| Column-I | Column-II | ||
| A. | Bull form cells | I. | Initiation of lateral roots |
| B. | Pericycle | II. | Root |
| C. | Endarchxylem | III. | Grasses |
| D. | Exarch xylem | IV. | Dicot leaf |
| E. | Bundle sheath cells | V. | Stem |
A) A-II; B-V; C-IV; D-I; E-IV
B) A-II; B-V; C-I; D-III; E-IV
C) A-II; B-IV; C-I; D-III; E-V
D) A-III; B-I; C-V; D-II; E-IV
Correct Answer: D
Solution :
[d] A - Bull form cells: They are large, bubble- shaped, empty colourless epidermal cells that occur in groups on the upper surface of the leaves of many grasses. B - Pericycle: It is a thin layer of plant tissue between the endodermis and the phloem. Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells. C - Endarch xylem: When protoxylem lies towards the centre (pith) and metaxylem lies towards the periphery of the organ, it is called endarch xylem. This type of xylem occurs in stems. D - Exarch xylem: When protoxylem lies towards the periphery and metaxylem lies towards the centre, it is called exarch xylem. This type of xylem occurs in roots. E - Bundle sheath cells: They are layer of cells in plant leaves and stems that forms a sheath surrounding the vascular bundles. These cells are found in dicot leaf.
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