closterium sp. charophyta algae under microscopic view x40, green algae, dark background

alga algae aquaculture aquatic biological biology botanical botany cell chloroplast chloroplasts closteriaceae closterium conjugate desmid desmidiales desmids differential experiment flora freshwater green interference laboratory life live macro micro microbiology microorganism microorganisms microscope microscopic nature nucleus photosynthesis phytoplankton plankton pond protozoa river single singlecelled staurastrum unicellular zoology