<Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2008) (Learn how and when to remove this template message) </Td> </Tr> <P> Species or communities that can act as a measure of environmental conditions are referred to as bioindicators or indicator species . Plants which indicate some specific conditions of environment are called indicator plants or phytoindicators . </P> <Ol> <Li> Fungi are used to monitor of oil pollution . Scolecobasidium, Mortierella, Humicola, and Verticillum are able to utilize waste oil . </Li> <Li> Bacteria like Pseudomonas, Clostridium, and Streptococcus are used in assessment (estimation) and prediction of changes in marine environment induced by human activities . Pseudomonas metabolizes oil and converts into harmless end product as CO and H O . </Li> </Ol> <Li> Fungi are used to monitor of oil pollution . Scolecobasidium, Mortierella, Humicola, and Verticillum are able to utilize waste oil . </Li>

Which group of plants can be used as indicators of so2 pollution of air