Correct definition of ecosystem is :

A. A community of organisms interacting with one another

B. The abiotic component of a habitat

C. The part of the earth and its atmosphere which inhabits living organisms

D. The community of organisms together with environment in which they live

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Tropical evergreen forests are seen in
  2. Hie sequence blue green algae > crustose lichens foliose lichens > mosses shrubs dicotyledonous…
  3. Pedology is the study of
  4. Soil particles arranged in order of increasing size are
  5. What is the major constituent of biomass of an organism
  6. Water plants usually have
  7. Which one of the following is associated with the conservation of forest ?
  8. An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
  9. Biosphere is:
  10. . Biome is
  11. Which of the following functions performed by forests help most in controlling drought
  12. Primary treatment of sewage means
  13. Deforestation may reduce the chances of
  14. The source of energy in the ecosystem is:
  15. A pollutant is any substance, chemical or other factor that changes
  16. The biggest herbarium of India is
  17.   Which of the following is normally not at atmospheric pollutant
  18. An American plant which had become a troublesome weed in India is
  19. The first stage of plant succession on earth is called
  20. Vegetation in Delhi is predominantly
  21. Smog is a common pollutant in places having
  22. First link in any food chain is green plant because
  23. Mark which is true
  24. Laterization is a process which results in the
  25. Competition for food, light and space is most severe in
  26. Carbon cycle includes
  27. Commensalism is
  28. Increasing accumulation of DDT in organisms of a food chain in higher trophic levels is known as
  29. Radiation is a health hazard as it causes
  30. A habitat of long severe winters and growing season limited to a few months of summer constitutes