Biological Classification Question 141
141. Lichens indicate $SO_2$ pollution because they
(a) show association between algae and fungi
(b) grow faster than others
(c) are sensitive to $SO_2$
(d) flourish in $SO_2$ rich environment
Show Answer
Answer : c
Hints & Solutions
(c) Lichens typically grow in harsh environments in nature. Most lichens, especially epiphytic fruticose species and those containing cyanobacteria, are sensitive to manufactured pollutants. Hence, they have been widely used as pollution indicator organisms.
