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Q. No.Which of the following has "anucleate" cells
1. Sieve tube elements
2. Xylem Parenchyma
3. Companion cells
4. Phloem Parenchyma
Subtopic: Complex Tissue: Xylem |
83%
Level 1: 80%+
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Given below are two statements:
Statement I: The generation of cellular diversity is known as differentiation.
Statement II: Formation of interfascicular cambium and cork cambium from fully differentiated parenchyma cells are examples of dedifferentiation.
In light of the above statements, choose the most appropriate answer from the options given below:
1. Both statement I and statement II are correct.
2. Both statement I and statement II are incorrect.
3. Statement I is correct but statement II is incorrect.
4. Statement I is incorrect but statement II is correct.
Statement I: The generation of cellular diversity is known as differentiation.
Statement II: Formation of interfascicular cambium and cork cambium from fully differentiated parenchyma cells are examples of dedifferentiation.
In light of the above statements, choose the most appropriate answer from the options given below:
1. Both statement I and statement II are correct.
2. Both statement I and statement II are incorrect.
3. Statement I is correct but statement II is incorrect.
4. Statement I is incorrect but statement II is correct.
72%
Level 2: 60%+
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Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of :
| 1. | Epiblema | 2. | Cortex |
| 3. | Endodermis | 4. | Pericycle |
Subtopic: Anatomy of Root |
77%
Level 2: 60%+
NEET - 2022
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The type of tissue commonly found in the fruit wall of nuts is :
| 1. | Parenchyma | 2. | Collenchyma |
| 3. | Sclerenchyma | 4. | Sclereid |
Subtopic: Simple Tissue: Chollenchyma & Sclerenchyma |
58%
Level 3: 35%-60%
NEET - 2022
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Interfascicular cambium is present between:
1. Primary xylem and primary phloem
2. Pericycle and endodermis
3. Two vascular bundles
4. Secondary xylem and secondary phloem
1. Primary xylem and primary phloem
2. Pericycle and endodermis
3. Two vascular bundles
4. Secondary xylem and secondary phloem
50%
Level 3: 35%-60%
NEET - 2022
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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
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
66%
Level 2: 60%+
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In flowering plants, all the tissues except _________A________and ________B___________constitute the ground tissue. Complete the statement by selecting the correct option for A and B.
A B
1. Epidermis Endodermis
2. Pith Medullary rays
3. Epidermis Vascular bundles
4. Pericycle Vascular bundles
A B
1. Epidermis Endodermis
2. Pith Medullary rays
3. Epidermis Vascular bundles
4. Pericycle Vascular bundles
Subtopic: Ground Tissue System |
91%
Level 1: 80%+
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Identify the incorrect statements:
1. Only I and II
2. Only II & III
3. Only III and IV
4. Only I and IV
| I. | Gymnosperms lack vessels in their xylem. |
| II. | In stems the arrangement of primary xylem is called an exarch. |
| III. | Angiosperms lack sieve tubes and companion cells. |
| IV. | Phloem fibres are generally absent in primary phloem. |
2. Only II & III
3. Only III and IV
4. Only I and IV
Subtopic: Complex Tissue: Xylem | Complex Tissue: Phloem |
75%
Level 2: 60%+
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Study the given two statements – an Assertion and Reason, and select the correct answer from the options given:
Assertion: Autumn wood or late wood has fewer xylary elements that have narrow vessels.
Reason: The autumn wood is lighter in colour and has a lower density.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason correctly explains Assertion
3. Assertion is false but Reason is true.
4. Both Assertion and Reason are true but Reason does not correctly explain Assertion.
Assertion: Autumn wood or late wood has fewer xylary elements that have narrow vessels.
Reason: The autumn wood is lighter in colour and has a lower density.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason correctly explains Assertion
3. Assertion is false but Reason is true.
4. Both Assertion and Reason are true but Reason does not correctly explain Assertion.
Subtopic: Vascular Tissue System |
65%
Level 2: 60%+
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Study the given two statements – an Assertion and Reason, and select the correct answer from the options given:
| Assertion (A): | During secondary growth in a dicot stem, the amount of secondary phloem produced is more than the secondary xylem. |
| Reason (R): | Cambium is generally more active on the inner side than on the outer. |
| 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 false but (R) is true. |
| 4. | Both (A) and (R) are false. |
Subtopic: Activity of Cork Cambium |
Level 4: Below 35%
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