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Q. No.Growth of an organ is defined as
1. Infinite increase in size
2. Irreversible increase in size
3. Reversible increase in size
4. Infinite and reversible increase in size
Subtopic: Growth |
89%
From NCERT
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Which type of cells have the capacity of self-perpetuation?
1. Meristematic cells
2. Companion cells is
3. Sieve cells
4. Parenchyma cells
1. Meristematic cells
2. Companion cells is
3. Sieve cells
4. Parenchyma cells
Subtopic: Growth |
89%
From NCERT
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Subtopic: Growth |
89%
From NCERT
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Increase in the girth of plant is known as/done by
1. Primary growth
2. Apical meristem
3. intercalary meristem
4. Secondary growth
1. Primary growth
2. Apical meristem
3. intercalary meristem
4. Secondary growth
Subtopic: Growth |
75%
From NCERT
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Which parameter is used to measure the growth in flat organs like leaves?
1. Increase in dry weight
2. Increase in cell size
3. Increase in surface area
4. Increase in length
1. Increase in dry weight
2. Increase in cell size
3. Increase in surface area
4. Increase in length
Subtopic: Growth |
85%
From NCERT
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Which of the following is difficult to measure directly?
1. Increase in protoplasm content
2. Increase in surface area
3. Increase in dry weight
4. Increase in volume
1. Increase in protoplasm content
2. Increase in surface area
3. Increase in dry weight
4. Increase in volume
Subtopic: Growth |
90%
From NCERT
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Deposition of new materials inside the cell wall of cells starts in
1. Meristematic phase
2. Reproductive phase
3. Maturation phase
4. Elongation phase
1. Meristematic phase
2. Reproductive phase
3. Maturation phase
4. Elongation phase
50%
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Which phase of a sigmoid curve explains the initial phase of growth when growth rate is very slow?
1. Log phase
2. Lag phase
3. stationary phase
4. Maturation phase
1. Log phase
2. Lag phase
3. stationary phase
4. Maturation phase
76%
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__________ curve is obtained for cells in culture.
1. J-shaped
2. Linear
3. V-shaped
4. S-shaped
1. J-shaped
2. Linear
3. V-shaped
4. S-shaped
70%
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A Leaf of 20 cm2 grows 5 cm2 per hour and B Leaf of 25 cm2 grows 5 cm2 per hour
The relative growth rate of leaf A and B respectively is
1. 25% and 20%
2. 20% and 25%
3. 50% and 100%
4. 25% and 50%
The relative growth rate of leaf A and B respectively is
1. 25% and 20%
2. 20% and 25%
3. 50% and 100%
4. 25% and 50%
65%
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