Botany - Principles of Ecology Model Question Paper

12th Standard EM

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 02:00:00 Hrs
Total Marks : 60
    8 x 1 = 8
  1. Arrange the correct sequence of ecological hierarchy starting from lower to higher level.

    (a)

    Individual organism → Population Landscape → Ecosystem

    (b)

    Landscape → Ecosystem → Biome → Biosphere

    (c)

    community → Ecosystem → Landscape → Biome

    (d)

    Population → organism → Biome → Landscape

  2. Which of the given plant produces cardiac glycosides?

    (a)

    Calotropis

    (b)

    Acacia

    (c)

    Nepenthes

    (d)

    Utricularia

  3. In soil water available for plants is

    (a)

    gravitational water

    (b)

    chemically bound water

    (c)

    capillary water

    (d)

    hygroscopic water

  4. The plant of this group are adapted to live partly in water and partly above substratum and free from water

    (a)

    Xerophytes

    (b)

    Mesophytes

    (c)

    Hydrophytes

    (d)

    Halophytes

  5. A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla

    (a)

    Nostoc

    (b)

    Anabaena

    (c)

    chlorella

    (d)

    Rhizobium

  6. Pedogenesis refers to

    (a)

    Fossils

    (b)

    Water

    (c)

    Population

    (d)

    Soil

  7. Environment of any community is called

    (a)

    Paratope

    (b)

    Ecotype

    (c)

    Opitope

    (d)

    Biotope

  8. Identify the indicators of fire.

    (a)

    Pucinia

    (b)

    Pyricularia

    (c)

    Pyronema

    (d)

    Peziza

  9. 5 x 1 = 5
  10. The surface features of earth are called _________.

    ()

    Topography

  11. Amensalism is called as__________.

    ()

    Antibiosis

  12. ______________ is the transition zone between two ecosystems.

    ()

    Ecotone

  13. Wasps is the fruits of fig is an example for _________ type of species interaction

    ()

    Mutualism

  14. Plants in sandy soils are commonly called as ____________.

    ()

    Psammophytes

  15. 5 x 1 = 5
  16. Structural defense against five

  17. (1)

    +,-

  18. Mutualism

  19. (2)

    Rhytidome

  20. Predation

  21. (3)

    -.0

  22. Competition

  23. (4)

    +,+

  24. Amensalism

  25. (5)

    -,-

    6 x 2 = 12
  26. Define ecology.

  27. What is ecological hierarchy? Name the levels of ecological hierarchy.

  28. Distinguish habitat and niche

  29. What is Phytoremediation ?

  30. How Earnest Haeckel defined ecology?

  31. What are edaphic factors?

  32. 5 x 3 = 15
  33. What is mutualism? Mention any two example where the organisms involved are commercially exploited in modern agriculture.

  34. Mention any two significant roles of predation plays in nature.

  35. Water is very essential for life. Write any three features for plants which enable them to survive in water scarce environment.

  36. What is vivipary? Name a plant group which exhibits vivipary.

  37. What is seed ball?

  38. 3 x 5 = 15
  39. List out the effects of fire to plants.

  40. Explain different types of hydrophytes with examples.

  41. What are the advantages of seed dispersal?

*****************************************

TN 12th Standard EM Biology free Online practice tests

Reviews & Comments about 12th Biology - Botany - Principles of Ecology Model Question Paper

Write your Comment