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NTA Abhyas NEET2020BotanyEcosystemPractice

Which of the following statement is not correct?

Options

  1. AEcosystem is an open system
  2. BEcosystem is self-sustaining and dynamic structure
  3. CSun is the ultimate source of energy for any ecosystem
  4. DIn an artificial ecosystem flow of energy is not unidirectional

Correct answer

D. In an artificial ecosystem flow of energy is not unidirectional

Step-by-step solution

The pyramid of energy is always upright because the flow of energy is unidirectional from producer to consumer level. The energy content is maximum in producers. The energy decreases at each trophic level of the food chain, as part of the energy is lost as heat, and the major part of the energy is liberated during respiration for use in various activities. Only 10% of the energy of the previous trophic level is received by the next trophic level, as proposed by 10 percent law of Lindeman (1942).

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