Carbon cycle includes:

Related Mcqs:

1. Which of the following is logical sequence of carbon cycle:

   A. Photosynthesis-consumer-decomposer
   B. Decomposer-consumer-photosynthesis
   C. Photosynthesis-decomposer-consumer
   D. Consumer-photosynthesis-decomposer

2. Mark the incorrect statement with reference to carbon cycle:

   A. Lime rocks contribute to CO2 of water
   B. Atmospheric CO2 gets dissolved in water
   C. CO2 is returned by combustion of fuel
   D. 75% of total carbon lies in geological component

3. The main role of bacteria in the carbon cycle involves:

   A. Photosynthesis
   B. Assimilation of nitrogenous compounds
   C. Chemosynthesis
   D. Digestion or breakdown of organic compounds

4. If carbon dioxide is withdrawn from the biosphere, which organism would first experience negative effect?

   A. Primary consumers
   B. Producers
   C. Secondary consumers
   D. Tertiary consumers

5. The processes involving the transformation of carbon compounds on earth include:

   A. Only the plants
   B. Both biological and non-biological processes
   C. Only the living organisms
   D. Only the animals

6. Which of the following serves as source of carbon in plants:

   A. CO2 of carbonic rocks
   B. Atmospheric CO2
   C. Fossil fuel
   D. All of the above

7. Which ecological cycle is directly driven by sunlight?

   A. Hydrologic
   B. Phosphorus
   C. Nitrogen
   D. Sulphur

8. Hydrological cycle is under the control of:

   A. Grasslands
   B. Forests
   C. Planktons
   D. Epiphytes

9. In the phosphorus cycle, weathering makes phosphate available first to:

   A. Decomposers
   B. Consumers
   C. Producers
   D. All the above

10. From the onwards the coppice crop will be thinned on a ______ cycle:

    A. 5 years
    B. 7 years
    C. 10 years
    D. None of these