Test 01

 2 mark

| -0.25 mark |

 60 minutes

 Watch Video

00:00:00

Question 1:

Lichens are the best indicators of-

Question 2:

Which of the following organisms is most sensitive to air pollution and often used as a bioindicator?

Question 3:

Assertion: Lichens are absent in areas with high levels of air pollution. Reason: Lichens can tolerate high concentrations of sulfur dioxide.

Question 4:

Match the following organisms with the type of pollution they are best used to indicate: 1. Lichens 2. Fish 3. Earthworms 4. Algae A. Water Pollution B. Air Pollution C. Soil Pollution