Half Yearly Model Question Paper 2019

11th Standard

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Biology

Time : 02:30:00 Hrs
Total Marks : 70

    Part I

    Answer all the questions.

    Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

    15 x 1 = 15
  1. Which of following represent generation in pteridophytes?

    (a)

    Prothallus

    (b)

    Thallus.

    (c)

    Cone

    (d)

    Rhizophore

  2. Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing micro-organisms?

    (a)

    Crotalaria juncea

    (b)

    Cycas revoluta

    (c)

    Cicer arietinum

    (d)

    Casuarina equisetifolia

  3. Benda named as____________________________​​​​​​

    (a)

    Golgi bodies

    (b)

    Mitochondria

    (c)

    Mitochondrial DNA

    (d)

    Chloroplasts

  4. ____________ is called as reduction division.

    (a)

    Meiosis

    (b)

    Mitosis

    (c)

    Amitosis

    (d)

    Budding

  5. Which reinforces the structure of the cell membrane in animal cells?

    (a)

    Cholesterol

    (b)

    Waxes

    (c)

    Proteins

    (d)

    Gerardus Johannes Mulder

  6. Three domain classification was proposed by_______________

    (a)

    Carl woese

    (b)

    Ernst Haeckel

    (c)

    Whittaker

    (d)

    Theophrastus

  7. The clitellum is a distinct part in the body of earthworm Lampito mauritii, it is found in?

    (a)

    Segments 13 - 14

    (b)

    Segments 14 - 17

    (c)

    Segments 12 - 13

    (d)

    Segments 14 - 16

  8. The end product of Ornithine cycle is

    (a)

    carbon dioxide

    (b)

    uric acid

    (c)

    urea

    (d)

    ammonia

  9. Examine the diagram of the two cell types A and B given below and select the correct option.

    (a)

    Cell-A is the rod cell found evenly all over retina

    (b)

    Cell-A is the cone cell more concentrated in the fovea centralis

    (c)

    Cell-B is concerned with colour vision in bright light

    (d)

    Cell-A is sensitive to bright light intensities

  10. Inland fisheries are

    (a)

    deep sea fishing

    (b)

    capturing fishes from sea coast

    (c)

    raising and capturing fishes in fresh water

    (d)

    oil extraction from fish

  11. In the diagram of lenticel identify the parts marked as A, B, C, D

    (a)

    A. phellem, B. Complementary tissue, C. Phelloderm, D. Phellogen.

    (b)

    A. Complementary tissue, B. Phellem, C. Phellogen,D. Phelloderm.

    (c)

    A. Phellogen, B. Phellem, C. Phelloderm, D. complementary tissue

    (d)

    A. Phelloderm, B. Phellem, C. Complementary tissue, D. Phellogen

  12. Choose the wrong statement.
    i) Hydathodes are pores.
    ii) Guttation occurs through the .epithem
    iii) They are found in plants growing in shady places.
    iv) The water exuded during this process is pure water

    (a)

    i and iii

    (b)

    i,iii, and iv

    (c)

    ii and iii

    (d)

    ii and iv

  13. Choose the plant showing CAM cycle.

    (a)

    Potato

    (b)

    Wheat

    (c)

    Opuntia

    (d)

    Maize

  14. Elongation of internodes in sugarcane is promoted by .................

    (a)

    IAA

    (b)

    GA

    (c)

    Cytokinin

    (d)

    ABA

  15. An example for intermediate day plant is ............

    (a)

    Potato

    (b)

    Sugarcane

    (c)

    Rye

    (d)

    Night Jasmine

  16. Part II

    Answer any 6 questions. Question no. 24 is compulsory.

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

  18. What do you infer from the term pycnoxylic?

  19. Give the technical terms for the following:
    (a) A sterile stamen
    (b) Stamens are united in one bunch
    (c) Stamens are attached to the petals

  20. Name any three odoured plastids

  21. Why are starch and glycogen more suitable than glucose as storage product?

  22. Name the deficiency diseases of protein.

  23. Resistance in the airways is typically low. Why? Give two reasons.

  24. Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450nm & Group B to the light of the wavelength of 500- 550nm. Compare the photosynthetic rate of the 2 groups giving reasons.

  25. What are the parameters used to measure growth of plants?

  26. Part III

    Answer any 6 questions. Question no. 33 is compulsory.

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

  28. Mention three salient features of Brown algae.

  29. Differentiate between aggregate fruit with multiple fruit.

  30. What is the role of national gardens in conserving biodiversity? - Discuss.

  31. Name any four important functions of epithelial tissue and provide at least one example of a tissue that exemplifies each function.

  32. What might be the effect on a person whose diet has less iron content?

  33. Differences Secondary Growth in Dicot Stem and Root

  34. What are enzymes involved in phosphorylation and dephosphorylation reactions in EMP pathway?

  35. Enumerate the uses of stethoscope

  36. Part IV

    Answer all the questions.

    5 x 5 = 25
    1. List the differences between Sap wood and Heart wood?

    2. Explain the principle involved in PET scan

    1. Draw and label the events of cell cycle

    2. How are the kidneys involved in controlling blood volume? How is the volume of blood in the body related to arterial pressure?

    1. How will you distinguish Solanaceae members from Liliaceae members?

    2. Tabulate the comparison of types of cellular organization.

    1. Write the similarities and differences between
      (i) Avicennia and Trapa.
      (ii) Banyan and Silk cotton.
      (iii) Fusiform and Napiform root.

    2. Explain the different types of fleshy fruit with suitable example.

    1. Give a general account on lichens.

    2. Why bryophytes do not attain great heights?

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