Biology i need some help with these two question?

Question

Why are there several types of glassware marked for measuring???? How migh glassware be used differently???

Answer 1

Different types of glassware are used for different purposes and for differing measures of accuracy.  A graduated cylinder gives you a good degree of accuracy but is not convenient for growing bacterial cultures or running reactions.  Beakers and Erhlenmeyer flasks have different shapes and different purposes in the scientific laboratory.  You can find pictures/examples of each by googling.