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Q. No.
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%
Level 2: 60%+
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Transverse section of a plant part shows conjoint and open vascular bundles. The transverse section is of:
| 1. | monocot root | 2. | monocot stem |
| 3. | dicot root | 4. | dicot stem |
Subtopic: Dicot Stem |
83%
Level 1: 80%+
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The alternate terms used for ‘Phellogen’ and ‘Phellem’ respectively are:
| 1. | cork and cork cambium |
| 2. | cork cambium and cork |
| 3. | secondary cortex and cork |
| 4. | cork and secondary cortex |
Subtopic: Activity of Cork Cambium |
76%
Level 2: 60%+
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In a plant, the protoxylem lies next to the phloem. This arrangement of xylem will be called:
| 1. | Stelar | 2. | Extrastelar |
| 3. | Endarch | 4. | Exarch |
Subtopic: Complex Tissue: Xylem |
63%
Level 2: 60%+
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In dicot roots, initiation of lateral roots takes place in the cells of:
| 1. | Endodermis | 2. | Pericycle |
| 3. | Epiblema | 4. | Hypodermis |
Subtopic: Anatomy of Root |
83%
Level 1: 80%+
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Identify the simple tissue of plants shown in the given figure:
1. Parenchyma
2. Collenchyma
3. Sclereids
4. Sclerenchyma fibres
1. Parenchyma
2. Collenchyma
3. Sclereids
4. Sclerenchyma fibres
Subtopic: Simple Tissue: Chollenchyma & Sclerenchyma |
89%
Level 1: 80%+
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For the formation of interfascicular cambium and cork cambium the parenchyma cells first undergo:
| 1. | Differentiation | 2. | Dedifferentiation |
| 3. | Redifferentiation | 4. | Reverse differentiation |
Subtopic: Activity of Cork Cambium |
74%
Level 2: 60%+
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Which of the following will not be true for gymnosperms?
| 1. | Gymnosperms lack vessels in their xylem. |
| 2. | Gymnosperms have albuminous cells and sieve cells. |
| 3. | Gymnosperms lack sieve tubes and companion cells. |
| 4. | Gymnosperms lack secondary growth. |
Subtopic: Complex Tissue: Xylem | Complex Tissue: Phloem |
74%
Level 2: 60%+
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I [Plant part] | Column II [Vascular bundle] | ||
| A | Dicot root | P | Conjoint and open |
| B | Monocot root | Q | Conjoint and closed |
| C | Dicot stem | R | Radial, exarch, 2-6 in number |
| D | Monocot stem | S | Radial, exarch, polyarch [more than 6] |
| A | B | C | D | |
| 1. | R | S | Q | P |
| 2. | R | S | P | Q |
| 3. | P | Q | R | S |
| 4. | Q | P | S | R |
Subtopic: Anatomy of Root | Dicot Stem | Monocot Stem |
84%
Level 1: 80%+
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All the following produce secondary tissues in a plant body except:
1. Fascicular vascular cambium
2. Interfascicular cambium
3. Cork-cambium
4. Intercalary meristem
1. Fascicular vascular cambium
2. Interfascicular cambium
3. Cork-cambium
4. Intercalary meristem
89%
Level 1: 80%+
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