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NTA Abhyas NEET2020BotanyEcosystemPractice

An inverted pyramid of number and an inverted pyramid of biomass are respectively seen in:

Options

  1. AGrassland Tree ecosystem
  2. BSea and Tree ecosystem
  3. CTree and Sea ecosystem
  4. DSea and Grassland ecosystem

Correct answer

C. Tree and Sea ecosystem

Step-by-step solution

Ecological pyramids are of 3 types (a) Pyramid of Energy: Always upright, without any exception, because at successive trophic levels only 10% energy is transferred. (b) Pyramid of number: Mostly upright, except - tree ecosystem, in which on the single large tree several birds survive and on these birds several parasites are present. (c) Pyramid of Biomass: Mostly upright, except - Sea/aquatic ecosystem, in which producers are planktons which have very less weight although dependent smaller and larger fishes have c

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