Identify the correct statements:
 
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.

Choose the correct answer from the options given below:
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 |
 70%
From NCERT
NEET - 2023
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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:  Activity of Cork Cambium |
 63%
From NCERT
NEET - 2022
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Match List-I with List-II.

List -I  List-I
(a)Lenticels
(b)Cork cambium
(c) Secondary cortex
(d)Cork
(i) Phellogen 
(ii) Suberin deposition
(iii) Exchange of gases
(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:  Activity of Cork Cambium |
 87%
From NCERT
NEET - 2021
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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:  Activity of Cork Cambium |
 59%
From NCERT
NEET - 2020
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Lenticels are involved in:
1. Gaseous exchange
2. Food transfer
3. Photosynthesis
4. Transpiration

Subtopic:  Activity of Cork Cambium |
 94%
From NCERT
AIPMT - 2013
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The cork cambium, cork and secondary cortex are collectively called:
1.  phellogen
2.  periderm
3.  phellem
4.  phelloderm
Subtopic:  Activity of Cork Cambium |
 83%
From NCERT
AIPMT - 2011
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The main function of lenticel is:
1. Transpiration
2. Guttation
3. Gaseous exchange
4. Bleeding

Subtopic:  Activity of Cork Cambium |
 93%
From NCERT
AIPMT - 2002
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The periderm includes:
1.  Secondary phloem
2.  Cork
3.  Cambium
4.  All of these

Subtopic:  Activity of Cork Cambium |
From NCERT
AIPMT - 1998
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