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Q. No.A ‘simple tissue’ in the body of an angiosperm is:
1.
incapable of transforming into another cell type.
2.
composed of small cells.
3.
comprised of only one cell type.
4.
always isodiametric.
Subtopic: Simple Tissue: Parenchyma |
77%
Level 2: 60%+
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What would be the best description of stomata?
| 1. | two guard cells plus the subsidiary cells only. |
| 2. | an opening surrounded by two guard cells. |
| 3. | an opening surrounded by two guard cells and the subsidiary cells. |
| 4. | two guard cells only. |
Subtopic: Epidermal Tissue System |
Level 4: Below 35%
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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 |
67%
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 |
88%
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 |
82%
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 |
91%
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%
Level 2: 60%+
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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 |
82%
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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