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Ecosystem Test - 36

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Ecosystem Test - 36
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  • Question 1
    1 / -0
    The pyramid of biomass is inverted in
    Solution
    The pyramid of biomass is inverted in a pond or lake ecosystem. The biomass of phytoplankton is less as compared with that of the small herbivorous fish, that feed on these producers. The biomass of large carnivorous fish that depends on small fishes is still greater. Therefore, the pyramid of biomass is inverted in pond ecosystem. Hence, the correct answer is option A.
  • Question 2
    1 / -0
    Which of the following is a sedimentary cycle?
    Solution
    The abiotic components which are recycled without any involvement of the gaseous form are known as the sedimentary cycle. The element is present in the form of salts as rocks in the geosphere which is taken up by the plants and then transferred to the animals. The phosphate is generally transferred and used in the form of ATP by the living cells. 
    Thus, the correct answer is option D. 
  • Question 3
    1 / -0
    In a grassland ecosystem, the shape of pyramid of number is
    Solution
    The food chain is the sequence of population or organisms through which food and its contained energy pass in an ecosystem with members at one step becoming the food of later step of the sequence. In the grassland food chain, the green plant (grass) is the primary producer which makes the food. The rat is the primary consumer. The bird is the secondary consumer. The snake is the tertiary consumer which feeds on the bird. The pyramid for the flow of number is upright because the number of the organisms decreases with the increase in the trophic level.
    Thus, the correct answer is option C. 

  • Question 4
    1 / -0
    The energy storage at consumer level is known as
    Solution
    Secondary productivity is the rate at which consumers convert the chemical energy of their food into their own biomass.
    So, the correct answer is option B.
  • Question 5
    1 / -0
    Biogeochemical cycles are also known as
    Solution
    Biogeochemical cycles may also be referred to as cycles of matter because they link together all organisms and abiotic features on earth. Matter is continually recycled among living and abiotic elements on earth. Biogeochemical cycles facilitate the transfer of matter from one form to another and from one location to another on planet earth.
    Therefore, the correct answer is option A.
  • Question 6
    1 / -0
    Biogeochemical cycles can be traced in 
    Solution
    Biogeochemical cycles are the nutrient cycles. These are the cycles which are responsible for the recycling of the nutrients. The chemical cycles are necessary for the metabolism and maintenance of the organisms in the ecosystem. Biome is a collection of many ecosystems. The nutrient recycling takes place in the ecosystem and biomes. 
    Thus, the correct answer is option D. 
  • Question 7
    1 / -0
    The natural cycle that circulates elements between the earth and the environment is called as 
    Solution
    Biogeochemical cycles are the nutrient cycles. These are the cycles which are responsible for the recycling of the nutrients which are present in the geosphere and atmosphere. The nutrient recycling takes place in the ecosystem and biomes. The recycling of nutrients helps in maintaining the nutrients in the available form for the uptake by the organisms.
    Thus, the correct answer is option C.  
  • Question 8
    1 / -0
    Solar energy can be trapped to the maximum capacity by
    Solution
    The food chain is comprised of different species which depend on each other for energy. The producers are the ones which can convert the solar energy into food. The producers are the autotrophs which can perform photosynthesis represent the first trophic level of the food chain. The grasses can trap maximum amount of the solar energy due to their structure. There are many leaves which from the cluster and the grasses spread over wider area.  
    Thus, the correct answer is option C. 
  • Question 9
    1 / -0
    Which of the following has the maximum number of producer per unit area?
  • Question 10
    1 / -0
    An ecological pyramid of biomass is often an inverted pyramid in which of following ecosystem?
    Solution
    In an aquatic ecosystem, the producers are the algae and the phytoplanktons. The primary consumers are the zooplanktons and the next consumers are the fishes. The biomass of the phytoplanktons is less than the zooplanktons. There is increase in the number of the organisms with increasing trophic level. 
    Thus, the correct answer is option B. 
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