Answer the following problems.
problem1) Describe how living organisms have been classified in different ways at different times describeing their limitations and implications.
problem2)Discuss the origin and evolution of animals.
problem3) What are coral reefs? Discuss their types and formation.
problem4) Describe the different types of mouthparts found in insects with the help of well labeled diagrams.
problem5) Describe the torsion and asymmetry in gastropods.
problem6) describe the mode of locomotion in Echinodermata with the help of suitable diagram.
problem7) Describe the different types of respiratory organs found in annelids.
problem8) Describe insects of agriculture importance with the type of losses caused by them.