algae under microscopic view x40, closterium, charophyta, green algae, pattern background

alga algae algal aquatic background biological biology botanical botany cell celled charophyta closteriaceae closterium contrast desmid desmids dic differential flora freshwater green interference life light macro many micro microbiological microbiology micrograph microorganism microorganisms microscope microscopic multiple nature nucleus pattern phytoplankton plant pond rendering science single singlecell singlecelled unicellular view wildlife x40