Some symbiotic organisms are very good pollution indicators and are composed of a chlorophyll-us and a non- chlorophyll-us member. Describe them
Lichen is a symbiotic connection between algae and fungi that results in the formation of lichen. Algae chlorophyceae and fungi ascomycetes are the most common. Because they only grow in clean places, they operate as pollution indicators because they do not grow in polluted areas. For instance, consider the case of industrial melanism.