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Q. No.A: Secondary growth is absent in monocots
R: Monocots lack vascular cambium.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
Subtopic: Â Monocot Stem |
 87%
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Assertion (A) : Phellogen is a secondary meristem that forms cork on the outer side and secondary cortex on the inner side.
Reason (R) : Phellogen is formed every year from hypodermis and pericycle in dicot root and dicot stem respectively.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
Subtopic: Â Activity of Cork Cambium |
 59%
From NCERT
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Read the following statements:
Choose the correct option:
| Statement A | Annual rings can be distinctly observed in plants growing in temperate regions |
| Statement B | In temperate regions, the climatic conditions are not uniform throughout the year |
| 1. | Statement A is correct but statement B is wrong |
| 2. | Both the statement A and B are correct and statement B is the correct explanation of statement A |
| 3. | Both the statements A and B are correct but statement B is not the correct explanation of statement A |
| 4. | Both the statements A and B are incorrect |
Subtopic: Â Activity of Cork Cambium |
 75%
From NCERT
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Read the following statements with respect to interstellar secondary growth in dicot stems:
How many of the above statements are correct?
1. Three
2. Four
3. Five
4. Two
| (i) | Autumn wood and spring wood appear as alternate concentric rings and constitute an annual ring. |
| (ii) | Late wood possesses vessels of narrow diameter relative to early wood. |
| (iii) | Annual rings seen in cut stems give an estimate of the age of the tree and this method is called a dendrogram. |
| (iv) | Cambium is more active during the spring season than the winter season. |
| (v) | Growth rings or annual rings are very prominent in the trees growing near sea shores. |
How many of the above statements are correct?
1. Three
2. Four
3. Five
4. Two
Subtopic: Â Activity of Cork Cambium |
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Read the following statements:
How many of the above statements are correct?
1. One
2. Two
3. Four
4. Five
| (i) | Epidermal cells have a lower number of chloroplasts or lack them completely, except for the guard cells. |
| (ii) | Epidermis is mostly single-layered except in the leaves of Ficus and Peperomia. |
| (iii) | Epidermis lack intercellular spaces. |
| (iv) | Root epidermis lack cuticle. |
| (v) | In plants with secondary growth, the epidermis of roots and stems is usually replaced by a periderm through the action of cork cambium or phellogen. |
How many of the above statements are correct?
1. One
2. Two
3. Four
4. Five
Subtopic: Â Epidermal Tissue System |
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Read the following statements:
How many of the above statements are correct?
1. Three
2. Two
3. One
4. Four
| (i) | The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls. |
| (ii) | Pholem parenchyma is made of elongated non-tapering cylindrical cells which have scanty cytoplasm. |
| (iii) | Pholem fibres are made of parenchymatous cells. |
| (iv) | Companion cells help in maintaining the pressure gradient in the sieve tube. |
| (v) | The phloem parenchyma stores food material and other substances like resins, latex, and mucilage |
How many of the above statements are correct?
1. Three
2. Two
3. One
4. Four
Subtopic: Â Complex Tissue: Phloem |
 61%
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Read the following statements:
How many the above statements are correct?
1. Four
2. Six
3. Two
4. Three
| (i) | The first formed primary xylem elements are called protoxylem and the later formed primary xylem is called metaxylem |
| (ii) | Primary xylem is endarch in stems |
| (iii) | Primary xylem is exarch is roots |
| (iv) | Phloem transports food materials, usually from leaves to other plants parts |
| (v) | Vessel members are interconnected through perforations in their common walls |
| (vi) | Tracheids are elongated or tube like cells with thick, lignified walls and tapering cells |
How many the above statements are correct?
1. Four
2. Six
3. Two
4. Three
Subtopic: Â Complex Tissue: Xylem |
 85%
From NCERT
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Select incorrect statements from the given below:
| (i) | Endodermis with Casparian strips are found in the dicot stem. |
| (ii) | The endodermis is a part of the stele. |
| (iii) | Open vascular bundles are found in some monocots. |
| (iv) | Bulliform cells are found in the upper epidermis in the isobilateral leaf. |
1 (i) and (ii)
2. (ii) and (iii)
3. (i), (ii) and (iii)
4. Only (iv)
Subtopic: Â Monocot Stem |
 52%
From NCERT
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What is the number of correct statements amongst the following regarding the phloem tissue of plants?
| I: | Gymnosperms lack albuminous cells and sieve cells. |
| II: | The companion cells are specialized parenchymatous cells. |
| III: | Phloem parenchyma is absent in most of the monocotyledons. |
| IV: | Phloem fibers are generally absent in the primary phloem. |
1. 0
2. 2
3. 3
4. 4
Subtopic: Â Complex Tissue: Phloem |
 61%
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Match the columns:
1. A = (ii), B = (iii), C =(i), D = (iv)
2. A = (iii), B = (ii), C =(i), D = (iv)
3. A = (iv), B = (iii), C =(i), D = (ii)
4. A = (iii), B = (iv), C =(ii), D = (i)
| Column-I | Column-II | ||
| A. | Bean shaped guard cell | (i) | Dicot stem |
| B. | Dumb-bell shaped guard cell | (ii) | Monocot leaf |
| C. | Trichome | (iii) | Dicot leaf |
| D. | Exarch xylem | (iv) | Dicot and monocot root |
1. A = (ii), B = (iii), C =(i), D = (iv)
2. A = (iii), B = (ii), C =(i), D = (iv)
3. A = (iv), B = (iii), C =(i), D = (ii)
4. A = (iii), B = (iv), C =(ii), D = (i)
Subtopic: Â Epidermal Tissue System |
 84%
From NCERT
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