What's the difference between longitudinal cell and circular cell? please help :'(

what's the difference between longitudinal cell and circular cell? please help :'( I tried at Yahoo! Answers but no one replied :( I need the answers now, it's my homework and due is tomorrow. Please help meee :((

It would help if you explain what kind of cells you're asking about. There are cells in spread sheet programs, telephone distribution, biology, jails and many other things.