structure of spirogyra charophyte green algae with titles

algae anatomy background biology black cell celled charophyte chlorophyta chloroplast coloring colouring contour cytoplasm diagram drawing ectoplasm endoplasm english eukaryotic graphic illustration isolated line membrane micro microbiology microorganism nucleolus nucleus organelle organism page plant protist protista protozoa pyrenoid schema scheme single spirogyra structure title unicellular vector white