Free NEET Biology multiple-choice questions on Ecological Pyramids. Attempt each question and reveal the answer with a full explanation.
In an ecosystem, the rate of production of organic matter during photosynthesis is GPP . The amount left after respiration ( R ) is NPP . The formula is: GPP - R = NPP NPP - R = GPP GPP + R = NPP NPP + GPP = R The 10 percent law of energy transfer, which states that only 10% of energy is transferred from one trophic level to the next, is also referred to as: Lindeman's Efficiency Tansley's Rule Odum's Law Gause's Law Which of the following equations represents the Verhulst-Pearl Logistic Growth? dN/dt = rN(K-N/K) Calculate the velocity dN/dt = rN dN/dt = rN(K+N/K) dt/dN = rN(K-N/K) The pyramid of biomass in a sea is generally: Inverted Upright Spindle-shaped Bell-shaped In which units is the rate of biomass production (Productivity) expressed? g -2 yr -1 or (kcal , m -2 ) , yr -1 Only g/m 2 Only kcal/m 2 kg/m Which of the following values represents the estimated Net Primary Productivity of the whole biosphere? 170 billion tons 55 billion tons 115 billion tons 200 billion tons What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g Primary consumer : 60 g Primary producer : 10 g Upright pyramid of numbers Pyramid of energy Inverted pyramid of biomass Upright pyramid of biomass Match List-I with List-II. Choose the correct answer from the options given below: A-III, B-IV, C-II, D-I A-I, B-II, C-III, D-IV A-II, B-I, C-IV, D-III A-III, B-I, C-II, D-IV Which 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 follows the 1% law Choose the correct answer from the options given below : (a), (b) and (c) (a) and (b) only (a) and (c) only (b) and (c) only What is the relationship between Gross Primary Productivity ( GPP ), Net Primary Productivity ( NPP ), and Respiration loss ( R )? GPP - R = NPP NPP - R = GPP GPP + NPP = R GPP / R = NPP In a logistic growth curve, when does the population density reach the carrying capacity? When the growth rate becomes zero When the growth rate is maximum At the beginning of the lag phase During the exponential phase Which one of the following is not used for construction of ecological pyramids ? Dry weight Number of individuals Rate of energy flow Fresh weight If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain ? plant → mice → snake → peacock :- 0.02 J 0.002 J 0.2 J 0.0002 J Which of the following ecological pyramids is generally inverted? (1) Pyramid of biomass in a sea (2) Pyramid of numbers in grassland (3) Pyramid of energy (4) Pyramid of biomass in a forest Which of the following statements is not correct? Pyramid of biomass in sea is generally upright. Pyramid of energy is always upright. Pyramid of numbers in a grassland ecosystem is upright. Pyramid of biomass in sea is generally inverted. Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for: Pyramid of number in grassland Pyramid of energy in pond ecosystem Pyramid of biomass in grassland Pyramid of biomass in sea According to the 10 percent law of energy transfer, if the energy available at the producer level is 1000 J, the energy available at the tertiary consumer level will be: 1 J 10 J 100 J 0.1 J