If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected because:

Related Mcqs:

1. In natural ecosystem, decomposers include:

   A. Only bacteria and fungi
   B. Only microscopic animals
   C. The above two types of organisms plus macroscopic animals
   D. Only the above two types of organisms

2. The decomposers in an ecosystem constitute the following trophic level:

   A. T1
   B. T3
   C. T5
   D. T4

3. In natural ecosystem, decomposers include:

   A. Only two types of organisms
   B. Only two types of organisms plus macroscopic animals
   C. Only microscopic animals
   D. Only bacteria and fungi

4. Decomposers are:

   A. Autotrophs
   B. Heterotrophs
   C. Organotrophs
   D. Auto heterotrophs

5. Sand dunes adversely affect:

   A. Communication system
   B. Human health
   C. Cultivation
   D. Animal health
   E. All of the above

6. 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

7. 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

8. Niche of a species in an ecosystem refers to its:

   A. Place of occurrence
   B. Competitive ability
   C. Centre of origin
   D. Function at its place of occurrence

9. Endangered habitats or wildlife species could also be identified completely or partially outside the protected areas. Conservation programmes should therefore be addressed to:

   A. Involvement of local communities. Work to be undertaken outside the protected area system, hence heavily based on community-led and managed activities, and awareness building
   B. Educational programmes to reach the students at grass root level
   C. Reduced hunting be the message to be conveyed to different offices
   D. Promotion of non-chemical control of agricultural pests
   E. All of the above

10. An ecosystem may be defined as:

    A. A localized association of several plants and animals
    B. Different communities of plants, animals and microbes, together with their physico-chemical environments
    C. Different communities of plants and microbes plus their physico-chemical environments
    D. None of the above