Akey difference between green algae and land-based plants is that a. land-based plants don't have vascular tissue and must absorb nutrients directly from the environment. b. green algae don't have chloroplasts and absorb their food rather that perform photosynthesis. c. green algae don't have vascular tissue and must absorb nutrients directly from the environment. d. land-based plants breath in carbon dioxide while green algae consume oxygen.