A tree can be killed by removing its bark, as this also removes the ________.
| 1. | Phelloderm only | 2. | Phellem only |
| 3. | Primary xylem | 4. | Secondary phloem |
Choose odd with respect to collenchyma
| 1. | Living mechanical tissue |
| 2. | Intercellular space is absent in angular type |
| 3. | Thickening of the wall is due to deposition of lignin |
| 4. | Found in hypodermis of dicot stem |
Select incorrect statements from the given below:
| (i) | Endodermis with Casparian strips are found in the dicot stem. |
| (ii) | The endodermis is a part of the stele. |
| (iii) | Open vascular bundles are found in some monocots. |
| (iv) | Bulliform cells are found in the upper epidermis in the isobilateral leaf. |
| 1. | (i) and (ii) |
| 2. | (ii) and (iii) |
| 3. | (i), (ii) and (iii) |
| 4. | Only (iv) |
Select incorrect statement with respect to the anatomy of monocot stem
| 1. | Parenchymatous ground tissue is extended from the bottom of hypodermis to center |
| 2. | Hypodermis is made of thick-walled living mechanical tissue |
| 3. | Vascular bundles are conjoint, collateral and closed with endarch xylem |
| 4. | Pith is absent |
In parenchyma, all cells are isodiametric and
| 1. | Thin-walled |
| 2. | Thick-walled |
| 3. | Lignified-walled |
| 4. | Devoid of intercellular spaces |
In which character an isobilateral leaf differs from the dorsiventral leaf?
| 1. | Scattered vascular bundles |
| 2. | Undifferentiated mesophylls |
| 3. | Absence of stomata with guard cells |
| 4. | Conjoint, collateral, and closed vascular bundle |
Tissue which provides mechanical strength and flexibility to young dicot stem is present in
| 1. | Pith | 2. | Endodermis |
| 3. | Hypodermis | 4. | Cortex |
The ground tissue system is constituted by all off these, except
| 1. | Medullary rays | 2. | Pericycle |
| 3. | Mesophyll | 4. | Xylem |
Conjoint, collateral, closed vascular bundles without phloem parenchyma are found in plants which have
| 1. | Differentiated ground tissue in the stem |
| 2. | Dedifferentiated pericyclic structure in the mature root |
| 3. | Sclerenchymatous hypodermis in stem |
| 4. | Developed pith in stem |
The tissue belonging to bark but not to periderm is
1. Vascular cambium
2. Secondary phloem
3. Phellem
4. Secondary cortex