| 11. | Only new growth produces the aerial rootlets, called holdfasts, that help ivy cling.
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| 12. | White oak acorns should already show rootlets.
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| 13. | The nest cup is lined with fine rootlets, grass, and other soft material.
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| 14. | The nest is a cup of twigs, pine needles, grasses, and rootlets.
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| 15. | This bird makes a loose cup nest of grasses and rootlets placed in a bush.
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| 16. | It is usually made with grass, rootlets, hair, feathers, and twigs.
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| 17. | Rootlets are ranked from 1 ( mild ) to 4 ( severe ) for spasticity.
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| 18. | It has no wood stems or flowers, and has small rootlets instead of roots.
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| 19. | It climbs by means of aerial rootlets with matted pads which cling strongly to the substrate.
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| 20. | The severely abnormal rootlets are cut.
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