Q. No.
Regarding the guard cells:
| 1. | walls away from the stomatal pores are thin and those towards the stomatal pores are thick |
| 2. | walls away from the stomatal pores are thick and those towards the stomatal pores are thin |
| 3. | chloroplasts are mostly absent |
| 4. | play no role in the regulation of opening and closing of stomata |
All the following statements regarding the anatomy of a typical dicotyledonous root are correct except:
| 1. | Many cells of the epiblema protrude in the form of unicellular root hairs. |
| 2. | The innermost layer of the cortex is called as the endodermis. |
| 3. | Pericycle is made up of collenchymatous cells. |
| 4. | Parenchymatous conjunctive tissue lies between the xylem and phloem. |
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 |
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 |
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 |
All the following are true for trichomes except:
| 1. | they are usually unicellular |
| 2. | they may be branched |
| 3. | they may be secretory |
| 4. | they help in prevention of water loss due to transpiration |
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
All the following are examples of secondary or lateral meristems except:
| 1. | Fascicular vascular cambium | 2. | Intercalary meristem |
| 3. | Interfascicular meristem | 4. | Cork cambium |
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