Question1) Answer all the questions:
i) Write important features of Balanoglossus.
ii) With the help of appropriate diagram explain the external features of etromyzon.
iii) Explain the lateral line system in scoliodon.
iv) Briefly explain Neoteny in Urodelo.
v) Write brief note on Egg–laying mammals.
Question2) Write an essay on modifications of aortic arches in vestebrates.
Question3) Write down brief classification of mammals stating important characters and examples of each order.
Question4) Explain the vertebral column of varanus.