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Q. No.Guard cells help in:
| 1. | protection against grazing |
| 2. | transpiration |
| 3. | guttation |
| 4. | fighting against infection |
Subtopic: Epidermal Tissue System |
88%
Level 1: 80%+
AIPMT - 2009
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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 |
84%
Level 1: 80%+
AIPMT - 2010
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In the given figure, which component has thin outer walls and highly thickened inner walls?
1. D
2. A
3. B
4. C
1. D
2. A
3. B
4. C
Subtopic: Epidermal Tissue System |
77%
Level 2: 60%+
NEET - 2024
Hints
Which of the following statement is not true for stomatal apparatus?
| 1. | Guard cells invariably possess chloroplasts and mitochondria |
| 2. | Guard cells are always surrounded by subsidiary cells |
| 3. | Stomata are involved in gaseous exchange |
| 4. | Inner walls of guard cells are thick |
Subtopic: Epidermal Tissue System |
51%
Level 3: 35%-60%
NEET - 2013
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Specialised epidermal cells surrounding the guard cells are called?
| 1. | subsidiary cells | 2. | bulliform cells |
| 3. | lenticels | 4. | complementary cells |
Subtopic: Epidermal Tissue System |
93%
Level 1: 80%+
NEET - 2016
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Stomata in grass leaves are:
| 1. | Dumb-bell shaped | 2. | Kidney shaped |
| 3. | Rectangular | 4. | Barrel-shaped |
Subtopic: Epidermal Tissue System |
92%
Level 1: 80%+
NEET - 2018
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Links
Match the following and choose the correct option from below
|
A |
Cuticle |
i. |
Guard cells |
|
B |
Bulliform cells |
ii. |
Single layer |
|
C |
Stomata |
iii. |
Waxy layer |
|
D |
Epidermis |
iv. |
Empty colourless cell |
Options:
|
1. |
A-iii |
B-iv |
C-i |
D-ii |
|
2. |
A-i |
B-ii |
C-iii |
D-iv |
|
3. |
A-iii |
B-ii |
C-iv |
D-i |
|
4. |
A-iii |
B-ii |
C-i |
D-iv |
Subtopic: Epidermal Tissue System |
92%
Level 1: 80%+
Hints
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%
Level 1: 80%+
AIPMT - 2011
Hints
The transverse section of monocot root shows the following internal tissue organization. Arrange them in correct sequence starting from periphery to the centre.
A. Endodermis
B. Pith
C. Epidermis
D. Pericycle
E. Cortex
Choose the correct answer from the options given below:
1. D, C, E, A, B
2. A, C, E, B, D
3. C, E, A, D, B
4. C, E, D, B, A
A. Endodermis
B. Pith
C. Epidermis
D. Pericycle
E. Cortex
Choose the correct answer from the options given below:
1. D, C, E, A, B
2. A, C, E, B, D
3. C, E, A, D, B
4. C, E, D, B, A
Subtopic: Anatomy of Root |
88%
Level 1: 80%+
NEET - 2024
Hints
Vascular bundles in monocotyledons are considered closed because:
| 1. | a bundle sheath surrounds each bundle |
| 2. | cambium is absent |
| 3. | there are no vessels with perforations |
| 4. | xylem is surrounded all around by phloem |
Subtopic: Vascular Tissue System |
90%
Level 1: 80%+
NEET - 2015
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