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Q. No.Trichomes in stems can perform all the following functions except:
1.
Generate secretory products to cause sting.
2.
Reduce herbivory.
3.
Bring about greater water loss through extended surface area of the epidermis.
4.
Provide shade.
Subtopic: Epidermal Tissue System |
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Level 2: 60%+
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The characteristic distribution of vascular bundles in the T.S. shown below tells us that the T.S. must be of a:
1. Monocot stem
2. Dicot stem
3. Monocot root
4. Dicot root
1. Monocot stem
2. Dicot stem
3. Monocot root
4. Dicot root
Subtopic: Monocot Stem |
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Level 1: 80%+
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Bulliform cells found in adaxial epidermis in grasses:
| 1. | enable the leaf to fold. |
| 2. | are found in the endodermis. |
| 3. | are highly photosynthetic. |
| 4. | are characteristic of xeromorphic plants. |
Subtopic: Monocot Leaf |
81%
Level 1: 80%+
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The development of the root primary xylem is said to be:
1. Exarch
2. Endarch
3. Centrifugal
4. Diffuse
1. Exarch
2. Endarch
3. Centrifugal
4. Diffuse
Subtopic: Complex Tissue: Xylem |
87%
Level 1: 80%+
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In the vascular bundle of a typical monocot such as corn, the structure that is most likely absent will be:
| 1. | Metaxylem | 2. | Cambium |
| 3. | Protoxylem lacuna | 4. | Metaphloem |
Subtopic: Vascular Tissue System |
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Level 1: 80%+
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In a dorsiventral [dicot] leaf, the vascular bindles present in the midrib are:
| 1. | smallest in size |
| 2. | largest in size |
| 3. | equal in size to others |
| 4. | radial |
Subtopic: Dicot Leaf |
75%
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The transverse section of a dicot root is unlikely to show the presence of a conspicuous:
1. cortex
2. pericycle
3. pith
4. endodermis
1. cortex
2. pericycle
3. pith
4. endodermis
Subtopic: Dicot Leaf |
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Level 1: 80%+
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In a dicot stem, the term ‘starch sheath’ is often used to indicate:
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
Subtopic: Dicot Stem |
78%
Level 2: 60%+
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Identify the correct statements:
| I: | Guard cells are dumbbell shaped in dicots |
| II: | Initiation of lateral roots and vascular cambium during the secondary growth takes place in pericycle cells in dicot roots. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Anatomy of Root |
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Level 2: 60%+
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The type of vascular bundle shown in the given figure is seen in:
1. Only I
2. Only II and III
3. Only I and II
4. Only II
| I: | Roots |
| II: | Monocot stems |
| III: | Dicot stems |
1. Only I
2. Only II and III
3. Only I and II
4. Only II
Subtopic: Vascular Tissue System |
85%
Level 1: 80%+
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