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%
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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
Subtopic:  Dicot Leaf |
 82%
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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
Subtopic:  Dicot Stem |
 80%
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The type of vascular bundle shown in the given figure is seen in:
         
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 |
 86%
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Which layer is most likely to have passage cells?
1. Pericycle
2. Epidermis
3. Endodermis
4. Cortex
Subtopic:  Ground Tissue System |
 58%
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Conjoint vascular bundles are commonly seen in:
1. Stems only 2. Root and Stems
3. Stems and Leaves 4. Root, Stems and Leaves
Subtopic:  Vascular Tissue System |
 77%
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Suberin deposition in the form of Casparian strips is found on which of the following walls of endodermal cells?
1. Transverse only
2. Tangential only
3. Transverse and radial
4. Tangential and radial
Subtopic:  Anatomy of Root |
 75%
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The number of correct statements regarding anatomy of dicot stems is:
Statement I: Hypodermis consists of a few layers of collenchymatous cells.
Statement II: The cells of the endodermis are rich in protein granules.
Statement III: Pericycle is in the form of semi-lunar patches of sclerenchyma.
Statement IV: The ‘ring’ arrangement of vascular bundles is a characteristic of dicot stem.
1. 1
2. 2
3. 3
4. 4
Subtopic:  Dicot Stem |
 70%
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How many of the given statements regarding stomata in plants are correct?
I: Stomata are structures present in the epidermis of leaves.
II: Stomata regulate the process of transpiration and gaseous exchange.
III: Each stoma is composed of two bean-shaped cells known as subsidiary cells which enclose stomatal pore.
IV: In grasses, the guard cells are dumb-bell shaped.
V: The inner walls of guard cells (towards the stomatal pore) are thin and the outer walls (away from the stomatal pore) are highly thickened.

1. 2
2. 3
3. 4
4. 5
Subtopic:  Epidermal Tissue System |
 64%
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The given figure shows the transverse section of:
            
1. Isobilateral (Monocotyledonous) Leaf; where A is xylem and B is phloem
2. Isobilateral (Monocotyledonous) Leaf; where A is phloem and B is xylem
3. Dorsiventral (Dicotyledonous) Leaf; where A is xylem and B is phloem
4. Dorsiventral (Dicotyledonous) Leaf; where A is phloem and B is xylem
Subtopic:  Monocot Leaf |
 78%
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