Loyola College B.Sc. Zoology Nov 2003 Chordata Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI– 600 034

B.Sc. DEGREE EXAMINATION  –     ZOOLOGY

SECOND SEMESTER  – NOVEMBER 2003

ZO 2500/ ZOO 502  CHORDATA

01.11.2003                                                                                       Max: 100 Marks

1.00 – 4.00

 

 part – a   

I        Answer ALL the following questions                               (10 ´ 2 = 20 Marks)

  1. Give the characteristic features of chordates.
  2. List four flightless birds.
  3. Comment on Narcine.
  4. Draw a neat labelled pectorlal girdle of varanus.
  5. What is  synsacrum?
  6. Give the adaptations of Draco volans.
  7. What is Hatchek’s pit?
  8. What are accessory respiratory organs?  Give an example.
  9. Comment on cycloid scale.
  10. Give the dental formula of rabbit and man.

 

PART – B

II       Answer any four of the following                               (4 ´ 10 = 40 Marks)

 

  1. What is retrogressive metamorphosis?  Explain with reference to Ascidia.
  2. Give an account of snake venom and biting mechanism.
  3. Explain the arterial system of shark.
  4. Give an account of male and female urinogenital system of rat.
  5. Briefly explain the different types jaw suspensions.
  6. Describe the venous system of Calotes.

 

PART – C

III      Answer any TWO of the following                                (2 ´ 20 = 40 Marks)

  1. Write an essay on migration of birds.
  2. Write an essay on parental care in fishes.
  3. Explain the organization and affinities of Amphioxus.
  4. Explain the different types of respiration in frog.

 

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