Quiz  /  NEET MCQ on Apoplast

  • 1. 
    In plants, water movement is

  • up the potential gradient in both symplast and apoplast
  • down the potential gradient in apoplast and up the potential gradient in symplast
  • down the potential gradient in both symplast and apoplast
  • down a potential gradient in symplast and up the potential gradient in apoplast

  • 2. 
    Pick the incorrect statement regarding apoplast movement

  • movement of water is through mass flow
  • gradient-dependant
  • mass flow of water takes place as a result of cohesive and adhesive properties of
  • continuous water stream gets tension when water is absorbed by root hairs

  • 3. 
    In roots, most of the water flows through

  • Symplast
  • Apoplast
  • Imbibition
  • Active transport

  • 4. 
    Movement of water through apoplast stops at the level of ________ and crosses membrane to undergo symplast till xylem cells

  • starch sheath
  • inner layer of cortex
  • endodermis
  • all of the above

  • 5. 
    In plants, this about apoplast and symplast water movement is true

  • being down a potential gradient
  • an equal rate of transport
  • conduction through interconnected protoplasts
  • assistance by cytoplasmic streaming

  • 6. 
    Pressure in roots develops due to

  • low osmotic soil potential
  • rise in transpiration
  • active absorption
  • passive absorption

  • 7. 
    Which of the following statements does not hold true in context of apoplast?

  • occurs through intercellular spaces and cell walls
  • system of adjacent cell walls is continuous all through the plant
  • crosses cell membrane
  • discontinuous path at the place of casparian strips of endodermis in roots

  • 8. 
    This is not part of apoplast

  • cell walls
  • vessels
  • intercellular spaces
  • sieve tubes

  • 9. 
    Symplastic movement is slower than apoplastic movement because

  • molecule has to enter through cell membrane
  • it is down the gradient
  • as it involves cytoplasmic streaming always
  • all of the above

  • 10. 
    Most of the movement in roots through apoplast is due to

  • endodermal cells are loosely packed and hence no resistance to water movement
  • medullary cells are loosely packed and hence no resistance to water movement
  • cortical cells are loosely packed and hence no resistance to water movement
  • pericycle cells are loosely packed and hence no resistance to water movement
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