If I can remember correctly, I believe the control is what id being tested...
A is the correct answer, eukaryotic cells have membrane-bound nucleus, prokaryotic cells do not.
Freshwater green algae
450 mya
Green algae
Chlorophyll a and b
Green algae
Starch
Green algae
Cellulose
Charophytes
Green algae
Coleochaete and chara