Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2011BotanyEcosystemActual

Of the total incident solar radiation the proportion of PAR is

Options

  1. Aabout 60 %
  2. Bless than 50 %
  3. Cmore than 80 %
  4. Dabout 70 %

Correct answer

B. less than 50 %

Step-by-step solution

PAR (Photosynthetically active radiation) designates the spectral range of solar radiation from 400 to 700 ~nm that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation the proportion of PAR is less than 50 % .

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 NEET PYQs