21. "Amitostigma " are dwarf terrestrial orchids, including some myco-heterotrophic species. 22. Heterotrophic organisms have to acquire and take in all the organic substances they need to survive.23. Picoeukaryotes can be either autotrophic and heterotrophic , and usually contain a minimal number of organelles. 24. Microrganisms present are heterotrophic and autotrophic. 25. Ferric iron ( ) is a widespread anaerobic terminal electron acceptor both for autotrophic and heterotrophic organisms. 26. The photosynthetic activity fuels processes and conversions in the total biofilm community, including the heterotrophic fraction. 27. Heterotrophic scavengers would have accompanied the photosynthesizers in their migration out of the " hydrothermal ghetto ".28. Heterotrophic microorganisms are important in oxidising carbon ( decomposition ) whereas autotrophic microorganisms are important in nitrification.29. The Acetobacteraceae comprise the acetic acid bacteria, which are heterotrophic and produce acetic acid during their respiration. 30. Most pathogenic bacteria can be viewed as heterotrophic parasites of humans or the other eukaryotic species they affect.
