Q. No.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
Match the plants in Column-I with the description of anatomy of vascular bundles in them in Column-II and select the correct option from the codes given:
|
Column-I |
Column-II |
||
| A. |
Dicot stem |
a. |
Collateral, closed and scattered in ground tissue |
| B. |
Monocot stem |
b. |
Conjoint, collateral endarch and open |
| C. |
Dicot root |
c. |
Radial, exarch and polyarch [usually more than 6] |
| D. |
Monocot root |
d. |
Radial, exarch and 2 to 6 in number |
Codes:
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | d | c |
| 3. | a | b | d | c |
| 4. | b | a | c | d |
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
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 |
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 |
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 |
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
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 |
Identify the tissue system from among the following:
| 1. Parenchyma | 2. Xylem |
| 3. Epidermis | 4. Phloem |
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