Botany - Living World Important Questions

11th Standard

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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. Which one of the following statement about virus is correct?

    (a)

    Possess their own metabolic system

    (b)

    They are facultative parasites

    (c)

    They contain DNA or RNA

    (d)

    Enzymes are present

  2. Identify the incorrect statement about the Gram positive bacteria

    (a)

    Techoic acid absent

    (b)

    High percentage of peptidoglycan is found in cell wall

    (c)

    Cell wall is single layered

    (d)

    Lipopolysaccharide is present in cell wall

  3. Basidiomycetes do not possess this feature.

    (a)

    Clamp connection

    (b)

    Club Fungi

    (c)

    Dolipore septum

    (d)

    Lack sexual reproduction

  4. A plant growth promoter got from fungi is ___________

    (a)

    Rennet

    (b)

    Gibberellin

    (c)

    Ergot

    (d)

    Griseofulvin

  5. Monotropa derives nutrition by ___________

    (a)

    Root Nodules

    (b)

    Lichens

    (c)

    Mycorrhizae

    (d)

    Roots

  6. 6 x 2 = 12
  7. Differentiate Homoiomerous and Heteromerous lichens.

  8. Write the distinguishing features of Monera.

  9. Why do farmers plant leguminous crops in crop rotations/mixed cropping?

  10. How do living things grow?

  11. What is Homeostasis?

  12. How was the word virus derived?

  13. 6 x 3 = 18
  14. Briefly discuss on five kingdom classification, Add a note on merits and demerits.

  15. List some viral diseases which occur in Humans.

  16. What are the three main symmetry of viruses?

  17. Write down the living characteristic features of virus.

  18. Write down the non- living characteristic features of virus.

  19. What is Viroid? Who discovered it?

  20. 3 x 5 = 15
  21. Give a general account on lichens.

  22. Describe the structure of Tobacco Mosaic Virus.

  23. Give a concise account on virulent cycle / Explain Lytic cycle of a phage.

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