Give the examples of following: (Biological names)

i) Flying fish

ii) Flying reptile

iii) Lung fish iv) Aquatic mammal

Homcercal and Diphycercal tail

Discuss echolocation in bats.

What is the role of ductus arteriosus in bird’s circulatory system?

Draw a neat and labelled diagram of human eye.

How does the respiratory system of cartilaginous fishes differ from that of bony fishes?

Explain migration in fishes