Quiz  /  NEET MCQ On Photoperiodism and Vernalization

  • 1. 
    ______ influences the process of flowering in plants

  • Photoperiod
  • Water in the soil
  • The acidity of the soil
  • Amount of green pigment

  • 2. 
    Phytochrome is a  photosensitive pigment involved in _________

  • Geotropism
  • Phototropism
  • Photoperiodism
  • Photorespiration

  • 3. 
    phytochrome, the blue-green pigment is found?

  • Algae
  • Fungi
  • Flowering plants
  • Vascular cryptograms

  • 4. 
    The change over from vegetative to reproductive phase in plants takes place in response to______

  • Length of the day
  • severity of temperature
  • Oxygen content in the air
  • mainly the food material available in the soil

  • 5. 
    The reversal of etiolation effected by light is called______

  • Photomorphogenesis
  • Richmond Lang effect
  • Anisotropic wall expansion
  • Red-far red light interaction

  • 6. 
    A plant that require not less than 10 hours of light to flower is called ______

  • Day-neutral plant
  • Short day plant
  • Long day plant
  • None of the above

  • 7. 
    Which of the following hormone can replace vernalization?

  • Auxin
  • Ethylene
  • Cytokinins
  • Gibberellins

  • 8. 
    When the dark period of short-day plants is interrupted by brief exposure of light, then the plant ______

  • Produces more flowers
  • Will not bear any flowers
  • Turns into a long day plant
  • Produces flowers immediately

  • 9. 
    Which of the following pigment involved in red-far red light interconversion?

  • Cytochrome
  • Lycopene
  • Phytochrome
  • Xanthophyll

  • 10. 
    Cholodny-Went theory is based on________

  • Phototropism
  • Photoperiodism
  • Photorespiration
  • Photomorphogenesis
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