Banaras Hindu University (BHU) 2007 B.Sc Zoology (hons)part 3 - Question Paper

B.Sc.(hons) part three exam 2007


comparative anatomy of chordates

ans part a and b which are compulsory and 3 ques. from part -c

part -a

1.(a)differentiate between:

1)Semiplumes and Filoplumes [4*2 marks]

2)papillary cone and papilla amphibiorum

3)holonephros and opisthonephros

4)primary sex cord and secondary sex cord

(b) describe the subsequent [marks 3*1]

1)Haversian system

2)tela choroidea

3)parabronchi

c)name of the subsequent [marks[2*0.5]

1)the cavity current in the mid brain of amniotes

2)ear ossicle , peculiar to amphibians

(D)state weather the subsequent statements are actual or false giving cause in2-3 sentences;[marks 2*2.5]

1) coracoids are dermal bones

2)hyperstriatum is current in amphibian brain

part -B

write briefly on the subsequent

(a)lung in fishes(b)renal portal system(c)ruminant stomach(d)sperm duct in fishes(e)general plan of neurocranium [5*3 marks]

part -c
3.describe the integumentary derivatives in birds [ marks15]

4.give an account of peculiarities of agnathan gills system and compare it with that of bony fishes [marks 7+8]

5.give an account of evolution of cerebellum in vertebrates [marks 15 ]

6.give an account of cochlea development in mammals [marks 15]

Earning:   Approval pending.