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problem1) Answer all the problems:

i) Draw labelled diagrams only to show perching mechanism in birds.

ii) prepare down the difference between the scales of poisonous and nonpoisonous snakes with the help of suitable diagram.

iii) prepare down similarities and differences between lower Chordates and higher Chordates.

iv) Describe the affinities of Amphioxus. Add a note on its present systematic position.

v) prepare brief lnote on Ruminant Stomach.

problem2) Give the outline of evolutionary history of vertebrates.

problem3) describe the structure of gill and the mode of respiration in scoliodon.

problem4) describe the structural and anatomical features which adapt birds to aerial mode of life.

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  • Category:- Biology
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