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MCQs

Total Questions : 81 | Page 8 of 9 pages
Question 71. Soil is the complex medium.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 72. What are lenticels?
  1.    Epidermal structure
  2.    A wax layer of leaves
  3.    Opening in the bark
  4.    Channel to transfer water
 Discuss Question
Answer: Option C. -> Opening in the bark
Answer: (c).Opening in the bark
Question 73. Mark the one, which is NOT the characteristics of the guard cell?
  1.    Thickened inner wall
  2.    Connected end to end
  3.    Does not have chloroplast
  4.    Radial micellation
 Discuss Question
Answer: Option C. -> Does not have chloroplast
Answer: (c).Does not have chloroplast
Question 74. Stomata acts as turgor-operated valves?
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 75. Which light modulates osmoregulation of guard cell?
  1.    Green
  2.    Orange
  3.    Red
  4.    Blue
 Discuss Question
Answer: Option D. -> Blue
Answer: (d).Blue
Question 76. How much percentage of total transpiration is done by stomata?
  1.    5-10
  2.    90
  3.    1-5
  4.    60
 Discuss Question
Answer: Option B. -> 90
Answer: (b).90
Question 77. What is guttation?
  1.    Exudation of xylem sap
  2.    Root pressure
  3.    Radial movement
  4.    Field capacity
 Discuss Question
Answer: Option A. -> Exudation of xylem sap
Answer: (a).Exudation of xylem sap
Question 78. Those elements whose absence prevent plants from completing its life cycle are called___________
  1.    Micro element
  2.    Macro element
  3.    Nonessential elements
  4.    Essential elements
 Discuss Question
Answer: Option D. -> Essential elements
Answer: (d).Essential elements
Question 79. Name the specialized pores from where guttation takes place.
  1.    Stomata
  2.    Hydathodes
  3.    Guard cell
  4.    Lenticels
 Discuss Question
Answer: Option B. -> Hydathodes
Answer: (b).Hydathodes
Question 80. Which one of the following is NOT a criteria for an element to be called as essential?
  1.    These elements need not to take part in growth and development
  2.    The function of an element must not be replaceable
  3.    The element should be involved in plant metabolism
  4.    A plant cannot complete its life cycle without these elements
 Discuss Question
Answer: Option A. -> These elements need not to take part in growth and development
Answer: (a).These elements need not to take part in growth and development

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