Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020BotanyEcosystemPractice

Consider the following four statements (1-4), select the correct option stating which ones are true (T) and which ones are false (F) 1 An organism at each trophic level depends on those at a higher trophic level for their energy demands. 2 Each trophic level has a certain mass of living material at a particular time called the standing crop. 3 Each trophic level has a certain mass of non-living material at a particul

Options

  1. A1 - T , 2 - T , 3 - F , 4 - F
  2. B1 - F , 2 - T , 3 - F , 4 - T
  3. C1 - T , 2 - F , 3 - T , 4 - F
  4. D1 - F , 2 - T , 3 - T , 4 - F

Correct answer

D. 1 - F , 2 - T , 3 - T , 4 - F

Step-by-step solution

Standing crop is the total amount of living material in a specified population at a particular time, generally expressed as biomass. The standing crop may show variation at different times of the year. The availability of the inorganic content available to an organism at given time in the ecosystem is referred to as standing state. Nutrients, such as, carbon, nitrogen, phosphorus, calcium, etc. form part of the inorganic content. The sequential transfer of nutrients and energy in the form of food from one organism

Practice Ecosystem on Quantrex Academy →

More from Ecosystem

Match List I with List II : List I List II A. Productivity I. Gross primary productivity minus respiration losses B. Net primary productivity II. Rate of formation of new organic m 2026Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for : 2026Which of the following statements are correct ? (a) Energy flow from producers to consumers is unidirectional (b) Energy pyramid can never be inverted (c) Transfer of energy follow 2026Which of the following are primary consumers in a food chain ? 2026Match List I with List II : List I List II A. Decomposition I. Accumulation of dark coloured amorphous colloidal substance B. Detritus II. Release of inorganic nutrients by the act 2026Which of the following is the unit of productivity of an Ecosystem? 2025Given below are two statements: Statement I : The primary source of energy in an ecosystem is solar energy. Statement II : The rate of production of organic matter during photosynt 2025Given below are two statements: Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers to consumers. Statement II: Ecosystems are exempted from 2nd 2025 Full Ecosystem list All NTA Abhyas NEET PYQs