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Q. No.Match List-I with List-II.
List-I
List-I
(a)
Lenticels
(i)
Phellogen
(b)
Cork cambium
(ii)
Suberin deposition
(c)
Secondary cortex
(iii)
Exchange of gases
(d)
Cork
(iv)
Phelloderm
Choose the correct answer from the options given below:
(a)
(b)
(c)
(d)
1.
(ii)
(iii)
(iv)
(i)
2.
(iv)
(ii)
(i)
(iii)
3.
(iv)
(i)
(iii)
(ii)
4.
(iii)
(i)
(iv)
(ii)
Subtopic: Â Activity of Cork Cambium |
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Which of the following statements about cork cambium is incorrect?
| 1. | It forms a secondary cortex on its outside |
| 2. | It forms a part of periderm |
| 3. | It is responsible for the formation of lenticels |
| 4. | It is a couple of layers thick |
Subtopic: Â Activity of Cork Cambium |
 58%
From NCERT
NEET - 2020
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Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are:
| 1. | Lenticels | 2. | Guard cells |
| 3. | Bundle sheath cells | 4. | Bulliform cells |
Subtopic: Â Monocot Leaf |
 85%
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NEET - 2020
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Read the following statements about the vascular bundles:
Choose the correct answer from the options given below:
1. (a), (c), (d) and (e) only
2. (a), (b) and (d) only
3. (b), (c), (d) and (e) only
4. all statements are correct
| a. | In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii. |
| b. | Conjoint closed vascular bundles do not possess cambium. |
| c. | In open vascular bundles, cambium is present in between xylem and phloem. |
| d. | The vascular bundles of dicotyledonous stem possess endarch protoxylem. |
| e. | In monocotyledonous root, usually there are more than six xylem bundles present. |
1. (a), (c), (d) and (e) only
2. (a), (b) and (d) only
3. (b), (c), (d) and (e) only
4. all statements are correct
Subtopic: Â Vascular Tissue System |
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In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :
| a. | secretion of secondary metabolites and their deposition in the lumen of vessels. |
| b. | deposition of organic compounds like tannins and resins in the central layers of stem. |
| c. | deposition of suberin and aromatic substances in the outer layer of stem. |
| d. | deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem. |
| e. | presence of parenchyma cells, functionally active xylem elements and essential oils. |
Choose the correct answer from the options given below
1. (b) and (d) Only
2. (a) and (b) Only
3. (c) and (d) Only
4. (d) and (e) Only
 57%
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Select the correct statements related to the activity of cork cambium:
| 1. | The outer cells differentiate into phelloderm. |
| 2. | The cork differentiated from cork cambium, is impervious to water due to deposition of tannins and resins. |
| 3. | Cuts the cells only on the outer side. |
| 4. | Cuts the cells on inner as well as outer side. |
Subtopic: Â Activity of Cork Cambium |
 59%
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NEET - 2022
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Which of the following is not a character of collenchyma tissue?
| 1. | They provide mechanical support to the growing part of the plant |
| 2. | They occur in layers below epidermis in dicotyledonous plants |
| 3. | They consist of cells with thick corners due to cellulose deposition |
| 4. | They are usually dead and without protoplasts |
Subtopic: Â Simple Tissue: Chollenchyma & Sclerenchyma |
 81%
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NEET - 2022
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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: Â Anatomy of Root |
 76%
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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: Â Simple Tissue: Chollenchyma & Sclerenchyma |
 58%
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Give below are two statements :
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. |
| Statement II: | Exarch condition is the most common feature of the root system. |
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Â Dicot Stem |
 59%
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