Transport In Plants Test 1 12/11/12

10 Questions | Total Attempts: 175

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Transportation Quizzes & Trivia

Questions and Answers
  • 1. 
    Stomata of a plant open due to:
    • A. 

      Influx of Potassium ions

    • B. 

      Efflux of Potassium ions

    • C. 

      Influx of Phosphorous ions

    • D. 

      Efflux of Phosphorous ions

  • 2. 
    The translocation of organic solutes in sieve tube members is supported by:
    • A. 

      Cytoplasmic streaming

    • B. 

      Root pressure and transpirational pull

    • C. 

      P-proteins

    • D. 

      Mass flow involving a carrier and ATP

  • 3. 
    • The continuous column of water in vessel and tracheids during the ascent of sap does not usually get broken because of:
    • A. 

      Weak gravitational pull

    • B. 

      Transpirational pull

    • C. 

      Lignified thick walls

    • D. 

      Cohesion and adhesion

  • 4. 
    Guard cells help in:
    • A. 

      Transpiration

    • B. 

      Guttation

    • C. 

      Fighting against infection

    • D. 

      Protection against grazing

  • 5. 
    The guard cells differ from other epidermal cells of the leaf in having:
    • A. 

      Mitochondria

    • B. 

      Lysosomes

    • C. 

      Chloroplasts

    • D. 

      Endoplasmic reticulum

  • 6. 
    Guttation is the result of:
    • A. 

      Diffusion

    • B. 

      Transpirational pull

    • C. 

      Osmosis

    • D. 

      Root pressure

  • 7. 
    When beet root cylinders are washed and placed in cold water, anthocyanin does not come out. This indicates that most likely plasma membrane is:
    • A. 

      Permeable to anthocyanin

    • B. 

      Impermeable to anthocyanin

    • C. 

      Differentially permeable to anthocyanin

    • D. 

      Dead structure

  • 8. 
    If the plant cell is immersed in water, the water continues to enter the cell until the _____
    • A. 

      Concentration of salts is the same inside the cell as outside

    • B. 

      Cell bursts

    • C. 

      Diffusion pressure deficit is the same inside the cell as outside

    • D. 

      Concentration of water is the same inside the cell as outside

  • 9. 
    Cohesion tension theory operates in _______.
    • A. 

      Passive absorption

    • B. 

      Active absorption

    • C. 

      Both 1 and 2

    • D. 

      None of these

  • 10. 
    Rate of water absorption can be increased through ______.
    • A. 

      Decreased transpiration

    • B. 

      Decreased ion absorption

    • C. 

      Increased photosynthesis

    • D. 

      Increased transpiration

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