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:  Monocot Leaf |
 85%
From NCERT
NEET - 2020
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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 |
 58%
From NCERT
NEET - 2020
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Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified:

 

          A           B          C           D
1. Guard cell Stomatal aperture Subsidiary Cell Epidermal Cell
2. Epidermal Cell Guard Cell Stomatal aperture Subsidiary cell
3. Epidermal Cell Subsidiary Cell Stomatal aperture Guard Cell
4. Subsidiary Cell Epidermal Cell Guard Cell Stomatal aperture
Subtopic:  Epidermal Tissue System |
 83%
From NCERT
AIPMT - 2010
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Some vascular bundles are described as open because these:

1. are not surrounded by pericycle
2. are surrounded by pericycle but no endodermis
3. are capable of producing secondary xylem and phloem
4. possess conjunctive tissue between xylem and phloem
Subtopic:  Vascular Tissue System |
 81%
From NCERT
AIPMT - 2011
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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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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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Vessels are found in:

1. All angiosperms and some gymnosperm
2. Most of the angiosperm and few gymnosperms
3. All angiosperms, all gymnosperms, and some Pteridophyta
4. All pteridophyta
Subtopic:  Complex Tissue: Xylem |
 55%
From NCERT
AIPMT - 2002
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Four radial V.B. are found in:

1. Monocot root 2. Dicot root
3. Dicot stem 4. Monocot stem
Subtopic:  Vascular Tissue System |
From NCERT
AIPMT - 2002
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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:  Activity of Cork Cambium |
 87%
From NCERT
NEET - 2021
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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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