Biology Support and Movement Chapter No.2 Online MCQs 2nd Year

Biology 2nd Year
MCQs

Chapter No.2
Support and Movement

11. The scale, iatous cells which are found in seed coats & nut shells are

  • Phototropism
  • Thigmotropism
  • Chemotropism
  • Geotropism

Answer:
Chemotropism

12. The vas ibium lies between

  • Epidermis
  • Cortex
  • Pith
  • Xylem

Answer:
Pith




13. Turgor pressure is generated mainly by osmotic pressure of Plant Movements

  • Vascular cambium
  • Cork cambium
  • Vascular cambium & Cork cambium
  • None of these

Answer:
Cork cambium

14. Which is not true for auxins?

  • Vessels
  • fibers
  • sclereides
  • trachieds

Answer:
Sclereides




15. Nastic movements are due to balance between

  • Primary and secondary xylem
  • Cork and phloem
  • Primary Phloem and Secondary Xylem
  • Secondary Phloem and Secondary Xylem

Answer:
Primary Phloem and Secondary Xylem

16. Which one of following is non-directional plant movement?

  • Cell cytosol
  • Cell vacuoles
  • Cell cytosol & Cell vacuoles
  • None of these

Answer:
Cell cytosol & Cell vacuoles



17. Which is not true for pulvinus

  • Positive gravitropism of roots
  • Negative gravitropism of Stem
  • It is for hyponasty
  • Causes bending in Oxygen

Answer:
Causes bending in Oxygen

18. The movement of part of plant in response to stimulus of light

  • Auxins and cytokines
  • Abscisic and auxins
  • Gibberalin and abscisic
  • Cytokines and gibberalin

Answer:
Auxins and cytokines




19. The movement in response to some chemical is called

  • Paratonic movements
  • Tropic movements
  • Nastic movements
  • All of these

Answer:
Nastic movements

20. Opening and closing of flowers due to light intensity is termed

  • Haptonasty
  • Thermonasty
  • Photonasty
  • Phototropic

Answer:
Photonasty

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