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MCQs

Total Questions : 81 | Page 4 of 9 pages
Question 31. Name the first naturally occurring cytokines.
  1.    Neoxanthin
  2.    Xanthoxin
  3.    Zeatin
  4.    Isopentenyl adenine
 Discuss Question
Answer: Option C. -> Zeatin
Answer: (c).Zeatin
Question 32. Which of the following plant hormone causes a delay in leaf senescence?
  1.    Abscisic acid
  2.    Ethylene
  3.    Auxin
  4.    Cytokines
 Discuss Question
Answer: Option D. -> Cytokines
Answer: (d).Cytokines
Question 33. Light dependent changes in plant’s growth and development apart from photosynthesis is known as___________
  1.    Phytochrome
  2.    Dark reaction
  3.    Light reaction
  4.    Photomorphogenesis
 Discuss Question
Answer: Option D. -> Photomorphogenesis
Answer: (d).Photomorphogenesis
Question 34. Name the red light sensitive system?
  1.    Phytochrome
  2.    Cryptochrome
  3.    Phototropin
  4.    Xanthophyll
 Discuss Question
Answer: Option A. -> Phytochrome
Answer: (a).Phytochrome
Question 35. Deficiency in which of the following hormone causes dwarfism in the plant?
  1.    Ethylene
  2.    Abscisic acid
  3.    Gibberellin
  4.    Brassinosteroid
 Discuss Question
Answer: Option D. -> Brassinosteroid
Answer: (d).Brassinosteroid
Question 36. Name the stress hormone of the plant.
  1.    Brassinosteroid
  2.    Abscisic acid
  3.    Cytokines
  4.    Ethylene
 Discuss Question
Answer: Option B. -> Abscisic acid
Answer: (b).Abscisic acid
Question 37. Name the pigment, which is responsible for red color light?
  1.    Chlorophyll
  2.    Bilirubin
  3.    Chromophore
  4.    Xanthophyll
 Discuss Question
Answer: Option C. -> Chromophore
Answer: (c).Chromophore
Question 38. Which of the following does NOT belongs to the phytochrome gene family?
  1.    PHY B
  2.    PHY B
  3.    PHY C
  4.    PHY F
 Discuss Question
Answer: Option D. -> PHY F
Answer: (d).PHY F
Question 39. Which of the following is NOT the function of cytochromes?
  1.    Inhibition of stem elongation
  2.    Stimulation of leaf expansion
  3.    Seed germination
  4.    Regulation of floral initiation
 Discuss Question
Answer: Option C. -> Seed germination
Answer: (c).Seed germination
Question 40. Name the blue light photoreceptor of the plant?
  1.    Photochrome
  2.    Cryptochrome
  3.    Phototropin
  4.    Vernalin
 Discuss Question
Answer: Option B. -> Cryptochrome
Answer: (b).Cryptochrome

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