Quiz  /  NEET MCQ on Plant Movement

  • 1. 
    If the stem grows towards sunlight and root grows just opposite to it, the stem movement is known as

  • phototropic movement
  • negative phototropic movement
  • positive phototropic movement
  • none of these

  • 2. 
    An apparatus commonly used to demonstrate phototropism is

  • clinostat
  • heliotropic chamber
  • photometer
  • arc auxanometer

  • 3. 
    Protoplasmic streaming movements are referred to as

  • photonasty
  • thigmonasty
  • autonomic movements of locomotion
  • movements of curvature

  • 4. 
    Tertiary roots are

  • negatively geotropic
  • ageotropic
  • positively geotropic
  • plagiogeotropic

  • 5. 
    The best material for demonstrating streaming movements of protoplasm within living cells is

  • pith cells
  • onion peelings
  • staminal hairs of Tradescantia
  • None of these

  • 6. 
    Pneumatophores show

  • thigmotropism
  • negative phototropism
  • negative geotropism (ageotropism)
  • positive geotropism

  • 7. 
    Factors that modify geotropic responses are

  • root and shoot apices, humidity and temperature
  • root and shoot apices, phytochrome, humidity and temperature
  • root and shoot apices, temperature, light and atmospheric carbon dioxide
  • none of these

  • 8. 
    In Drosera, movement of tentacles are

  • Thermonastic
  • Photonastic
  • Seismonastic
  • Thigmonastic

  • 9. 
    Nastic movements differ from tropic movements in being

  • Nondirectional
  • Movements of variation
  • Stimulated by chemicals
  • Directional

  • 10. 
    Movements of leaves of the sensitive plant, Mimosa pudica are due to

  • seismonasty
  • chemonasty
  • thermonasty
  • hydrotropism
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