One always finds many more of the prey species than of the predator. This is called a

A. food web

B. pyramid of numbers

C. pyramid of succession

D. none of these

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  1. The main cause of soil erosion in India is
  2. In a food-chain, the saprophytic organisms are
  3. An organism which lives at the expense of another organism is called
  4. The most polluted city in the world is
  5. The total interacting animals and plants in any well defined area which as field or a pond is known…
  6. Soil particles are arranged in order of increasing size are
  7. Strontium- 90 can cause
  8. Smog is a combination of
  9. Trophic levels are formed by
  10. The term "ecosystem" was first proposed by
  11. Birth rate under ideal conditions is known as
  12. One always finds many more of the prey species than of the predator. This is called a
  13. Bio tic factors are
  14. Synecology is the study of
  15. Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
  16. Animals which live at the bottom of the sea are called
  17. Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
  18. The source of energy in an ecosystem is
  19. Which one is the direct ecological factor ?
  20. An association between two or more species in which both are benefited is known as
  21. Silent valley of Kerala is preserved because
  22. Pedology is the study of
  23. Plants growing on sea shores show characters of
  24. Which of the following is normally not an important atmospheric pollutant
  25. Biological equilibrium is equilibrium among the
  26. Desert animals are called
  27. Species that occur in different geographical regions separated by special barriers are
  28. Some animals have a constant high body temperature. This is because
  29. When compared to the trophic level above, the total energy present in any given trophic level is necessarily
  30. The transitional zone where two different types of communities meet is called the