In a forest ecosystem, the numerical relationship between the producers and herbivores:

Related Mcqs:

1. The number of producers and consumers in an ecosystem is mutually controlled by a:

   A. Productivity control
   B. Food chain mechanism
   C. Feedback mechanism
   D. Any of these

2. Forest fires cause millions of rupee of damage each year to the forest. Within the span of a few hours, hard work of generations of forest officers can be ruined. Causes of fires is / are :

   A. Burning of grass and undergrowth along patches frequented by villagers for easy passage
   B. Burning to facilitate the collection of minor produce
   C. Burning of grass by graziers for the sake of the tender grass, which comes up after a fire
   D. Fires caused by sparks from locomotive engines passing through the forest
   E. All of the above

3. The major tool in the hands of the Forest Departments to protect forest areas is the Forest Act of 1927. Its salient features are:

   A. Government is the supreme owner of forestland
   B. Forests have been classed as reserved forests, protected forests, unclassed forests and community forests (Guzara forests), according to the need of protection
   C. Both (a) & (b)
   D. None of these

4. The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is:

   A. 25%
   B. 50%
   C. 10%
   D. 5%

5. In an upright pyramid of biomass, the herbivores occupy the position:

   A. 4
   B. 2
   C. 3
   D. 1

6. In food chain, herbivores are:

   A. Producer
   B. Primary consumer
   C. Secondary consumers
   D. Decomposers

7. In a comparative study of grassland ecosystem and pond ecosystem it may be observed that:

   A. Primary and secondary consumers are similar
   B. Both biotic and abiotic components are different
   C. The biotic components are almost similar
   D. The abiotic components are almost similar

8. Exotic species, which brought for plantation from some other country to our country or even from one ecosystem to other ecosystem are called, as exotic species like:

   A. Pinus nigra – Japan
   B. Euralyptus – Australia
   C. Polunia – China
   D. All of the above

9. In a forest ecosystem, green plants are:

   A. The primary producers
   B. Primary producers only sometimes
   C. The decomposers
   D. The consumers

10. Bacteria and fungi in a forest ecosystem are generally:

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