DE 18

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

M.Sc. DEGREE EXAMINATION – ZOOLOGY

FIRST SEMESTER – APRIL 2008

ZO 1807 – PHYLOGENY OF INVERTEBRATA AND CHORDATA

 

 

 

Date : 28-04-08                  Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A                                          Answer ALL                                                 (10 x 2 = 20 Marks)

1. Give binomials of cat and camel
2. Mention any four economically important reptiles.
3. Write the dental formulae of rabbit and elephant
4. Define Sericulture and Palaeontological question mark
5. Write short notes on Cephalaspis
6. Explain cephalization
7. Write down any four important characteristics of the Phylum Phoronida
8. Give four parasitic adaptations of Taenia and Mosquito
9. Enumerate any four important characters of Hemichordates.
10. Explain the following ductus caroticus and ductus cuiveri

PART –  B                              Answer any FOUR                                                 (4 x 10 = 40 marks)

1. Write notes on the Larval forms of Echinoderms
2. Define adaptive radiation and Give an account of the Adaptive radiation in Marsupials.
3. What are Pathogens? Explain in detail the Pathogen Entamoeba.
4. What are pearl oysters and give an account on pearl culture.
5. Explain metamerism and add a note on Metamerism in various groups of animals.
6. Write notes on the corals and coral reefs.

 

PART – C                               Answer any TWO                                       (2 x 20 = 40 marks)

1. Write an essay on the origin, evolution and classification of Ostracoderms
2. Compare and bring out the evolutionary significance of the respiratory systems of the major groups of invertebrates and chordates.
3. Explain in detail the origin, ancestry and evolution of chordates with reference to Geological time scale.
4. Explain in detail the Rotifers and bring out their systematic position.

 

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

GA 16

M.Sc. DEGREE EXAMINATION – ZOOLOGY

FIRST SEMESTER – November 2008

    ZO 1807 – PHYLOGENY OF INVERTEBRATA AND CHORDATA

 

 

 

Date : 04-11-08                 Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

Section-A

 

Answer All the questions                                                         (10 x 2=20 Marks)

1. Differentiate enterocoelic coelom from schizocoelic coelom.
2. Give the dental formulae of rat, dog, squirrel and man.
3. Comment on hydatid cyst.
4. Define metamerism and cephalisation.
5. Palaeospondylus is a paleontological question mark. Substantiate
6. Planaria is immortal under the edge of the knife. Substantiate.
7. Define the law of adaptive radiation.
8. Write a short note on the structure and function of synsacrum.
9. What is shell lac?
10. Limulus is a living fossil. Justify.

 

Section-B

Answer any FOUR                                                                         (4 x 10=40 Marks)

11. Give an account of echinoderm larvae.
12. Explain the structure and affinities of Pogonophora..
13. Write an account on prawn culture.
14. Write notes on migration in birds?
15. Relate the structure and function of heart in vertebrates.
16. Explain social life in termites.

Section-C

Answer any TWO                                                                           (2 x 20=40 Marks)

17. Write an essay on coral reefs and their significance
18. Give an account of the economic importance of chordates.
19. Explain the structural and functional modifications, and pathogenecity of any four

helminth parasites.

20. (a) What are ostracoderms. (3)

(b) Explain in detail the origin, classification and evolution of  Gnathostomata        (17)

 

 

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