Q. No.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
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
Phloem in angiosperms is composed of all the following except:
| 1. | Sieve cells | 2. | Companion cells |
| 3. | Phloem parenchyma | 4. | Phloem fibers |
The nucleus of companion cells controls the functions of:
1. Sieve cells
2. Sieve tubes
3. Albuminous cells
4. Phloem parenchyma
Phloem fibers [bast fibers] are:
| 1. | made up of collenchyma and generally not seen in primary phloem |
| 2. | made up of collenchyma and generally not seen in secondary phloem |
| 3. | made up of sclerenchyma and generally not seen in primary phloem |
| 4. | made up of sclerenchyma and generally not seen in secondary phloem |
Which of the following components of the phloem tissue in angiosperms loses protoplasm and becomes dead at maturity?
| 1. Sieve tube elements | 2. Companion cells |
| 3. Phloem parenchyma | 4. Phloem fibers |
The incorrect statement regarding epidermal tissue system in angiosperms would be:
| 1. | It comprises of epidermal cells and stomata but not the appendages such as trichomes |
| 2. | It is the outermost layer of the primary plant body forming a continuous layer |
| 3. | It is usually single layered |
| 4. | Cells are parenchymatous with a large vacuole |
The meristem that helps grasses regenerate parts removed by the grazing herbivores is the:
| 1. | Shoot apical meristem | 2. | Root apical meristem |
| 3. | Intercalary meristem | 4. | Lateral meristem |
Mesophyll cells present in the ground tissue of leaves are:
| 1. | chloroplasts lacking thin walled cells |
| 2. | chloroplasts containing thick walled cells |
| 3. | chloroplasts containing thin walled cells |
| 4. | chloroplasts lacking thick walled cells |
Open vascular bundles:
| I: | have cambium present between xylem and phloem |
| II: | possess the ability to form secondary tissues |
| III: | are rare in dicotyledonous stems |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
1. Fascicular vascular cambium
2. Intercalary meristem
3. Interfascicular meristem
4. Cork cambium
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