Q. No.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
The shape of the vascular bundle is __________in the beginning and later it becomes ___________in dicot root.
(1)wavy, circular
(2)circular, wavy
(3)circular , rectangular
(4)wavy, and trapezoid
In dicot roots, secondary phloem is formed towards the _________ and secondary xylem is formed towards the __________ by the activity of vascular cambium.
(1)periphery, centre
(2)centre, periphery
(3)innerside, outerside
(4)Both B and C
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