Question

What is a bioindicator? What are some examples of bioindicators?

Answer 1

Hint: Scientists use several organisms to analyse the degree of health of ecosystems. Such organisms occur naturally in the environment. They are one to be highly sensitive to environmental changes that imparts them a kind of alarming duty.

Complete answer:
Bioindicators are a kind of living organisms that help in analysing the quality of ecosystems. These organisms are generally buses to predict the level and effect of pollution on any ecosystem. Thus, are of great use.
They have designed by nature in such a manner that even a minute change in environment or introduction of pollutants can alter their behaviour or morphophysiology, that is, the structure of the organism or even lead to their death. Scientists collect information from lifestyle or physiology of these organisms by using their population, functioning of various body systems and death rate,etc. as input data.
There are many examples of such bioindicators out of which most common are worms. Worms get their nervous system functioning altered in case of environment change due to introduction of pollutants in soil. As they are inhabitants of soil so they are commonly found in their. Therefore, it is by scientists to analyse the health and quality of soil.
Another example is lichen. These are a kind of plants that dwell in air for their nutritional supply. So, any degradation in the quality of air around them by using their population as an input data. They live on rock or tree surfaces.

Note:
Bioindicators are natural and living organisms. They work as an early alarm for an ecosystem. Almost every ecosystem has some bioindicators that alarm about the upcoming environmental dangers. Therefore, these indications must not be ignored and these organisms should be protected.