A) Presence of little pith or absent
B) Radial vascular bundles
C) Presence of 15-20 vascular bundles
D) Secondary growth
Correct Answer: C
Solution :
The vascular tissue in monocotyledonous root consists of alternating strands of xylem and phloem. The xylem forms discrete strands alternating with phloem strands. The centre is occupied by large pith. The bundles are numerous and referred as polyarch. The cambium is absent therefore, secondary growth is not found. Difference between dicot and monocot root:| Dicotyledonous Root | Monocotyledonous Root | |
| 1. | The xylem bundles varies from two to six | They are usually numerous |
| 2. | Pith is small or absent | Pith large and well developed |
| 3. | Pericycle gives rise to lateral roots and secondary meristem i.e., cambium and cork-cambium | It gives rise to lateral roots only |
| 4. | Cambium appear as secondary meristem | It is altogether absent |
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