Which of the following statements is not true for stomatal apparatus?
1. | Inner walls of guard cells are thick |
2. | Guard cells invariably possess chloroplasts and mitochondria |
3. | Guard cells are always surrounded by subsidiary cells |
4. | Stomata are involved in gaseous exhange |
Dicot stem share a common feature with monocot stem that is both have
1. | Well developed large pith |
2. | Conjoint vascular bundles |
3. | Open vascular bundles |
4. | Pericycle and endodermis |
Identify the wrong statement in the context of cork cambium
1. Cork cambium is also called phellogen
2. Cork cambium is usually developed from the secondary xylem
3. Outer cells of phellogen differentiate into cork
4. Inner part of phellogen leads to the formation of phelloderm
Water containing cavities in the vascular bundle is a characteristics feature of
1. | Dicot roots | 2. | Monocot stems |
3. | Monocot leaves | 4. | Dicot stems |
Which of the following is related to tracheids?
1. | Deposition of suberin on cell wall |
2. | Found in gymnosperms only |
3. | Dead cell without protoplsm |
4. | Helps in radial conduction of water |
All of the given characteristics are related to parenchyma tissue except
1. Composed of living cells
2. Generally isodiametric cells
3. Cell wall is mainly made up of suberin
4. Either closely packed cells with no intercellular spaces or have small intercellular spaces
A plant tissue, when stained, showed the presence of hemicellulose and pectin in the cell walls of its cells. The tissue represents
1. | collenchyma | 2. | sclerenchyma |
3. | xylem | 4. | meristem |
The stomata are equally distributed on both the surfaces of the epidermis in
1. | Dorsiventral leaf |
2. | Dicot stem |
3. | Isobilateral leaf |
4. | Dicot root |
Which of the following plays an important role in lateral root growth in dicot root?
1. | Endodermis | 2. | Pericycle |
3. | Hypodermis | 4. | Intrafascicular cambium |
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 |