The increased growth per unit time is termed as growth rate. The exponential growth can be mathematically expressed as:
1. Lt = L0 +rt
2. Lt = L0 rt
3. W1 = W0ert
4. W1 = W0 + ert
Subtopic: Â Growth |Â Growth Model |
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Match each item in Column I with the one given in Column II and select the correct match from the codes given:
Codes:
| COLUMN I | COLUMN II | ||
| A | Auxins | P | Terpenes |
| B | Gibberellins | Q | Derivatives of carotenoids |
| C | Cytokinins | R | Adenine derivative |
| D | Abscisic acid | S | Indole compounds |
| A | B | C | D | |
| 1. | S | P | R | Q |
| 2. | P | Q | S | R |
| 3. | Q | R | P | S |
| 4. | R | S | Q | P |
Subtopic: Â Growth Hormones & Auxin |
 93%
From NCERT
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Which one of the following plants does not show plasticity?
1. Maize
2. Cotton
3. Coriander
4. Buttercup
1. Maize
2. Cotton
3. Coriander
4. Buttercup
Subtopic: Â Development |
 83%
From NCERT
NEET - 2022
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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: Â Ethylene |
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NEET - 2022
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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: Â Ethylene |
 76%
From NCERT
NEET - 2022
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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: Â Differentiation, Dedifferentiation and Redifferentiation |
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From NCERT
NEET - 2022
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Which hormone is used to induce immediate stomatal closure in leaves?
1. Cytokinin
2. Gibberellin
3. Abscisic Acid
4. Auxin
Subtopic: Â Abscisic Acid |
 89%
From NCERT
NEET - 2022
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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: Â Growth Hormones & Auxin |Â Auxin Function |
 79%
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NEET - 2022
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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: Â Growth |
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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: Â Growth |
 75%
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