volvox algae under microscope - 100x

100 100x alga algae aquaculture asexual aureus background biology botany carrying cell chloroplast colonial darkfield daughter division educational fauna flora freshwater grand green inside lab laboratory lesson life macro magnification micro microbiology microscope microscopic microscopical nature offsprings organism picture plankton pond protozoa reproduction school science spherical training under volvox water zygnematophyceae zygote