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Ecosystem Test ...

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  • Question 1
    1 / -0

    In a food chain, if the grasses produce 1000 kcal of energy, how many kcal are theoretically available to the frogs?

  • Question 2
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    For a stable lake ecosystem, the net primary production (NPP) is equal to the

  • Question 3
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    The data given in the table shows species richness of mosses, shrubs and trees calculated for one hectare $$(10,000 m^2)$$ of land every 50 years for 200 years based on a long running ecological study.

    YearMossesShrubsTrees
    18001620
    18502174
    19001053
    195013126
    2000172814
    The ecological process occurring according to the data is

  • Question 4
    1 / -0

    A stable lake ecosystem shows net primary production which is equal to the 

  • Question 5
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    Choose the correct statement regarding ecological succession.

  • Question 6
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    The study of a pond revealed the presence of skimmers and minnows in it. Which of the following process is responsible for the conversion of pond into a swampy land after 15 years showing the prevalence of frogs and snakes?

  • Question 7
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    Read the passage and answer the following question.

    A population study of plants was done in an abandoned field. Each year for $$3$$ years the vegetation was sampled. The chart indicates the results of the body.

    YearNumber of Plants per Acre
    SandspurRagweedTimothy GrassGoldenrodWire Grass
    $$1$$$$3,800$$$$4,900$$$$600$$$$0$$$$412$$
    $$2$$$$1,500$$$$2,209$$$$1,185$$$$75$$$$796$$
    $$3$$$$752$$$$180$$$$2,234$$$$790$$$$1,643$$$

    Which of the following are initially most successful in succession?

  • Question 8
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    According to the theories of succession, what will be the result?

  • Question 9
    1 / -0

    Which one of the following is true for a climax community?

  • Question 10
    1 / -0

    Which of the following is true about climax community?

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