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11th Standard Botany - Transport in Plants English Medium Free Online Test One Mark Questions 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. In a fully turgid cell

    (a)

    DPD = 10 atm; OP = 5 atm; TP = 10 atm

    (b)

    DPD = 0 atm; OP = 10 atm; TP = 10 atm

    (c)

    DPD = 0 atm; OP = 5 atm; TP = 10 atm

    (d)

    DPD = 20 atm; OP = 20 atm; TP = 10 atm

  2. Stomata of a plant open due to

    (a)

    Influx of K+

    (b)

    Efflux of K+

    (c)

    Influx of Cl-

    (d)

    Influx of OH-

  3. Which among the following are common to facilitated diffusion and active transport?

    (a)

    depend on respiratory energy

    (b)

    transport along concentration gradient

    (c)

    involvement of carrier proteins

    (d)

    all the above

  4. Embolism during ascent of sap refers

    (a)

    cavitation in phloem

    (b)

    gas bubble replacing the water in xylem

    (c)

    disappearance of gas from xylem

    (d)

    undisturbed water column

  5. According to cytochrome pump theory the anions and cations are transported by,

    (a)

    active absorption

    (b)

    passive absorption

    (c)

    active and passive absorption respectively

    (d)

    passive and active absorption respectively

  6. Process of fumigation works on the principle of ______

    (a)

    Imbibition

    (b)

    Diffusion

    (c)

    Active transport

    (d)

    Passive transport

  7. The term DPD was coined by ______

    (a)

    Renner

    (b)

    Munch

    (c)

    Dixon

    (d)

    Meyer

  8. 1. J C Bose (i) phosphorylase
    2. Strasburger (i) Cohesive force
    3. Dixon (iii) Crescograph
    4. Hanes (iv) Oak tree
    (a)

    1-iii , 2-iv , 3-i, 4-ii

    (b)

    1-iii, 2-iv, 3-ii, 4-i

    (c)

    1-iv, 2-iii,3-ii, 4- i

    (d)

    1-i , 2-iv , 3-ii ,4-iii

  9. Cobalt chloride strips are used to find ___________

    (a)

    Presence of stomata in leaf

    (b)

    Rate of transpiration

    (c)

    Guttation

    (d)

    All the above

  10. Over 30 types of aquaporins have been reported in ___________

    (a)

    Rice

    (b)

    Maize

    (c)

    Peas

    (d)

    Soybean

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