Food levels in an ecosystem are called:

Related Mcqs:

1. 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

2. 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

3. The ration of food energy assimilated to the food energy ingested is called:

   A. Trophic level efficiency
   B. Photosynthetic efficiency
   C. Net production efficiency
   D. Assimilation efficiency

4. A food chain has the following trophic levels:

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

5. In a food chain, the total amount of living material is depicted by: A. Pyramid of biomass B. Pyramid of energy C. Pyramid of number D. Trophic levels

   xA. Pyramid of biomass
   B. Pyramid of energy
   C. Pyramid of number
   D. Trophic levels

6. Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying:

   A. First trophic level
   B. Second trophic level
   C. Third trophic level
   D. Fourth trophic level

7. When the number of organisms at successive levels are plotted, they assume the space of a pyramid. This is called the pyramid of:

   A. Energy
   B. Number
   C. Biomass
   D. Both (a) and (c)

8. The cycling of elements in an ecosystem is called:

   A. Chemical cycle
   B. Biogeochemical cycle
   C. Geological cycle
   D. Geochemical cycle

9. The river mouth ecosystem is called:

   A. Estuarine
   B. Lotic
   C. Lentic
   D. None of these

10. The ecosystem lying in the alpine zone between taiga and polar ice is called:

    A. Savana
    B. Autotrophic
    C. Heterotrophic
    D. Tundra