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Q. No.The waterproof region around the radial and transverse walls of endodermal cells is the
1. Casparian strip
2. pericycle
3. apoplast
4. symplast
1. Casparian strip
2. pericycle
3. apoplast
4. symplast
Subtopic: Anatomy of Root |
95%
From NCERT
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The two simple tissues that are specialized for support are
1. parenchyma and collenchyma
2. collenchyma and sclerenchyma
3. sclerenchyma and parenchyma
4. parenchyma and xylem
1. parenchyma and collenchyma
2. collenchyma and sclerenchyma
3. sclerenchyma and parenchyma
4. parenchyma and xylem
Subtopic: Simple Tissue: Chollenchyma & Sclerenchyma |
89%
From NCERT
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| Assertion (A): | Sclerenchyma provides mechanical support to organs and is usually dead and without protoplasts. |
| Reason (R): | Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having a few or numerous pits. |
| 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: Simple Tissue: Chollenchyma & Sclerenchyma |
59%
From NCERT
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Which of the following statements about the vascular tissue system is not true?
1. xylem and phloem are continuous throughout the plant body
2. xylem not only conducts water and dissolved minerals but also provides support
3. four cell types occur in phloem: sieve tube elements, companion cells, tracheids, and vessel elements
4. sieve tube elements lack nuclei
1. xylem and phloem are continuous throughout the plant body
2. xylem not only conducts water and dissolved minerals but also provides support
3. four cell types occur in phloem: sieve tube elements, companion cells, tracheids, and vessel elements
4. sieve tube elements lack nuclei
Subtopic: Complex Tissue: Xylem | Complex Tissue: Phloem |
77%
From NCERT
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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%
From NCERT
NEET - 2022
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Primary growth, an increase in the length of a plant, occurs at the
1. cork cambium
2. apical meristem
3. vascular cambium
4. lateral meristem
1. cork cambium
2. apical meristem
3. vascular cambium
4. lateral meristem
Subtopic: Activity of Cork Cambium |
93%
From NCERT
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Identify the correct statements:
Choose the correct answer from the options given below:
| A: | Lenticels are the lens-shaped openings permitting the exchange of gases. |
| B: | Bark formed early in the season is called hard bark. |
| C: | Bark is a technical term that refers to all tissues exterior to vascular cambium. |
| D: | Bark refers to periderm and secondary phloem. |
| E: | Phellogen is single- layered in thickness. |
| 1. | B and C only | 2. | B, C and E only |
| 3. | A and D only | 4. | A, B and D only |
Subtopic: Activity of Cork Cambium |
69%
From NCERT
NEET - 2023
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The transverse section of a plant shows following anatomical features:
| a. | Large number of scattered vascular bundles surrounded by bundle sheath. |
| b. | Large conspicuous parenchymatous ground tissue. |
| c. | Vascular bundles conjoint and closed. |
| d. | Phloem parenchyma absent. |
Identify the category of plant and its part :
1. Monocotyledonous root
2. Dicotyledonous stem
3. Dicotyledonous root
4. Monocotyledonous stem
Subtopic: Monocot Stem |
77%
From NCERT
NEET - 2020
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Consider the following tissues in the stellar region of a stem showing secondary growth.
(A) Primary xylem
(B) Secondary xylem
(C) Primary phloem
(D) Secondary phloem
Arrange these in the correct sequence of their position from pith towards cortex.
(A) Primary xylem
(B) Secondary xylem
(C) Primary phloem
(D) Secondary phloem
Arrange these in the correct sequence of their position from pith towards cortex.
| 1. | (A), (B), (D), (C) | 2. | (B), (A), (C), (D) |
| 3. | (A), (B), (C), (D) | 4. | (B), (A), (D), (C) |
Subtopic: Dicot Stem |
From NCERT
NEET - 2023
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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 |
76%
From NCERT
NEET - 2022
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