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12th Standard English Medium Biology (Botany) Subject Principles of Ecology Book Back 1 Mark Questions with Solution Part - II

12th Standard

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 5

    1 Marks

    5 x 1 = 5
  1. Which of the following ecosystem has the highest primary productivity?

    (a)

    Pond ecosystem

    (b)

    Lake ecosystem

    (c)

    Grassland ecosystem

    (d)

    Forest ecosystem

  2. Ecosystem consists of ____.

    (a)

    decomposers

    (b)

    producers

    (c)

    consumers

    (d)

    all of the above

  3. Which one is in descending order of a food chain?

    (a)

    Producers \(\rightarrow \) Secondary consumers \(\rightarrow \) Primary consumers \(\rightarrow \) Tertiary consumers

    (b)

    Tertiary consumers \(\rightarrow \) Primary consumers \(\rightarrow \)Secondary consumers \(\rightarrow \) Producers

    (c)

    Tertiary consumers \(\rightarrow \) Secondary consumers \(\rightarrow \) Primary consumers \(\rightarrow \) Producers

    (d)

    Tertiary consumers \(\rightarrow \) Producers \(\rightarrow \) Primary consumers \(\rightarrow \) Secondary consumers

  4. Significance of food web is / are ______.

    (a)

    it does not maintain stability in nature

    (b)

    it shows patterns of energy transfer

    (c)

    it explains species interaction

    (d)

    b and c

  5. The following diagram represents

     

    (a)

    pyramid of number in a grassland ecosystem

    (b)

    pyramid of number in a pond ecosystem

    (c)

    pyramid of number in a forest ecosystem

    (d)

    pyramid of biomass in a pond ecosystem

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