Botany: Living World - Important Question Paper

11th Standard

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Biology

Time : 01:00:00 Hrs
Total Marks : 50

    Part A

    10 x 1 = 10
  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. Identify the Archaebacterium

    (a)

    Acetobacter

    (b)

    Erwinia

    (c)

    Treponema

    (d)

    Methanobacterium

  4. The correct statement regarding Blue green algae is

    (a)

    lack of motile structures

    (b)

    presence of cellulose in cell wall

    (c)

    absence of mucilage around the thallus

    (d)

    presence of floridean starch

  5. Identify the correctly matched pair

    (a)

    Actinomycete - Late blight

    (b)

    Mycoplasma - Lumpy jaw

    (c)

    Bacteria - Crown gall

    (d)

    Fungi - Sandal spike

  6. Which among the bacteria breakdown hydrocarbons?

    (a)

    Pseudomonas putida

    (b)

    Lacto bacillus

    (c)

    Bifido bacterium

    (d)

    Nitrosomonas

  7. Match the following disease with their pathogen:

    Name of the disease Name of the pathogen
    (i) Bacterial blight (a) Clavibactor michiganensis
    (ii) Fire blight (b) Xanthomonas citri
    (iii) Citrus canker (c) Xanthomonas oryzae
    (iv) Ring rot  (d) Erwinia amylvora
    (a)

    (i)-(d); (ii)-(c); (iii)-(b); (iv)-(a)

    (b)

    (i)-(c); (ii)-(a); (iii)-(b); (iv)-(d)

    (c)

    (i)-(a); (ii)-(d); (iii)-(b); (iv)-(c)

    (d)

    (i)-(c); (ii)-(d); (iii)-(b); (iv)-(a)

  8. Fusion of two somative cells of the hypae is called:

    (a)

    Anisogamy

    (b)

    Somatogamy

    (c)

    Oogamy

    (d)

    Isogamy

  9. In Bacterial sexual reproduction transformation is demonstrated by _________.

    (a)

    Griffith

    (b)

    Zinder

    (c)

    Tatum

    (d)

    Lederberg

  10. The Earthy Odour is produced from the soil after rain due to presence of ________.

    (a)

    Basidiomycetes

    (b)

    Actinobacteria

    (c)

    Deutromycetes

    (d)

    Oomycetes

  11. Part B

    6 x 2 = 12
  12. Why do farmers plant leguminous crops in crop rotations/mixed cropping?

  13. A complete virus particle is only capable of infection. Do you agree?

  14. Why do we add little curd to milk for making curds?

  15. Why are shoots formed in potato but not formed in carrot?

  16. Mention photosynthetic pigments of cyanobacteria.

  17. Mention various types of fungal reproduction.

  18. Part C

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

  20. Draw a labelled diagram of Mycoplasma.

  21. Differentiate between anabolism and catabolism.

  22. Point out response to stimuli.

  23. Mention Milestones in Virology.

  24. What are the plant diseases of viral disease.

  25. Part D

    2 x 5 = 10
  26. Give a general account on lichens.

  27. Explain transformation in bacteria as experimented by Griffith.

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