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Biodiversity and Conservation
Question
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A location with luxuriant growth of lichens on the trees indicates that the

  • trees are very healthy

  • trees are heavily infested

  • the location is highly polluted

  • location is not polluted

Answer

D.

location is not polluted

The situation suggests that the site is no polluted as lichens are the bioindicators for air pollution. These are the living organisms that respond in an especially clear way to a change in the environment. Te lichens are useful indicators of especially SO2 pollution because they derive their water and essential nutrients mainly from the atmosphere rather than from the soil.

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Some More Questions From Biodiversity and Conservation Chapter

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :

Plants constitute what % of the total species of organisms (plants and animals) recorded so far ?

Which is the most species rich taxonomic group among animal ?

The most richest and the most threatened reservoirs of plants and animal life on earth are called :

The regions of earth where a large number of species are found, are called :

‘Chipko movement’ was started to conserve :

1. Sardar Sarovar Dam is built on river......... .

2. Number of wildlife sanctuaries in India are ......... .

3. The bird “Dodo” became extinct because of......... .

4. First Earth summit was held at.........and aimed at.........

Write “True” or “False” :

 The practice of controlling the establishment, growth, composition, health, and quality of forests to meet diverse needs and values

Coin one word for the following statements : Genetic variations between distinct populations of same species.