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Q. No.
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.
Subtopic: Vascular Tissue System |
87%
From NCERT
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Assertion (A): Suberization leads to death of cell
Reason (R): Suberin is 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.
Reason (R): Suberin is 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 |
55%
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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
1. monocot root
2. monocot stem
3. dicot root
4. dicot stem
Subtopic: Dicot Stem |
82%
From NCERT
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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 |
77%
From NCERT
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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
1. Stelar
2. Extrastelar
3. Endarch
4. Exarch
Subtopic: Complex Tissue: Xylem |
63%
From NCERT
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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
1. Endodermis
2. Pericycle
3. Epiblema
4. Hypodermis
Subtopic: Anatomy of Root |
80%
From NCERT
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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 |
88%
From NCERT
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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
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Reverse differentiation
Subtopic: Activity of Cork Cambium |
75%
From NCERT
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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 | Secondary Growth in Root (OLD NCERT) |
76%
From NCERT
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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 |
83%
From NCERT
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