81. Which of the following is responsible for seed dormancy ?
82. Name the hormone responsible for activity of chlorophyll in leaves.
83. Which of the following is simple, volatile hormone ?
84. Which of the following statement about ABA is inappropriate ?
A. Induces ripening of fruit
B. Inhibits seed germination
C. Induces dormancy of bud
D. Closes stomata
Answer : Option A
85. Which hormone is absent in dormnant seed ?
86. Which of the following statement is true for abscisic acid ?
A. Inhibits transcription of gene
B. Opens stomata
C. Reduces senescence
D. Acts as weedicide
Answer : Option A
87. By which physiological process water enters into seed coats of seed ?
88. What is called the effect of daylight on plant ?
89. Which of the following is correct option for seed germination ?
A. Emergance of radicle from primary root
B. Emergance of primary root forms from radicle
C. Development of primary root
D. No root formation
Answer : Option B
90. What is the rate of respiration during seed germination ?