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

Related Mcqs:

1. An association between a fungus and an alga is known as:

   A. Lichen
   B. Mycorrhiza
   C. Mutualism
   D. None of these

2. The lichens show a mutualistic relationship originating from:

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

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

   A. They treat the polluted water
   B. They act as bio-indicators of pollution
   C. They promote pollution
   D. Lichens are not related with pollution

4. The relationship between the alga Microcystis and the surrounding fauna corresponds to:

   A. Amensalism
   B. Parasitism
   C. Predation
   D. Exploitation

5. The relationship between the alga Cladophora and the snail shell on which it grows corresponds to:

   A. Commensalism
   B. Predation
   C. Neutralism
   D. Mutualism

6. A symbiotic association between fungus and roots of higher plants is known as:

   A. Lichen
   B. Mycorrhiza
   C. Mutualism
   D. None of these

7. The necessary human resources could be developed through a combination of activities initiated with the objective of:

   A. Improving data management
   B. Monitoring and research to improve enforcement of legislation, both facilitative and regulatory
   C. Implementing appropriate and multiple use strategies
   D. All of the above

8. The association of nodule bacteria with leguminous roots is known as:

   A. Saprophytism
   B. Symbiosis
   C. Epiphytism
   D. Parasitism

9. The water held tightly in a thin film by te soil particles is known as:

   A. Run away water
   B. Hygroscopic water
   C. Capillary water
   D. Gravitational water

10. The soils that are fully laden with water i.e., water logged, are known are:

    A. Physically dry soils
    B. Physiologically dry soils
    C. Alkaline soils
    D. Acidic soils