Living World Important Questions

11th Standard

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Biology

Answer all the questions 

Time : 02:30:00 Hrs
Total Marks : 100

    Part A

    35 x 1 = 35
  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 correctly matched pair

    (a)

    Actinomycete - Late blight

    (b)

    Mycoplasma - Lumpy jaw

    (c)

    Bacteria - Crown gall

    (d)

    Fungi - Sandal spike

  3. Monotropa derives nutrition by ___________

    (a)

    Root Nodules

    (b)

    Lichens

    (c)

    Mycorrhizae

    (d)

    Roots

  4. Living things are made of ___________

    (a)

    Organisms

    (b)

    Atoms

    (c)

    Organs

    (d)

    Cells

  5. ______________ is a basic unit of life.

    (a)

    Atoms

    (b)

    Compounds

    (c)

    Soils

    (d)

    Cell

  6. Identify the sequence involved in lytic life cycle.
    (a) Pinning
    (b) Maturation
    (c) Synthesis
    (d) Ghost

    (a)

    ABCD

    (b)

    ADCB

    (c)

    DACB

    (d)

    ACDB

  7. Griffith demonstrated Transformation in ________________

    (a)

    1928

    (b)

    1930

    (c)

    1975

    (d)

    1900

  8. Which Gram negative bacterium caused Duodenal and Gastric ulcers?

    (a)

    Helicobacter Pylori

    (b)

    Helicobacter Vibrio

    (c)

    E.Coli

    (d)

    Haemophillus

  9. Bacterial photosynthesis differs from higher plants in evolution of ____________.

    (a)

    Oxygen

    (b)

    Hydrogen sulphide

    (c)

    Hydrogen

    (d)

    CO2

  10. ______________ is a capnophilic bacteria.

    (a)

    Campylobacter

    (b)

    Chlorobium

    (c)

    Chromatium

    (d)

    Clostridium

  11. Who discovered plasmid?

    (a)

    David

    (b)

    Koch

    (c)

    Joshua Lederberg

    (d)

    Griffith

  12. A completely closed ascocarp is called ______________

    (a)

    cleistothecium

    (b)

    perethecium

    (c)

    apothecium

    (d)

    pseudothecium

  13. Cyanophages means:

    (a)

    Viruses infecting red algae

    (b)

     Viruses infecting brown algae

    (c)

    Viruses infecting blue green algae

    (d)

    Viruses infecting green algae

  14. PHB means:

    (a)

    Poly Hexo Butyrate

    (b)

    Poly Hydrolxl Butyle

    (c)

    Poly - β Hydroxl Butyrate

    (d)

    Poly Hedral Butyrate

  15. Transfer of DNA from one bacterium to another is called:

    (a)

    Conjugation

    (b)

    Transformation

    (c)

    Transduction

    (d)

    Binary fission

  16. Viruses have nucleic acid core surrounded by __________.

    (a)

    Protein coat

    (b)

    Lipid

    (c)

    Ammonia

    (d)

    Glucose

  17. TMV is discovered by _______.

    (a)

    d' Herelle

    (b)

    Stanley

    (c)

    Loffler

    (d)

    Dimitry Ivanowsky

  18. The process involving the recognition of phage to bacterium is called _________.

    (a)

    Landing

    (b)

    Pinning

    (c)

    Splicing

    (d)

    Attachment

  19. Three Kingdom System of classification was given by _________.

    (a)

    Ernst Hackel

    (b)

    Copeland

    (c)

    Copeland

    (d)

    R.H.Whittaker

  20. Typhoid is caused by ______________.

    (a)

    Acetobacter

    (b)

    Rhizobium

    (c)

    Salmonella typhi 

    (d)

    E. coli

  21. The special type of pili helps in conjugation called ________.

    (a)

    Flagella

    (b)

    Sexpili

    (c)

    Mesosomes

    (d)

    Plasmid

  22. Plaque is caused by ___________.

    (a)

    Vibrio cholerae

    (b)

    Salmonella

    (c)

    Yersinia pestis

    (d)

    Clostridium

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

    (a)

    Basidiomycetes

    (b)

    Actinobacteria

    (c)

    Deutromycetes

    (d)

    Oomycetes

  24. __________is called as "Club fungi".

    (a)

    Actinomycetes

    (b)

    Deutromycetes

    (c)

    Basidiomycetes

    (d)

    Phagomycetes

  25. Bengal femaine is due to __________.

    (a)

    Ergot

    (b)

    Phytophthora

    (c)

    Helminthosporium

    (d)

    Ustilago

  26. Litmus paper is obtained from _________.

    (a)

    Rocellamontagne

    (b)

    Lasallia

    (c)

    Cladonia

    (d)

    Both band c.

  27. Select the mismatch

    (a)

    Pinus - Dioecious

    (b)

    Cycas - Dioecious

    (c)

    Salvinia - Heterosporous

    (d)

    Equisetum - Homosporou

  28. Which one of the following statements is wrong?

    (a)

    Cyanobacteria are also called blue-green algae

    (b)

    Golden algae are also called desmids

    (c)

    Eubacteria are also called false bacteria

    (d)

    Phycomycetes are also called algal fungi

  29. Which of the following organism undergoes regeneration?

    (a)

    Spirogyra

    (b)

    Planaria

    (c)

    Yeast

    (d)

    Aspergillus

  30. Which is not a part of five kingdom classification?

    (a)

    Viruses

    (b)

    Monera

    (c)

    Protista

    (d)

    Mycoplasma

  31. The term bacterium was coined by _________ .

    (a)

    Stanley

    (b)

    Ehrenberg

    (c)

    Gram

    (d)

    Koch

  32. Transformation in bacteria was demonstrated by _________ .

    (a)

    Lederberg

    (b)

    Zinder

    (c)

    Edward

    (d)

    Griffith

  33. _____________ is NOT a phycobiont in lichens.

    (a)

    Gloeocapsa

    (b)

    Dermacarpa

    (c)

    Scytonema

    (d)

    Nostoc

  34. In which mycelium, the hyphae are arranged loosely?

    (a)

    Prosenchyma

    (b)

    Plectenchyma

    (c)

    Pseudoparenchyma

    (d)

    Arenchyma

  35. __________ acid is obtained from lichen acting as antibiotics.

    (a)

    Alginic

    (b)

    Acetic

    (c)

    Oxalic

    (d)

    Usnic

  36. Part B

    13 x 2 = 26
  37. What is Homeostasis?

  38. Categorise the following based on nutrition.
    (a) Chlorobium (b) Iron bacteria

  39. Explain the statement of non-living things also grow.

  40. Why is Rhizopus called as 'Bread mould'?

  41. Point out Green sulphur bacteria.

  42. Define bacteria and bacteriology.

  43. Define mycology. Who is the founder of mycology?

  44. Arrange the following in a proper sequence with respect to fungal sexual cycle.
    Karyogamy, protoplasmic fusion, meiosis and spores production.

  45. Why viruses are not included in the category of microorganisms?

  46. Generally nucleic acid in viruses is present as single unit. Name any two viruses that possess segmented nucleic acid.

  47. When does a prophage enter lytic cycle?  

  48. Imagine yourself as Carl Woese and explain your colleagues about your classification.

  49. Name the strains used in Gram staining procedure.

  50. Part C

    8 x 3 = 24
  51. What is transduction? Mention the types.

  52. What is Mycorrhiza? Mention the types.

  53. Identify the diagram and label any 2 parts.

  54. Describe Cellular structure.

  55. Collect the Merits of five kingdom classification.

  56. Write the characteristics of phycomycetes in fungus.

  57. Draw Amphitrichous, Lophotrichous and Peritrichous flagellation in bacteria.

  58. How symbiotic relationship is executed in mycorrhiza?

  59. Part D

    3 x 5 = 15
  60. Explain Lysogenic cycle of a phage.

  61. Describe the structure of T4 phage.

  62. List out the beneficial aspects of lichens.

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