Quiz  /  NEET Parts of Plants MCQ Quiz

  • 1. 
    Which of the following factors promotes the opening of the stomatal aperture?

  • A decrease in guard cell turgidity
  • When the outer walls of the guard cells contracts
  • Radial orientation of the cellulose microfibrils in the cell wall of the guard cells
  • The longitudinal orientation of the cellulose microfibrils in the cell wall of guard cells

  • 2. 
    Which of the following is made of dead cells?

  • Phloem
  • Phellem
  • Collenchyma
  • Xylem parenchyma

  • 3. 
    Which of the following statement are true about the Tyloses – the balloon-shaped structures?

  • Characterise the sapwood
  • Original in the lumen of vessels
  • Are linked to the ascent sap through xylem vessels
  • Are extensions of the xylem parenchyma cells into vessels

  • 4. 
    Which of the following events takes place in a ring girdled plant?

  • The eath of the root first
  • The death of the shoot first
  • The shoots and the root dies first
  • Neither the shoot nor the root will die

  • 5. 
    This is one of the most recent and valid explanations for stomatal movements

  • Starch hydrolysis
  • Transpiration
  • Guard cell photosynthesis
  • Potassium efflux and the influx

  • 6. 
    Which of the following are the primary water-conducting elements of xylem in gymnosperms?

  • Fibres
  • Vessels
  • Tracheids
  • Transfusion tissue

  • 7. 
    Which of the following is not a lateral meristem?

  • Phellogen
  • Cork cambium
  • Intercalary meristem
  • Interfascicular cambium

  • 8. 
    In monocots, grafting is not possible as _________

  • They show parallel venation
  • they have scattered vascular bundles
  • they lack cambium
  • they are herbaceous

  • 9. 
    Vascular bundles are closed in monocots as:

  • presence of vascular cambium between xylem and phloem
  • presence of xylem and phloem
  • absence of vascular cambium
  • xylem and phloem occur in separate bundles

  • 10. 
    Difference between heartwood and sapwood is that heartwood

  • shows the presence of fibres and rays
  • has dead and non-conducting elements
  • lacks parenchyma and vessels
  • is susceptible to pathogens and pests
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