Question

5. An useful biological indicator of so,
pollution:
2.
1) Bryophytes
2) Algal bloom
3) Lichens
4) Pseudomonas​

Answer 1

Answer:

3. Lichen

Explanation:

A lichen is a composite organism that emerges from algae or cyanobacteria living among the filaments (hyphae) of the fungi in a mutually beneficial symbiotic relationship. The fungi benefit from the carbohydrates produced by the algae or cyanobacteria via photosynthesis.

Answer 2

Answer:

3. Lichens is the correct answer