Which statement best describes what plants are, phylogenetically speaking?
A. Plants are all organisms that can photosynthesize.
B. Plants are all photosynthetic eukaryotes.
C. Plants are photosynthetic eukaryotes in which the common photosynthetic ancestor captured a photosynthetic partner that was itself eukaryotic, e.g. a green or red alga.
D. Plants are photosynthetic eukaryotes in which the common photosynthetic ancestor captured a photosynthetic partner that was prokaryotic, i.e. a cyanobacterium.