System Physiology - Plant-Plant Hormones [CSIR (Council of Scientific & Industrial Research) Life Sciences]: Questions 1 - 3 of 27
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Question 1
Appeared in Year: 2016
Question MCQ▾
Which one of the following plant hormones use the two-component histidine kinase receptor system for signal transduction? (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | Cytokinin | |
b. | Gibberellin | |
c. | Auxin | |
d. | Abscisic acid |
Question 2
Appeared in Year: 2012
Question MCQ▾
Following are certain facts about the effect of abscisic acid (ABA) on the development and physiological effect of plants: (June)
1. ABA promotes leaf senescence independent of ethylene
2. ABA promotes the shoot growth and inhibits root growth at low water potential.
3. ABA inhibits gibberllin induced enzyme production
4. Seed dormancy is controlled by ratio of ABA and gibberllin
Which one of the following combination of above statement is true?
Choices
Choice (4) | Response | |
---|---|---|
a. | 1,3 and 4 | |
b. | 1,2 and 3 | |
c. | 1,2 and 4 | |
d. | 2,3 and 4 |
Question 3
Appeared in Year: 2011
Question MCQ▾
Following are some statements regarding plant growth hormones. (December)
1. Ethylene regulates abscission
2. Gibberlines do not play role in flowering
3. Auxin and cytokinin promote cell division
4. Over expression of cytokinin oxidase would promote root growth
5. ABA inhibits root growth and promotes shoot growth at low water potential.
6. ABA promotes leaf senescence independent of ethylene
Which one of the following combination of above statement is correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | 2,3 & 4 | |
b. | 1,3 & 6 | |
c. | 2,4 & 5 | |
d. | 4,5 & 6 |