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Match List I with List II regarding ecological pyramids and their characteristics. List I List II A. Pyramid of biomass in sea I. Producers are more in number than herbivores B. Pyramid of energy II. Biomass of fishes far exceeds that of phytoplankton C. Pyramid of number in a tree ecosystem III. Energy is lost as heat at each step D. Pyramid of number in grassland IV. A single producer supports many herbivores Choos

Options

  1. AA-II, B-III, C-IV, D-I
  2. BA-II, B-III, C-I, D-IV
  3. CA-III, B-II, C-IV, D-I
  4. DA-IV, B-I, C-II, D-III

Correct answer

A. A-II, B-III, C-IV, D-I

Step-by-step solution

In an aquatic ecosystem (like a sea), the pyramid of biomass is generally inverted because the biomass of consumers (fishes) far exceeds that of the producers (phytoplankton). The pyramid of energy is always upright in all ecosystems because when energy flows from one trophic level to the next, some energy is always lost as heat at each step. In a tree ecosystem, the pyramid of number is not upright because a single producer (the big tree) supports a large number of herbivores (like insects). In a grassland ecosyst

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