Q. No.Root hairs are:
1. unicellular extensions of subsidiary cells
2. unicellular elongations of epidermal cells
3. unicellular elongations of ground tissue cells
4. appendages of the cuticle
1. unicellular extensions of subsidiary cells
2. unicellular elongations of epidermal cells
3. unicellular elongations of ground tissue cells
4. appendages of the cuticle
Identify the tissue system from among the following:
| 1. Parenchyma | 2. Xylem |
| 3. Epidermis | 4. Phloem |
A conjoint and open vascular bundle will be observed in the transverse section of
| 1. | Monocot root | 2. | Monocot stem |
| 3. | Dicot root | 4. | Dicot stem |
Consider the given two statements:
| I: | Parenchyma cells in plants play an important role in regeneration and wound healing. |
| II: | They are living at maturity and usually have only primary walls. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is True but II is False
4. Both I and II are False
In the transverse section of a monocot root given below, identify A, B, C and D:
| A | B | C | D | |
| 1. | Epidermis | Exodermis | Endodermis | Pericycle |
| 2. | Exodermis | Epidermis | Endodermis | Pericycle |
| 3. | Epidermis | Exodermis | Pericyle | Endodermis |
| 4. | Exodermis | Epidermis | Pericyle | Endodermis |
Identify the option where the difference between the vascular bundles of Dicot and Monocot stem is not correctly mentioned:
|
|
Dicot stem |
Monocot stem |
|
1. |
Collateral and open |
Collateral and closed |
|
2. |
Arranged in a ring |
Scattered |
|
3. |
Larger toward the center |
Of uniform size |
|
4. |
Phloem parenchyma present |
Phloem parenchyma absent |
Identify the option where the difference between the anantomy of Dicot and Monocot root is not correctly mentioned:
|
Dicot root |
Monocot root |
||
|
1. |
Xylem bundles |
Numerous |
Vary between 2 and 6 |
|
2. |
Pith |
Small/absent |
Large/well developed |
|
3. |
Pericycle |
Gives rise to lateral roots, cambium and cork cambium |
Gives rise to lateral roots only |
|
4. |
Cambium |
Appears later as a secondary meristem |
Altogether absent |
The following diagram shows the anatomy of the root of an epiphytic orchid. The function of the structure marked X is:
1. Photosynthesis
2. Storage
3. Protective
4. Repair and healing
In the transverse section of a young dicot stem, the term ‘hard bast’ will be used for the structure labeled:
| 1. | A | 2. | B |
| 3. | C | 4. | D |
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