" /> -->

PRE PUBLIC BIO12,13,14

10th Standard EM

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Science

CHOOSE THE CORRECT ANSWER.WRITE ANSWER AND OPTION ALSO
Time : 01:00:00 Hrs
Total Marks : 100
    13 x 1 = 13
  1. The endarch condition is the characteristic feature of

    (a)

    root

    (b)

    stem

    (c)

    leaves

    (d)

    flower

  2. The xylem and phloem arranged side by side on same radius is called _________

    (a)

    radial

    (b)

    amphivasal

    (c)

    conjoint

    (d)

    None of these

  3. Which is formed during anaerobic respiration

    (a)

    Carbohydrate

    (b)

    Ethyl alcohol

    (c)

    Acetyl CoA

    (d)

    Pyruvate

  4. Mitochondria was discovered by ___________

    (a)

    Sachs

    (b)

    Kelvin

    (c)

    Melvin

    (d)

    Kolliker

  5. The segments of leech are known as

    (a)

    Metameres (somites)

    (b)

    Proglottids

    (c)

    Strobila

    (d)

    All the above

  6. Pharyngeal ganglion in leech is a part of

    (a)

    Excretory system

    (b)

    Nervous system

    (c)

    Reproductive system

    (d)

    Respiratory system

  7. The body of leech has

    (a)

    23 segments

    (b)

    23 segments

    (c)

    38 segments

    (d)

    30 segments

  8. Leeches have ___________

    (a)

    heart

    (b)

    lungs

    (c)

    true blood vessels

    (d)

    excretory organs

  9. Which of the following process requires energy?

    (a)

    active transport

    (b)

    diffusion

    (c)

    osmosis

    (d)

    all of them

  10. Which is the sequence of correct blood flow

    (a)

    ventricle - atrium - vein - arteries

    (b)

    atrium - ventricle - veins - arteries

    (c)

    atrium - ventricle - arteries - vein

    (d)

    ventricles - vein - atrium - arteries

  11. ‘Heart of heart’ is called

    (a)

    SA node

    (b)

    AV node

    (c)

    Purkinje fibres

    (d)

    Bundle of His

  12. Which one of the following regarding blood composition is correct

    (a)

    Plasma - Blood + Lymphocyte

    (b)

    Serum - Blood + Fibrinogen

    (c)

    Lymph - Plasma + RBC + WBC

    (d)

    Blood - Plasma + RBC+ WBC +Platelets

  13. Identify the wrong statement

    (a)

    Guttation occurs through stomata

    (b)

    Water molecules stick to xylem because of adhesion

    (c)

    Stoma closeswhen guard cells are not turgid

    (d)

    Elements like calcium are not remobilised

  14. MATCH THE FOLLOWING
    4 x 1 = 4
  15. Amphicribal

  16. (1)

    Decrease in leucocytes

  17. Amphivasal

  18. (2)

    Pressure in xylem

  19. Root Pressure

  20. (3)

    Dracaena

  21. Leucopenia

  22. (4)

    Fern

    CHOOSE THE CORRECTION OPTION FOR THE BELOW ASSERTION AND REASON
    3 x 2 = 6
  23. Assertion : Pholem conducts food materials to different parts of the plant.
    Reason : Xylem conducts water and minerals to different parts of the plant.
    (a) Both Assertion and Reason are true and Reason is correct explanation of Assertion.
    (b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    (c) Assertion is true but Reason is false.
    (d) Both Assertion and Reason are false

  24. Assertion : Rabbit is a herbivorous animaL
    Reason : Canines are absent in rabbit
    (a) Both Assertion and Reason are true and Reason is correct explanation of Assertion.
    (b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    (c) Assertion is true but Reason is false.
    (d) Both Assertion and Reason are false

  25. Assertion: In fishes the oxygenated anddeoxygenated blood are mixed.
    Reason: The blood passes through the heart only once.
    (a) Both assertion and reason are true and reason is correct explanation of assertion.
    (b) Both assertion and reason are true but reason is not the correct explanation of assertion.
    (c) Assertion is true but reason is false.
    (d) Both assertion and reason are false.

  26. WRITE SHORT ANSWER IN ONE OR TWO SENTENCES
    6 x 2 = 12
  27. What is exarch xylem?

  28. What is protoxylem lacuna?

  29. Do leeches have eyes and ears

  30. What is a dental formula?

  31. Artery which arises from left ventricle.

  32. Valves present at the base of the aorta.

  33. WRITE TRUE OR FALSE.IF FALSE WRITE CORRECT STATEMENT
    3 x 2 = 6
  34. In monocot stem cambium is present in between xylem and phloem.

  35. An anticoagulant present in saliva of leech is called heparin.

  36. The phloem is responsible for the translocation of food.

  37. WRITE SHORT ANSWER IN ONE OR TWO SENTENCES

    10 x 2 = 20
  38. What is collateral vascular bundle?

  39. Where does the carbon that is used in photosynthesis come from?

  40. Name the phenomenon by which carbohydrates are oxidized to release ethyl alcohol.

  41. Give the common name of the Hirudinaria granulosa

  42. How is diastema formed in rabbit?

  43. How does leech suck blood from the host?

  44. Name two layered protective covering of human heart.

  45. What is the shape of RBC in human blood?

  46. Name the heart valve associated with the major arteries leaving the ventricles.

  47. Mention the artery which supplies blood to the heart muscle.

  48. WRITE BRIEF ANSWERS


    6 x 4 = 24
  49. Write a short note on mesophyll.

  50. Why should the light dependent reaction occur before the light independent reaction?

  51. Why are the rings of cartilages found in trachea of rabbit?

  52. How is the digestive system of rabbit suited for herbivorous mode of feeding?

  53. What is cohesion?

  54. Who discovered Rh factor? Why was it named so?

  55. WRITE IN DETAIL
    3 x 7 = 21
  56. Differentiate the following
    a) Monocot root and Dicot root
    b) Aerobic and Anaerobic respiration

  57. Shylesh has some pet animals at his home. He has few rabbits too, one day while feeding them he observed something different with the teeth. He asked his grandfather, why is it so? What would have been the explanation of his grandfather?

  58. Transpiration is a necessary evil in plants. Explain.

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

Reviews & Comments about 10th standard science Pre Public Model Question paper ( biology )-2019 -2020

Write your Comment