List three .important 'distinguishing :characters of arthropods.

What are arthropods?

Jayan is trying to group few organisms into two-categories such as prokaryotes and eukaryotes. Help him by giving distinguishable characters of these groups.

List the important sources of sulphur

Different types of fungi are given. a) Clasiffy them into their specific classes. Groups Phycomycetes Ascomycetes Basidlomycetes Deuteromycetes b) Write the distinguishing characters of ascomycetes and basidiomycetes.

List any three important characteristics of population and explain them.