Q. No.Natural Cytokinins are not found in
1.Root apices
2.Developing shoot buds
3.Young Fruits
4.Root hair zone
Cytokinins
1. Helps to produce new leaves
2. Helps to produce chloroplasts in leaves
3. Lateral shoot growth, Adventitious Shoot Formation
4. All of these
Cytokinin
Which of the following is not correct?
(1) Help to overcome apical dominance
(2) They promote nutrient mobilisation and helps in the delay of leaf senescence
(3) Lateral Shoot Growth
(4) Formation of Tap root
Which of the following hormones is synthesised in large amounts by tissues undergoing senescence and ripening fruits?
(1) Ethylene
(2) ABA
(3) Auxins
(4) GA3
Influences of Ethylene in plants do not include
(1) Horizontal growth of seedlings
(2) Swelling of the axis
(3) Apical hook formation in dicot seedlings
(4) Lateral shoot growth
Ethylene does not perform
(1) Promotes senescence and abscission of plant organs especially of leaves and flowers
(2) Highly effective in fruit ripening
(3) Enhances the respiration rate during ripening of the fruits
(4) Overcome the apical dominance
The rise in respiration rate of fruit is called
(1) Respiratory quotient
(2) Respiratory climactic
(3) Respiratory incision
(4) Respiratory succulence
The function which is not performed by Ethylene is
(1) Breaking of seed and bud dormancy
(2) Initiates germination in peanut seeds
(3) Improving the internode length of sugarcane
(4) Promotes rapid internode and petiole elongation in deep water rice plants
Sprouting of potato, helping the leaves or upper parts of the rice shoot to remain above water, promotes root growth and root hair formation and helping plants to increase their absorption surface. Which of the following hormones is involved in such physiological effects?
(1) Ethylene
(2) ABA
(3) GA
(4) Auxins
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