The incorporation of minerals by microbes is called:

Related Mcqs:

1. Competition for water, minerals, light and space is most severe between two:

   A. Closely related species occupying the same niche B. Closely related species occupying different niche C. Unrelated species occupying the same niche D. Species occupying different overlapping ecosystems...

2. Non-renewable environmental resources include various metals non-metalic minerals and

   A. Coal B. Natural gas C. Oil D. Fossil fuels...

3. Prairies and steppes are parts of the natural regions called:

   A. Temperate grasslands B. Tropical grasslands C. Prairie grasslands D. Steppes grasslands...

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

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

5. The river mouth ecosystem is called:

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

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

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

7. 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...

8. 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)...

9. The rate of storage of food energy at consumer level is called:

   A. Secondary productivity B. Primary productivity C. Gross productivity D. Net productivity...

10. Form of forest produced by introducing a young crop beneath an existing immature is called:

    A. High forest with standards B. Two-storied high forest C. Wedge system D. None of these...