Question

How is black spot fungus used as a pollution indicator?

Answer 1

Black spot is an infectious fungul diseases that effect most types of roses though some species are more resistant than other to this particular disease .
chacteristics:
black spots resembles black splotches which then develop leaf yeĺlowing around the spots.e.t.c

Answer 2

Explanation: If there is no black spot fungus on a rose then there is Hugh amount of ( above the threshold value) SO2 in particular place at time. Use as biomonitoring. First Either plant or translocate the well developed rose plant in area where u want to predict the SO2. Mark the temperature and moisture. you know that Roses favor environment with a warm and wet climate which is favorable for growth of fungus. Then culture blackspot fungus on the leaves of that roses. Sulphur dioxide is responsible for global cooling, have cool effect. Thus if No blackspot fungus then lots of Sulphur dioxide in atmosphere.