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11th Standard Botany - Photosynthesis 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. Assertion (A): Increase in Proton gradient inside lumen responsible for ATP synthesis
    Reason (R): Oxygen-evolving complex of PS I located on thylakoid membrane facing Stroma, releases H+ ions

    (a)

    Both Assertion and Reason are True.

    (b)

    Assertion is True and Reason is False.

    (c)

    Reason is True and Assertion is False.

    (d)

    Both Assertion and Reason are False.

  2. Identify true statement regarding the light reaction of photosynthesis?

    (a)

    Splitting of water molecule is associate with PS I.

    (b)

    PS I and PS II involved in the formation of NDPH + H+

    (c)

    The reaction center of PS I is Chlorophyll a with the absorption peak at 680 nm.

    (d)

    The reaction center of PS II is Chlorophyll a with the absorption peak at 700 nm.

  3. The photosynthetic pathway is represented in a schematic representation. Mark the correct option.

    (a)

    It represents cactus plants where A occurs in the mesophyll & B in the bundle sheath cells

    (b)

    It represents sugarcane plants where A occurs in the mesophyll & B in the bundle sheath cells

    (c)

    It represents pineapple plants where both A & B occur in the mesophyll cells

    (d)

    It represents maize plants where A & B are separated only temporarily

  4. The correct sequence of ftow of electrons in the light reaction is

    (a)

    PS II, plastoquinone, cytochrome, PSI, ferredoxin

    (b)

    PS I, plastoquinone, cytochrome, PS II ferredoxin

    (c)

    PS II, ferredoxin, plastoquinone, cytochrome, PSI

    (d)

    PS I, plastoquinone, cytochrome, PS II ferredoxin

  5. The creation of proton gradient across the thylakoid membrane is a result of

    (a)

    Decrease in proton number in stroma

    (b)

    Accumulation of protons in the lumen

    (c)

    Decrease in pH in the lumen

    (d)

    All of the above

  6. Identify incorrect pair regarding C4 cycle.

    (a)

    Initial carboxylation - mesophyll cells

    (b)

    Primary CO2 acceptor - PEP

    (c)

    First product - OAA

    (d)

    Bundle sheath cells - with granum

  7. The intermediate from kreb's cycle which is used for chlorophyll production is___________. 

    (a)

    Fumaric acid

    (b)

    Isocitric acid

    (c)

    Succinic acid

    (d)

    oxaloacetic acid

  8. RUBISCO constitutes______________ of chloroplast protein.

    (a)

    17%

    (b)

    20%

    (c)

    16%

    (d)

    21 %

  9. Kranz anatomy is characteristic of _________ plants.

    (a)

    C3

    (b)

    C2

    (c)

    C4

    (d)

    C3 and C4

  10. _____________is considered to be a promising source of energy in future.

    (a)

    CNG

    (b)

    LPG

    (c)

    Methane

    (d)

    Hydrogen

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