Photosynthesis in Higher Plants

Multiple Choice Questions

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The specific character of C4  plants is

  • bulliform cells

  • Kranz anatomy

  • parallel venation

  • isobilateral leaf

B.

Kranz anatomy

The C4 plants have Kranz anatomy. The vascular bundle of the leaf is surrounded by one or more layer of chloroplast, containing cells (bundle sheath cells). The bundle sheath cells lack grana in their chloroplast while mesophyll cells have well developed grana. The mesophyll cells are specialized for light reaction and initial CO2 fixation during photosynthesis. The CO2 is finally fixed inside bundle sheath cell through Calvin cycle.

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    Which one of the following contain agranal chloroplasts?

    • C3 plants

    • Succulants

    • C4 plants

    • Hydrophytes

    Answer

    Law of limiting factor was given by

    • Leibig

    • Blackman

    • Calvin

    • Arnon

    Answer

    In CAM plants, CO2 acceptor is

    • RuBP

    • PEP

    • OAA

    • PGA

    Answer

    Most effective wavelength of light photosynthesis is :

    • green

    • violet

    • red

    • yellow

    Answer
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    Photosynthetic bacteria have :

    • pigment system I (only one pigment system)

    • pigment system II

    • both (a) and (b)

    • some other type

    Answer

    Active K+ exchange mechanism for opening and closing of stomata was given by

    • Darwin

    • Levit

    • Scarth

    • Khorana

    Answer

    For synthesis of one hexose sugar, how many times Calvin cycle is turned ?

    • 12

    • 2

    • 6

    • 3

    Answer

    The number of chlorophyll molecules in a quantasome is

    • 50- 100

    • 200- 250

    • 300- 400

    • 500- 600

    Answer
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    C4 plants, synthesis of sugars/final CO2 fixation occurs in:

    • palisade cells

    • spongy cells

    • undifferentiated mesophyll cells

    • bundle sheath cells

    Answer
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