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11th Standard Botany - Plant Growth and Development English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

11th Standard

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Botany

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Select the wrong statement from the following:

    (a)

    Formative phase of the cells retains the capability of cell division.

    (b)

    In elongation phase development of central vacuole takes place.

    (c)

    In maturation phase thickening and differentiation take place.

    (d)

    In maturation phase, the cells grow further.

  2. In unisexual plants, sex can be changed by the application of

    (a)

    Ethanol

    (b)

    Cytokinins

    (c)

    ABA

    (d)

    Auxin

  3. Which hormone is maximum in coconut milk?

    (a)

    Gibberellins

    (b)

    Ethylene

    (c)

    Cytokinin

    (d)

    Auxin

  4. The term synergistic action of hormones refers to

    (a)

    When two hormones act together but brings about opposite effects.

    (b)

    When two hormones act together and contribute to the same function.

    (c)

    When one hormone affects more than one function.

    (d)

    When many hormones bring about opposite effects

  5. Kurosawa found plants suffering from Bakanae disease. This led to discovery of ................

    (a)

    GA

    (b)

    Cytokinin

    (c)

    ethylene

    (d)

    2,4, D

  6. The.term kinetin was coined by .................

    (a)

    Skoog

    (b)

    Haberlandt

    (c)

    Kurosawa

    (d)

    Lethon

  7. Ripe bananas contain lot of ............

    (a)

    ethylene

    (b)

    ABA

    (c)

    IAA

    (d)

    IPA

  8. Bio Assay of ABA was done with

    (a)

    cotton bolls

    (b)

    Pineapple

    (c)

    Rice

    (d)

    Sugarcane

  9. .............. is a day neutral plant.

    (a)

    Bryophyllum

    (b)

    Wheat

    (c)

    Tobacco

    (d)

    Tomato

  10. Seed viability lasting for 1000 years has been recorded in .............

    (a)

    Oxalis

    (b)

    Lotus

    (c)

    Tobacco

    (d)

    Bauhinia

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