Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls ...

Members of the Closterium peracerosum-strigosum-littorale (C. psl.) complex, a unicellular Zygnematophycean alga, exhibit a more than twofold heritable variation in genome size. A photograph of C.