Which of the following is the use of lichens in case of pollution?

Related Mcqs:

1. Lichens are well known combination of an alga and a fungus where fungus has:

   A. An epiphytic relationship with the alga
   B. A parasitic relationship with the alga
   C. A symbiotic relationship with the alga
   D. A saprophytic relationship with the alga

2. The lichens show a mutualistic relationship originating from:

   A. Obligate parasitism
   B. Facultative parasitism
   C. Halotism
   D. None of these

3. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

4. Which of the following does not cause pollution?

   A. CO2
   B. SO2
   C. H2
   D. CO

5. Most harmful heavy metals causing water pollution:

   A. Pb, Hg, Cr, Cd
   B. P,Mn,B,Mg
   C. N,K,Mo
   D. Zn,Mo,Mg,Ag

6. Maximum noise pollution in residential areas is due to:

   A. Traffic sirens
   B. Sirens and loud speakers
   C. Kitchen appliances, radio and TV
   D. Industries

7. The CFC pollution sources include:

   A. Jet air crafts only
   B. Fire extinguishers and jet air crafts
   C. Refrigerators and jet air crafts
   D. All of these

8. With the increase in water pollution, the BOD:

   A. Decreases
   B. Increases
   C. Remains the same
   D. Is no measure of pollution

9. The ground water pollution is due to excess of:

   A. DDT is a growth retardant
   B. Pesticides
   C. Minerals
   D. Carbon deposit

10. Air pollution is maximum caused by:

    A. Sewage and industrial effluents
    B. Household detergents and pesticides
    C. Automobile exhausts and chemicals from industry
    D. Sewage and pesticides