Q. No.___________ arrangement of vascular bundle is a characteristic of dicot stem.
1.
Ring
2.
Radial
3.
Centric
4.
Peripheral
| 1. | Ring | 2. | Radial |
| 3. | Centric | 4. | Peripheral |
A large number of rounded, parenchymatous cells with large intracellular spaces which occupy the central position of stem constitute the __________.
| 1. | Lumen | 2. | Pith |
| 3. | Cortex | 4. | Vascular bundle |
Phloem parenchyma is absent in
| 1. | Dicot stem |
| 2. | Monocot stem |
| 3. | Vascular bundle |
| 4. | Both A and B |
In dicot leaves the ________ epidermis generally bears more stomata than the _________ epidermis.
| 1. | Abaxial, adaxial |
| 2. | Adaxial, abaxial |
| 3. | Axial, coaxial |
| 4. | Coaxial, axial |
The tissue between the upper and lower epidermis is called
| 1. | Chlorophyll | 2. | Mesophyll |
| 3. | Cambium | 4. | Endodermis |
Mesophyll in dicot leaves has two type of cell namely_________.
| 1. | Palisade parenchyma and spongy parenchyma |
| 2. | Pith and Protoxylem |
| 3. | Xylem and phloem |
| 4. | Epidermis and endodermis |
Vascular bundles are surrounded by a layer of thick walled ________.
1. Bundle sheath cells
2. Cuticle
3. Casparian strip
4. Waxy cell
In monocot leaf
| 1. | Stomata is present on both surface of epidermis |
| 2. | Mesophyll is not differentiated into palisade and spongy parenchyma |
| 3. | There is no parenchyma |
| 4. | Both 1 and 2 |
In grasses certain adaxial epidermal cells along the vein modify themselves into large, empty, colourless cells called ________.
| 1. | Bark |
| 2. | Bulliform cells |
| 3. | Bundle sheath cells |
| 4. | Spongy mesophyll cells |
Bulliform cells help in
| 1. | Heat resistance |
| 2. | Minimizing water loss |
| 3. | Maintaining ion balance |
| 4. | Mineral acquisition |
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