Muddiest point!

Hey guys! Heidi, here. I was wondering what gymnosperms are and what the stoma or stomata or whatever its called does and what they are. HELP!!

Muddy point!!! Unit 9: Attack of the weird plants @_@

My muddy point from this unit 9 was, how does a chlorophyll molecule absorb and reflect different wavelengths of light on the visible spectrum??

Someone help me!!

-Eunice Chang