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12th Standard English Medium Biology (Botany) Subject Plant Tissue Culture Creative 1 Mark Questions with Solution Part - II

12th Standard

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 5

    1 Marks

    5 x 1 = 5
  1. Identify the group of scientists who developed the intergenic hybrid - the pomato.

    (a)

    Yamada et al.

    (b)

    Horsh et al.

    (c)

    Takebe et al.

    (d)

    Melchers et al.

  2. Which of the following condition favours callus induction?

    (a)

    Temperature of 25°C ± 5°C with 12 hours of photoperiod

    (b)

    Temperature of 25°C ± 2°C with 18 hours of photoperiod

    (c)

    Temperature of 25°C ± 5°C with 14 hours of photoperiod

    (d)

    Temperature of 25°C ± 2°C with 16 hours of photoperiod

  3. The optimal pH of culture medium is generally ___________.

    (a)

    Acidic

    (b)

    Basic

    (c)

    Neutral

    (d)

    Slightly basic

  4. Assertion (A) : Development of root from callus is called caulogenesis.
    Reason (R) : Caulogenesis is the final step of protoplasmic fusion.

    (a)

    Both A and R are correct but R is not a correct explanation to A

    (b)

    R explains A

    (c)

    A is correct R is incorrect

    (d)

    Both A and R are incorrect

  5. The phenomenon of reversion of mature cells to meristematic state leading to callus formation is___________

    (a)

    Redifferentiation

    (b)

    Dedifferentiation

    (c)

    either (a) or (b)

    (d)

    none of these

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