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Ecosystem Test - 86

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Ecosystem Test - 86
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  • Question 1
    1 / -0
    How many statements are incorrect regarding succession?
    (a)During succession climax community is always mesophytes
    (b)Future seral community productivity
    (c)Increases species diversity, Biomass and humus content.
    (d)Gradual replacement from long lived to short lived plant
    Solution
    So the correct option is A.

  • Question 2
    1 / -0
    The pioneers in xerach succession is the
  • Question 3
    1 / -0
    A graphic representation of number of individuals of different species belonging to each trophic level in a an ecosystem is known as
  • Question 4
    1 / -0
    The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called
  • Question 5
    1 / -0
    Ecosystem was first proposed by A.G Tansley in
  • Question 6
    1 / -0
    Species 'richness' is total number of
  • Question 7
    1 / -0
    Which of the following determine the kind (wavelength) and amount of radiation that an object emits?
    Solution
    A. Temperature
    Solution : The amount and kind (wavelength) of the emitted radiation depend on the object's temperature. The higher the temperature the more energetic shorter wavelengths will be given out.
    So the correct answer is " temperature".
  • Question 8
    1 / -0
    The order of succession in a lithosere or xerosere is
    Solution

    Xerosere is a plant succession that is limited by water availability. It includes the different stages in a xerarch succession. The xerarch succession of ecological communities originated in an extremely dry situation such as sand deserts, sand dunes, salt deserts, rock deserts etc. A xerosere may include lithosere (on rock) and psammoseres (on sand).

    The stages in order are -

    Crustose lichen stage->Foilose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)
    So the correct answer is option B.
  • Question 9
    1 / -0
    The intermediate developmental stage in the ecological succession is called ________.
    Solution
    • A seral community is an intermediate development stage found in an ecosystem proceeding towards its climax. In many cases, more than one seral stage evolves until climax conditions are achieved.
    • Ecesis is the process of the establishment of the species in a new area. It means the ability of some migrating plant or animal species, having arrived at a new site to germinate, grow and reproduce successfully.
    • A climax community is the final stage of succession.
    • Succession initiates with the development of a barren area without any form of life is called nudation succession. 
    So, the correct answer is option A.
  • Question 10
    1 / -0
    Which ecological factor/s are responsible for stabilization of community?
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