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Q. No.The gaseous plant growth regulator is used in plants to:
1.
kill dicotyledonous weeds in the fields
2.
speed up the malting process
3.
promote root growth and root hair formation to increase the absorption surface
4.
help overcome apical dominance
Subtopic: Ethylene |
74%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in plants?
| 1. | Cytokinin | 2. | ABA |
| 3. | Gibberellin | 4. | Ethylene |
Subtopic: Ethylene |
76%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The living differentiated cells, that lost the capacity to divide anymore, can regain the capacity of division under certain conditions. This phenomenon is termed as:
| 1. | Redifferentiation | 2. | Maturation |
| 3. | Differentiation | 4. | Dedifferentiation |
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
73%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Which hormone is used to induce immediate stomatal closure in leaves?
1. Cytokinin
2. Gibberellin
3. Abscisic Acid
4. Auxin
Subtopic: Abscisic Acid |
89%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Removal of apical dominance by decapitation is utilised for:
1. Suppressing the activity of intercalary meristem
2. Early senescence
3. Hedge making
4. Preparing weed-free lawns
Subtopic: Growth Hormones & Auxin | Auxin Function |
79%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Growth:
1. is defined as an irreversible permanent increase in size of an organ or its parts or even an individual cell
2. Is accompanied by metabolic processes, both catabolic and anabolic
3. Is accompanied only by anabolism
4. More than one option is correct
1. is defined as an irreversible permanent increase in size of an organ or its parts or even an individual cell
2. Is accompanied by metabolic processes, both catabolic and anabolic
3. Is accompanied only by anabolism
4. More than one option is correct
Subtopic: Growth |
75%
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Increased vacuolation, cell enlargement and new cell wall deposition are the characteristics of the cells of :
1. Elongation phase
2. Meristematic phase
3. Maturation phase
4. Differentiation phase
1. Elongation phase
2. Meristematic phase
3. Maturation phase
4. Differentiation phase
Subtopic: Growth |
75%
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The arithmetic growth is exemplified by:
1. A root elongating at a constant rate
2. The equation, \(L_t = L_0 + rt\)
3. A linear curve is obtained graphically when the length of an organ is plotted against time
4. All of the above
1. A root elongating at a constant rate
2. The equation, \(L_t = L_0 + rt\)
3. A linear curve is obtained graphically when the length of an organ is plotted against time
4. All of the above
Subtopic: Growth Model |
91%
From NCERT
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The exponential growth and arithmetic growth can be respectively expressed as:
1. \(W_1 = W_0e^{rt} ~, ~ L_t = L_0 +rt\)
2. \(L_t =L_0 +rt , W_1 = W_0e^{rt} \)
3. \(W_1 = W_0e^{rt} + L_0~, ~ L_t = rt+ W_0e^{rt}\)
4. \(W_1 = W_0e^{rt} ~, ~ W_1 = e^{rt}\)
1. \(W_1 = W_0e^{rt} ~, ~ L_t = L_0 +rt\)
2. \(L_t =L_0 +rt , W_1 = W_0e^{rt} \)
3. \(W_1 = W_0e^{rt} + L_0~, ~ L_t = rt+ W_0e^{rt}\)
4. \(W_1 = W_0e^{rt} ~, ~ W_1 = e^{rt}\)
Subtopic: Growth | Growth Model |
89%
From NCERT
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The sigmoid growth and arithmetic growth can be represented graphically, respectively, as:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Growth Model |
91%
From NCERT
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