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MCQs

Total Questions : 572 | Page 6 of 58 pages
Question 51. Lowering of leaves in evening and raising them in morning are regarded as
  1.    chemo tactic movement
  2.    photo tactic movement
  3.    sleep movements
  4.    rapid movements
 Discuss Question
Answer: Option C. -> sleep movements
Answer: (c).sleep movements
Question 52. Leaves of mimosa results form a rapid loss of its turgor in time period of
  1.    1-2 seconds
  2.    2-3 seconds
  3.    3-4 seconds
  4.    4-5 seconds
 Discuss Question
Answer: Option A. -> 1-2 seconds
Answer: (a).1-2 seconds
Question 53. Chemotactive movements response towards stimulus of
  1.    light
  2.    heat
  3.    chemicals
  4.    All of the Above
 Discuss Question
Answer: Option C. -> chemicals
Answer: (c).chemicals
Question 54. Sensilla are specialized modification of exoskeleton for exchange of
  1.    body fluid
  2.    gases
  3.    nitrogenous waste
  4.    oxygen
 Discuss Question
Answer: Option B. -> gases
Answer: (b).gases
Question 55. Example of animals bearing special shell composed of calcium crystals
  1.    marine bivalvia
  2.    molluscus
  3.    ant
  4.    snails
 Discuss Question
Answer: Option A. -> marine bivalvia
Answer: (a).marine bivalvia
Question 56. Photo tactic movement helps chloroplast to retain maximum light for
  1.    oxygen fixation
  2.    CO2 fixation
  3.    water fixation
  4.    nitrogen fixation
 Discuss Question
Answer: Option B. -> CO2 fixation
Answer: (b).CO2 fixation
Question 57. Shoots follow growth movements which is
  1.    negative hydrotropism
  2.    positive hydrotropism
  3.    static hydrotropism
  4.    neutral hydrotropism
 Discuss Question
Answer: Option B. -> positive hydrotropism
Answer: (b).positive hydrotropism
Question 58. Turgor pressure keeps plant rigid and resistant to
  1.    heat
  2.    bending
  3.    insects
  4.    light
 Discuss Question
Answer: Option B. -> bending
Answer: (b).bending
Question 59. Vascular bundles possesses bundle cap to strengthened additionally in
  1.    balsam
  2.    venus fly trap
  3.    sun flower
  4.    rose
 Discuss Question
Answer: Option C. -> sun flower
Answer: (c).sun flower
Question 60. Sclerenchymatous cells are heavily lignified cells in
  1.    xylem
  2.    phloem
  3.    cortex
  4.    cuticle
 Discuss Question
Answer: Option A. -> xylem
Answer: (a).xylem

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