Q. No.In a dicot stem, the pericycle is present on the inner side of the endodermis and:
| 1. | above the phloem, in form of semi-lunar patches of sclerenchyma |
| 2. | above the xylem, in form of semi-lunar patches of sclerenchyma |
| 3. | above the phloem, in form of semi-lunar patches of collenchyma |
| 4. | above the xylem, in form of semi-lunar patches of collenchyma |
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In a dicot stem the term 'starch sheath' is used for:
| 1. | Epidermis with guard cells | 2. | Hypodermis |
| 3. | Endodermis | 4. | Pericycle |
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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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Casparian strips are:
| 1. | waxy deposition of suberin on only the tangential walls of the endodermal cells |
| 2. | waxy deposition of suberin on only the radial walls of the endodermal cells |
| 3. | waxy deposition of suberin on both tangential and radial walls of the endodermal cells |
| 4. | waxy deposition of lignin on both tangential and radial walls of the endodermal cells |
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The hypodermis of a dicotyledonous stem:
| 1. | is parenchymatous and synthesizes and stores food |
| 2. | is collenchymatous and provides mechanical strength to the young stem |
| 3. | is sclerenchymatous and provides mechanical strength to the young stem |
| 4. | is parenchymatous and provides mechanical strength to the young stem |
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The ring arrangement of vascular bundles is a characteristic feature of:
| 1. | Monocot stem | 2. | Dicot stem |
| 3. | Monocot root | 4. | Dicot root |
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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 |
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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 |
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 |
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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 |
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