Q. No.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
Which of the following is true for lenticels
| 1. | lens shaped opening |
| 2. | occur in most woody trees |
| 3. | permit exchange of gases |
| 4. | All of the above |
The function of lenticels are
| 1. | exchange of gases |
| 2. | helps in transpiration |
| 3. | helps in vegetative reproduction |
| 4. | Both a and b |
In dicot root the complete ring of vascular bundle is formed by
(1)conjunctive tissue
(2)pericycle
(3)Endodermis
(4)Both A and B
© 2025 GoodEd Technologies Pvt. Ltd.