Is it worth it ? Must i memorize all 47 processes?.

I understand all of them, and given the name, i know wich process group+knowledge area  it is in; but i don't know by memory which they are...

Should i memorize this chart for the exam?.

By the way i found it much more useful to study Rita's chart, and knowing the planning processes in proper order. A useful site to practice:

http://pmp.aamirafridi.com/_rpg/index-3.html