a student encounters an organism that they do not recognize. it could be a charophycean alga, a fern, a liverwort, a pine tree, an apple tree, or a maple tree. which of the structures below would allow for the most certain identification because it is present (not absent) in the fewest of these groups even if it is not unique to that group? justify your choice in 1-2 sentences. a vascular system alternation of generations a fruit a seed cuticle covered sporophyte