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The most widespread form of symbiosis in nature is

A. mutualism

B. commensalism

C. predatism

D. parasitism

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  1. When compared to the trophic level above, the total energy present in any given trophic level is necessarily
  2. Trophic levels are formed by
  3. Acid rain is
  4. Which of the following is normally not an important atmospheric pollutant
  5. Which one is the direct ecological factor ?
  6. In a food-chain, the saprophytic organisms are
  7. Species that occur in different geographical regions separated by special barriers are
  8. Which is the correct sequence in a food-chain
  9. Which of the following is an anti-forest conservation activity ?
  10. Birth rate under ideal conditions is known as
  11. Animals in cold regions have fur because
  12. The total set of feeding relationships in a biotic community is called
  13. A pond is
  14. Some animals have a constant high body temperature. This is because
  15. The energy storage of consumer level is called
  16. In an ecosystem the population of
  17. All the living organisms on earth constitute
  18. The whale is
  19. Desert animals are called
  20. Silent valley of Kerala is preserved because
  21. Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
  22. The soils transported by water are called
  23. The total interacting animals and plants in any well defined area which as field or a pond is known…
  24. Ultra-violet radiation from sunlight causes the reaction that produce
  25. Biological equilibrium is equilibrium among the
  26. Strontium- 90 can cause
  27. The most widespread form of symbiosis in nature is
  28. Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
  29. Plants growing on sea shores show characters of
  30. Pedology is the study of