Q. No.Identify the wrong statement in context of heartwood:
1. Organic compounds are deposited in it
2. It is highly durable
3. It conducts water and minerals efficiently
4. It comprises dead elements with highly lignified walls
1. Organic compounds are deposited in it
2. It is highly durable
3. It conducts water and minerals efficiently
4. It comprises dead elements with highly lignified walls
Which of the following is made up of dead cells?
1. Xylem parenchyma
2. Collenchyma
3. Phellem
4. Phloem
The vascular cambium normally gives rise to
| 1. | Phelloderm | 2. | Primary phloem |
| 3. | Secondary xylem | 4. | Periderm |
Secondary xylem and secondary phloem in dicot stem are produced by
1. Apical meristems
2. Axillary meristems
3. Phellogen
4. Vascular cambium
Plants having little or no secondary growth are
| 1. | Grasses | 2. | Cycads |
| 3. | Conifers | 4. | Deciduous angiosperms |
Cuticle:
1. is a covering, both outside and inside of the epidermis
2. is well developed in roots
3. helps in prevention of water loss
4. is a proteinaceous layer
In a dicot stem, the pericycle is present on the inner side of the endodermis and:
| 1. | above the phloem, in form of semi-lunar patches of sclerenchyma |
| 2. | above the xylem, in form of semi-lunar patches of sclerenchyma |
| 3. | above the phloem, in form of semi-lunar patches of collenchyma |
| 4. | above the xylem, in form of semi-lunar patches of collenchyma |
In a dicot root, initiation of lateral roots and vascular cambium during the secondary growth takes place in the cells of:
| 1. | Outer cortex | 2. | Inner cortex |
| 3. | Endodermis | 4. | Pericycle |
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