GEO - Biosphere Model Question Paper

9th Standard

    Reg.No. :
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Social Science

Time : 01:30:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The coldest biome on Earth is

    (a)

    Tundra

    (b)

    Taiga

    (c)

    Desert

    (d)

    Oceans

  2. To which climatic conditions are Xerophytic plants specifically adapted to?

    (a)

    Saline and sandy

    (b)

    Limited moisture availability

    (c)

    Cold temperature

    (d)

    Humid

  3. Why is the usage of rainforest biomes for large scale agriculture unsustainable?

    (a)

    because it is too wet

    (b)

    because the temperature is too warm.

    (c)

    because the soil is too thin

    (d)

    because the soil is poor

  4. Abiotic components include

    (a)

    Non-living things

    (b)

    Living things

    (c)

    only plants

    (d)

    only animals

  5. Zebra and goat come under __________consumers.

    (a)

    Primary

    (b)

    Secondary

    (c)

    Tertiary

    (d)

    None of the above

  6. 5 x 2 = 10
  7. What is Biosphere?

  8. What does the term ‘biodiversity’ mean?

  9. Mention the various terrestrial biomes.

  10. What is considered a hotspot?

  11. Write a note on Biodiversity.

  12. 5 x 1 = 5
  13. An area where animals, plants and micro organisms live and interact with one another is known as _________

    ()

    .Eco System

  14. ___________ is a system of interlocking and independent food chains.

    ()

    .Food web

  15. The vegetative type commonly found in desert biomes is called ____________

    ()

    .Xerophytes

  16. _____________ is an aquatic biome that is found where fresh water and salt water mix.

    ()

    .Estuary

  17. The chain of transformation of energy from one group of organisms to another through various trophic levels is called a______

    ()

    Food chain

  18. 2 x 2 = 4
  19. Producers and Decomposers

  20. Tropical vegetation and Desert vegetation

  21. 2 x 2 = 4
  22. A: Hotspots are the regions characterised by numerous endemic plants and animal species living in a vulnerable environment.
    R: To manage and focus on conservation work more effectively, researchers identified hotspots.
    a) Both assertion (A) and reason(R) are true; R explains A
    b) Both assertion(A) and reason(R) are true; R does not explain A
    c) A is true; R is false
    d) Both A and R are false

  23. A: The number of gorillas in Africa has plummeted by 60% in the past twenty years.
    R: Non intervention of human beings in the forest areas.
    a) Both assertion (A) and reason(R) are true; R explains A
    b) Both assertion(A) and reason(R) are true; R does not explain A
    c) A is true; R is false
    d) Both A and R are false

  24. 2 x 5 = 10
  25. Explain the various components of ecosystem

  26. Explain about the aquatic biomes on Earth.

  27. 1 x 10 = 10
  28. Locate the following on the world outline map.
    1. Priairies
    2. Downs
    3. Tundra Biomes
    4. Equatorial Biomes

  29. 2 x 1 = 2
  30. Producers are also called autotrophs

  31. Biosphere provides a stable ecosystem.

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