Cork cambium gives rise
| 1. | cork | 2. | phelloderm | 
| 3. | phellem | 4. | All of the above | 
Periderm comprises of
| 1. | Phellem | 2. | phellogen | 
| 3. | phelloderm | 4. | All of these | 
The dead cells which are formed towards the epidermis by cork cambium are called as
| 1. | cork | 2. | phellem | 
| 3. | phelloderm | 4. | Both A and B | 
The chloroplast containing parenchymatous cells which are formed towards the innerside by cork cambium are called as
| 1. | secondary cortex | 2. | phelloderm | 
| 3. | phellem | 4. | Both A and B | 
Which one is true for phellogen
| 1. | thick layer cells | 
| 2. | narrow, thin walled and nearly rectangular cells | 
| 3. | gives rise to phellem and phelloderm | 
| 4. | All of the above | 
Incorrect match is
| 1. | Phellogen = cork cambium | 
| 2. | Phellem = Cork | 
| 3. | Phelloderm=cortex | 
| 4. | Phelloderm=Secondary cortex | 
In plants the replacement of the outer cortical and epidermal layers when they are broken are because of the
| 1. | Cork cambium | 2. | vascular cambium | 
| 3. | Phellogen | 4. | Both A and C | 
The cork is impervious to ______due to __________deposition in the cell wall.
| 1. | water, suberin | 2. | water, lignin | 
| 3. | water, wax | 4. | water, cellulose | 
Bark non-technically refers to tissues which lies
| 1. | exterior to vascular cambium | 
| 2. | exterior to cork cambium | 
| 3. | exterior to primary phloem | 
| 4. | All of the above | 
How many of the followings constitute the bark?
( secondary phloem, secondary cortex, cork cambium, complimentary cells, epidermis, periderm )
(1)6
(2)5
(3)4
(4)3