1. Answer the following in about 150 words each:

Differentiate between major and minor phyla. Describe the salient features of anyone minor phylum.

Some fishes can breathe air. Elaborate.

Explain the types of metamorphosis in insects and their hormonal regulation.

Give general features and examples of egg-laying mammals and pouched mammals.

Discuss the origin of Tetrapods.

Give an account of larval forms in Crustacea with examples and diagrams. Also write a note on the significance of larvae.

Give the structure of cnidoblast, the defensive organ in Cnidaria. Also, describe its mechanism of action.

What are Bilateria Explain the theories of origin of Bilateria.

Give an elaborate account of various flight adaptations in birds.

Explain various types of dentition in mammals.

Describe the roles of three eye layers in vision in humans.

Give an account of evolution of aortic arches in reptiles, birds and mammals.

Discuss respiration in Mollusca indicating suitable examples.

Explain primitive, degenerate and advanced characters of Branchiostoma. Comment on its systematic position.

5. Answer the following in about 150 words each:

Describe Principle, Procedure and Applications'.

What are Ecotones? Are wetlands ecotones? Justify.

Discuss Thermal Pollution and its preventive measures.

How is 'Composite Carp Culture' advantageous over 'Traditional Carp Culture'

Explain the role of chemical signals in alarm spreading.

Mention the advantages of social living. Describe different types of social hierarchies in primates.

Discuss the concept and importance of genetic counselling and gene therapy.

Write about phase contrast and fluorescence microscopy with notes on their principles and applications in Zoology.

What is meant by biostatistics Explain the regression and ANOVA in data analysis in Zoology. role of correlation.

Elaborate the term 'Ecosystem' and explain its structural components with examples. Comment on Trophic Dynamics concept.

Explain the principle, types and applications of ultracentrifuge.

Discuss environmental degradation with regards to inland water resources. Suggest measures to restore the water quality of our rivers, lakes and reservoirs.

What is meant by Biodiversity? Explain Protected Area Networking w.r.t. their establishment, monitoring and management.

Explain adaptations of animals inhabiting fast flowing waters.