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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