Secondary Growth
Question
Identify the statements as true (T) or false (F) w.r.t secondary growth in root and choose the correct option.
I. Vascular cambium is partially secondary in origin.
II. Vascular cambium is formed as continuous and complete but wavy ring.
III. Cork cambium arises from cortical cells.
| I | II | III | |
| 1 | T | F | F |
| 2 | F | T | T |
| 3 | T | T | F |
| 4 | F | T | F |
Easy
Solution
In the dicot root, the vascular cambium is completely secondary in origin. It originates from the tissue located just below the phloem bundles, a portion of pericycle tissue, above the protoxylem forming a complete and continuous wavy ring, which later becomes circular.
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