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Q. No.Annual rings that are formed due to secondary growth are clearly seen in
1. Roots of aquatic plants
2. Stem of trees in tropical region
3. Both roots and stem of trees in tropical region
4. Stem of trees in temperate regions
Subtopic: Activity of Vascular Cambium (OLD NCERT) |
72%
From NCERT
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Identify the correct statements and choose the option accordingly
1. a and d only
2. a, b and c
3. c and d only
4. b and c only
| a. | In dicot roots, pericycle is completely transformed into vascular cambium |
| b. | Lenticels regulate the transpiration rate in woody trees |
| c. | Bark in a tree does not include the vascular cambium |
| d. | Cork is impervious to water due to suberin deposition in the cell wall |
1. a and d only
2. a, b and c
3. c and d only
4. b and c only
Subtopic: Activity of Cork Cambium |
57%
From NCERT
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The cells of secondary medullary rays in dicot plants are formed by
1. Pith cells
2. Hypodermal cells
3. Meristem present in stelar region
4. Endodermal cells
1. Pith cells
2. Hypodermal cells
3. Meristem present in stelar region
4. Endodermal cells
Subtopic: Dicot Stem |
57%
From NCERT
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Pericycle is not present in
1. Dicotyledonous stem
2. Dicotyledonous root
3. Monocotyledonous stem
4. Monocotyledonous root
1. Dicotyledonous stem
2. Dicotyledonous root
3. Monocotyledonous stem
4. Monocotyledonous root
Subtopic: Dicot Stem | Monocot Stem |
78%
From NCERT
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In dicot stem, the cambium outer side to the endodermis forms secondary
1. Cortex
2. Xylem
3. Meristem
4. Phloem
1. Cortex
2. Xylem
3. Meristem
4. Phloem
Subtopic: Activity of Cork Cambium |
64%
From NCERT
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Which of the following is an example of tissue?
1. Interfacicular cambium
2. Intra-fascicular cambium
3. Phellogen
4. Phellem
1. Interfacicular cambium
2. Intra-fascicular cambium
3. Phellogen
4. Phellem
Subtopic: Activity of Cork Cambium |
From NCERT
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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
1. Transverse only
2. Tangential only
3. Transverse and radial
4. Tangential and radial
Subtopic: Anatomy of Root |
75%
From NCERT
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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.
1. incapable of transforming into another cell type.
2. composed of small cells.
3. comprised of only one cell type.
4. always isodiametric.
Subtopic: Tissue: Introduction & Classification (OLD NCERT) | Simple Tissue: Parenchyma |
77%
From NCERT
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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.
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 |
From NCERT
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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.
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 |
68%
From NCERT
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