Q. No.Match Column I [phase of growth] and Column II [cell characteristics] and choose the correct answer from the codes given:
Column I
Column II
A.
Meristematic
a.
Increased vacuolation, new cell wall deposition
B.
Elongation
b.
Thin cellulosic wall with abundant plasmodesmatal connections
C.
Maturation
c.
Maximal wall thickening
Codes
A
B
C
1.
a
b
c
2.
b
c
a
3.
b
a
c
4.
c
b
a
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Identify the incorrect statement regarding the arithmetic growth?
| 1. | Following mitosis, both daughter cells continue to divide |
| 2. | Can be exemplified by root elongating at a constant rate |
| 3. | On plotting the length of the organ against time, a linear curve is obtained |
| 4. | Mathematically it is expressed as |
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The shape of the growth curve characteristic of a living organism growing in natural environment is:
| 1. | Linear | 2. | Sigmoid |
| 3. | Hyperbola | 4. | Bell shaped |
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Plant growth and further development is intimately linked to water status of the plant because:
A. Turgidity of cells helps in extension growth
B. It provides medium for enzymatic activity
1. Both A and B are correct
2. Only A is correct
3. Only B is correct
4. Both A and B are incorrect
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The optimum temperature range for proper growth in most plants is:
| 1. | \(0^\circ C - 100^\circ C\) | 2. | \(15^\circ C - 20^\circ C\) |
| 3. | \(28^\circ C - 30^\circ C\) | 4. | Greater than \(45^\circ C\) |
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Consider the given diagram and select the correct inference:
| 1. | Both leaves have shown different absolute growths |
| 2. | First leaf has exhibited growth but second leaf has not as it is already senescent |
| 3. | The relative growth of first leaf is more than that of the second leaf |
| 4. | Both leaves have exhibited equal relative growths |
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To differentiate into a tracheary element, a cell would:
1. Gain protoplasm
2. Become multinucleate
3. Assimilate lot of collagen and elastin
4. Develop lignocellulosic secondary cell wall
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Formation of interfascicular cambium and cork cambium is possible most importantly because of:
| 1. | Differentiation | 2. | Dedifferentiation |
| 3. | Redifferentiation | 4. | Reverse differentiation |
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The growth in plants can be best expressed as [refer Section 15.2]:
| 1. Open | 2. Determinate |
| 3. Closed | 4. Redundant |
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Development is a term that includes all changes that a plant goes through during its life cycle:
1. till germination of the seed
2. during its vegetative growth
3. from germination till flowering
4. from germination to senescence
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