone by sperm in th female reproductive tracts of mammals. 20

b. define teratogenesis & write a note on “thalidomide syndrome”. 20

c. write a note on homeotic genes in control of early development. 20

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Comments
  1. Dr.Biswojeet Nayak says:

    overall judgement of a individual’s knowledge and depth.exellent and conceptual questions.

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