Q. No.Consider the following statements:
In a monocot stem-
I:
Hypodermis is collenchymatous.
II:
Vascular bundle are collateral and closed.
III:
Trichomes are usually absent.
Which of the above statements are true?
1.
I and II only
2.
I and III only
3.
II and III only
4.
I, II and III
Consider the following statements about dicot leaf:
| I: | The epidermis which covers both the upper surface (adaxial epidermis) and lower surface (abaxial epidermis) of the leaf has a conspicuous cuticle. |
| II: | More stomata present on upper surface. |
| III: | Mesophyll is differentiated into palisade and spongy parenchyma. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Companion cells are closely associated with
1. sieve elements
2. vessel elements
3. trichomes
4. guard cells
The desert grasses, often curls their leaf to minimise water loss due to presence of
| 1. | Spines |
| 2. | Palisade parenchyma |
| 3. | Bundle sheath cells |
| 4. | Bulliform cells |
Match the Column I and II.
|
Column I |
Column II |
|
A. Bulliform cells |
1. Stomata |
|
B. Guard cells |
2. Aerating pore |
|
C. Lenticels |
3. Accessory cells |
|
D. Subsidiary cell |
4. Isobilateral cells |
| A | B | C | D | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 3 | 1 | 2 | 4 |
| 3. | 4 | 1 | 2 | 3 |
| 4. | 4 | 3 | 2 | 1 |
The main function of the plant tissue shown below is:
| 1. | Storage of nutrients |
| 2. | Providing buoyancy to submerged plants |
| 3. | Mechanical support to growing parts of a plant |
| 4. | Increase in the length of the plant |
The vascular bundle shown in the diagram is most likely to be seen in:
| 1. | Monocot stem | 2. | Dicot stem |
| 3. | Monocot root | 4. | Dicot root |
The given transverse section is of:
| 1. | Monocot stem | 2. | Dicot stem |
| 3. | Monocot root | 4. | Dicot root |
Match the following
| A. | Cuticle | i. | guard cells |
| B. | Bulliform cells | ii. | single layer |
| C. | Stomata | iii. | waxy layer |
| D. | Epidermis | iv. | empty colourless cell |
| 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 |
Parenchymal cells have ________ walls and are made up of _____________.
1. Thick, cellulose
2. Thin, cellulose
3. Thick, hemicellulose
4. Thin, hemicellulose
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