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Q. No.The ring arrangement of vascular bundles is characteristic of:
1. Dicot stem
2. Dicot root
3. Monocot stem
4. Monocot root
Subtopic: Dicot Stem |
81%
From NCERT
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Which of the following statement is not true for stomatal apparatus?
| 1. | Guard cells invariably possess chloroplasts and mitochondria |
| 2. | Guard cells are always surrounded by subsidiary cells |
| 3. | Stomata are involved in gaseous exchange |
| 4. | Inner walls of guard cells are thick |
Subtopic: Epidermal Tissue System |
From NCERT
NEET - 2013
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Grasses have the capability to recover the parts lost to grazing by herbivores due to the presence of a type of meristem that is called as the:
1. Root apical meristem
2. Shoot apical meristem
3. Intercalary meristem
4. Floral meristem
1. Root apical meristem
2. Shoot apical meristem
3. Intercalary meristem
4. Floral meristem
92%
From NCERT
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The transverse section shown in the given figure is representative of:
1. Monocot stem
2. Monocot root
3. Dicot stem
4. Dicot root
1. Monocot stem
2. Monocot root
3. Dicot stem
4. Dicot root
Subtopic: Monocot Stem |
83%
From NCERT
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Assertion(A): Both apical meristems and intercalary meristems appear early in life of a plant and contribute to the formation of the primary plant body.
Reason(R): Both apical meristems and intercalary meristems are primary meristems.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Both apical meristems and intercalary meristems are primary meristems.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
From NCERT
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Assertion(A): The vascular bundles of dicot stems are called open vascular bundles.
Reason(R): Dicot stems can make secondary xylem and secondary phloem with the help of cambium.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Dicot stems can make secondary xylem and secondary phloem with the help of cambium.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Vascular Tissue System |
82%
From NCERT
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Assertion(A): Dicotyledonous stems possess the ability to form secondary xylem and phloem tissues.
Reason(R): In dicotyledonous stems, cambium is present between pericycle and xylem.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): In dicotyledonous stems, cambium is present between pericycle and xylem.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Dicot Stem |
67%
From NCERT
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Assertion(A): The meristematic tissue called cork cambium or phellogen develops in the cortex region of monocot stems.
Reason(R): The activity of vascular cambium causes the shedding of cortical and epidermis layers in the dicot stem.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The activity of vascular cambium causes the shedding of cortical and epidermis layers in the dicot stem.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Activity of Cork Cambium |
69%
From NCERT
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Assertion(A): Monocotyledonous stems do not possess the ability to form secondary xylem and phloem tissues.
Reason(R): In monocotyledonous stems, cambium is present.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): In monocotyledonous stems, cambium is present.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Vascular Tissue System |
87%
From NCERT
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| Assertion (A): | Suberization leads to death of cell. |
| Reason (R): | Suberin is a water resistant material. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Anatomy of Root |
61%
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