MCQ
Vascular bundles in monocotyledons are considered closed because
- Athere are no vessels with perforations
- Bxylem is surrounded all around by phloem
- Ca bundle sheath surrounds each bundle
- ✓cambium is absent.
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| Column $- I$ | Column $- II$ |
| A- Tapetum | i- Degenerate during development |
| B- Intine | ii- Resistant organic materials |
| C- Vegetative cell | iii- Pollen tube |
| D- Sporopollenin | iv- Provide nourishment to pollen grains |