Banaras Hindu University (BHU) 2008 B.Sc Zoology (hons)part 3 - exam paper

comparative anatomy of chordates

time three hours full marks 75

ans five ques. including ques. one which is compulsory


1_(a) differentiate ranging from the following[marks 4*2]


(a) larynx and syrinx

(b) trachea and bronchi

(c) amphibian and mammalian skin

(d)horn and hoof

(B) =define the following_[marks3*1]

(a) nissl bodies

(b) odontoid process

(c) hemibranch

(C)_ name the subsequent.[marks 2*0.5]

(a) structure formed by fusion of posterior thoracic lumber sacral and proximal caudal vertebrae in birds

(b)reptilian skull having 2 opening in temporal region.

(D)_ write 2-3sentences to discuss the subsequent [marks2*1.5]

(a) Synapsid skull

(b) Carnassial teeth

2_write briefly on the subsequent [marks 5*3]

(a) dental formula

(b)chemoreceptors

(c) kinds of kidney tubules

(d) cutaneous respiration

(e)jaw suspension

3_ provide an illustrated account of evolution aortic arches. [marks15]

4_ provide an comparative account of pelvic girdle of reptile birds and mammals [marks15]

5 _ provide an illustrated account of eye in mammals.[marks 15]

6_ provide an illustrated account of stomach and its modification in ruminating mammals [marks 15]

7_ write notes on subsequent [marks 3*5]

(a) hair and feather

(b)evolution of cerebral hemispheres

(c) air sacs in birds.

Earning:   Approval pending.