Question

Which of the following is used as an atmospheric pollution indicator?

• A. Lycopersicon
• B. Lichens
• C. Lycopodium
• D. Lepidoptera

Answer 1

The correct option is B Lichens

Lepidoptera:

Lepidoptera is an order of class insecta. It includes butterflies and moths.

Lichens:

Lichens are symbiotic association of fungus and algae.They are bioindicators of atmospheric pollution because of the following reasons:-

● High concentration of atmospheric nitrogen can kill the chlorophyll in the algae thus destroying the lichen.

● They are pH sensitive and thus if the rain is acidic they are killed.

● They are sensitive to the amount of sulphur dioxide in the atmosphere.

Lycopersicon:

Lycopersicon is a genus of family Solanaceae.

Lycopodium:

Lycopodium is a type of clubmoss.

Final answer:

b. Lichens