61. Cytokinin is formed in which of the following region ?
A. Region of cell elongation
B. Regions of senescence
C. Regions of cell division
D. Regions of abscission
Answer : Option C
62. Which hormone reduces the dominance of apical bud ?
63. Which is incorrect option for cytokinin ?
A. Retards senescence
B. Secreted in the region of active cell division
C. Increases dominance of apical bud
D. Stimulates cell division
Answer : Option C
64. Drooping of fruit, after fruit maturation (ripening) shows ........ .
A. Increase in amount of auxin
B. Decreases in amount of auxin
C. Reduces in amount of ABA
D. ncrease gibberrelic acid
Answer : Option B
65. Which of the following is mismatched statement for effect of auxin ?
A. It inhibits lateral growth
B. It induces stem elongation in plant
C. It induces cell division
D. It helps in further elongation of some regions
Answer : Option D
66. Which hormore is essential for initial growth of root ?
67. Which is the specific use of synthetic auxin in higher concentration ?
A. Weedicide
B. Inhibits growth of lateral buds
C. Inhibits initial process of root formation
D. Regulates cell elongation
Answer : Option A
68. Which of the following organic chemical is synthetic ?
69. Which is required to inhibit germination of food storing part of potato ?
70. This hormone induces growth of root but inhibits growth of .......
A. Apical bud
B. Unfertilized fruit developement
C. Lateral buds
D. Root
Answer : Option C