anabaena

blue green algae cyanobacteria akinete carbon fixation nostoc cyanophytes aquatic food chains prokaryotic cell algal toxins oxygen production anabaena anatomy structure diagram cyanobacterial variety vegetative cells bluegreen nutrient cycling dolichospermum freshwater heterocysts nature ecology wallpaper plants botany filament heterocyst microscope phase contrast microscopy acetylcholine growth garden azolla neurotoxin background bluegreens lush leaf abstract watter alga symbiotic filamentous nitrogen microbiology plankton chloroplast scientific cyanobacterium science prokaryotes water biology phytoplankton photosynthesis education plasma microorganism environment blooming medicine health disease art care