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These roots have some ability to absorb water and nutrients, but their main function is transport and to provide a structure to connect the smaller diameter, fine roots to the rest of the plant. Contractile roots: roots that pull bulbs or corms of monocots, such as hyacinth and lily, and some taproots, such as dandelion, deeper in the soil ...
In some other species, contractile roots seem to be a defence against digging animals and can bury the corm surprisingly deeply over the years. Wurmbea marginata [ 4 ] is one example of a small plant that can be challenging to dig unharmed out of a hard, clayey, hillside.
Epiphytic root – This type of root seen in epiphytic orchids. The thick root hangs from the plant's base directly into air. The root is covered with a special, usually 4- to 5-cell layer thick, [12] spongy tissue (called Velamen), which helps the plant to absorb moisture from the atmosphere. Epiphytic orchid have another sort of root, called ...
These roots are in addition to the basal roots that develop at the base of the bulb, a number of species also produce contractile roots that move the bulbs deeper into the soil. [6] Lily, petal. The flowers are large, often fragrant, and come in a wide range of colors including whites, yellows, oranges, pinks, reds and purples.
The corms produce fibrous roots, and contractile roots which adjust the corms depth in the soil, which may be pulled as deep as 20 centimetres (8 in) into the soil. [4] [5] The roots appear randomly from the lower part of the corm, but in a few species, from a basal ridge. [6]
The Liliaceae are characterised as monocotyledonous, perennial, herbaceous, bulbous (or rhizomatous in the case of Medeoleae) [7] flowering plants with simple trichomes (root hairs) and contractile roots. [8] The flowers may be arranged (inflorescence) along the stem, developing from the base, or as a single flower at the tip of the stem, or as ...
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Tuberous roots lack a definite shape; example: sweet potato. Fasciculated root (tuberous root) occur in clusters at the base of the stem; examples: asparagus, dahlia. Nodulose roots become swollen near the tips; example: turmeric. Brace roots arise from the first few nodes of the stem. These penetrate obliquely down into the soil and give ...