How much do we need to know about plant physiology? I read the plant section in AP Bio book and its soooo damn difficult to remember every little detail. Whereas KBB was much more clear and less stuff to memorize. I guess they only took the important stuff and left the rest behind. For example do we need to know (zone of elongation, zone of maturation, capillary action, casparian strips, cohesion, apoplast, sumplast, endodermis, etc...) the list can go on! Please let me know if KBB is enough? Thanks