Q. No.All the following regarding parenchyma tissue in plants are correct except:
1.
Cells are generally isodiametric
2.
Cell walls are generally thick
3.
Cell walls are made of cellulose
4.
They perform photosynthesis, storage and secretion
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The type of vascular bundles shown in the given figure would most likely be seen in:
| 1. | Dicotyledonous stem | 2. | Roots |
| 3. | Monocotyledonous stem | 4. | Leaves |
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All the following regarding collenchyma tissue in plants are correct except:
| 1. | It occurs below the epidermis of stem and leaves in most monocots |
| 2. | It is found either as a homogenous layer or in patches |
| 3. | Cells are much thickened at the corners |
| 4. | Intercellular spaces are absent |
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All the following regarding sclerenchyma tissue in plants are correct except:
| 1. | Cells have thick lignified walls |
| 2. | Cells are usually dead and without protoplasts |
| 3. | It provides mechanical support to plant organs |
| 4. | It can assimilate food when it contains chloroplasts |
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The vascular bundles in a dicot stem are:
| 1. | conjoint, open with endarch protoxylem |
| 2. | conjoint, closed with endarch protoxylem |
| 3. | conjoint, open with exarch protoxylem |
| 4. | conjoint, closed with exarch protoxylem |
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What would be true for A and B shown in the given diagram?
| 1. | A shows open stomatal aperture while B shows closed stomatal aperture |
| 2. | A shows closed stomatal aperture while B shows open stomatal aperture |
| 3. | A shows the stomata in grasses |
| 4. | B shows the stomata in grasses |
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Match the plants with the parts where sclereids are commonly found in them:
|
Plants |
Parts |
||
| A. |
Nuts |
a. |
Fruit walls |
| B. |
Sapota |
b. |
Pulp of fruit |
| C. |
Legumes |
c. |
Seed coat |
| D. |
Tea |
d. |
Leaves |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | d | c |
| 3. | b | d | c | a |
| 4. | d | c | b | a |
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Complex tissues in a plant:
1. are composed of one type of cell performing same function
2. are composed of one type of cell performing different functions
3. are composed of more than one type of cells working together as a unit
4. are composed of more than one type of cells working independently of each other
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Phloem in angiosperms is composed of all the following except:
| 1. | Sieve cells | 2. | Companion cells |
| 3. | Phloem parenchyma | 4. | Phloem fibers |
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The nucleus of companion cells controls the functions of:
1. Sieve cells
2. Sieve tubes
3. Albuminous cells
4. Phloem parenchyma
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