Search results
Results from the WOW.Com Content Network
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.
The Great Banyan Tree at IBG Kolkata is an example how prop-roots help in vegetative reproduction. Stilt roots – From upright (erect) trunks, some hard, thick, almost straight roots come-out obliquely and penetrate the ground. Thus they act like a camera-tripod. They increase balance and support as well as, when these roots penetrates the ...
Ornamental plants with tuberous roots include the Persian buttercup, Ranunculus asiaticus, [6] and dahlias. [7] When sold in the dry form, dahlia "bulbs" consist of a cluster of tuberous roots attached to one or more stems. Only the stems produce buds, from around the "collar" close to where the roots are attached.
Many species form stem-roots. With these, the bulb grows naturally at some depth in the soil, and each year the new stem puts out adventitious roots above the bulb as it emerges from the soil. 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 ...
Buttress roots vary greatly in size from barely discernable to many square yards (square meters) of surface. The largest for which there is photographic evidence is a Moreton Bay Fig ( Ficus macrophylla ) at Fig Tree Pocket (an outlying district of Brisbane , Queensland ) which was photographed in 1866 with an adult man.
Lilioideae genera are relatively homogeneous and distinct from the other two Liliaceae subfamilies (Calochortoideae and Streptopoideae).They are perennial herbaceous flowering plants that are mainly bulbous (Lilieae) with contractile roots, but may be rhizomatous (Medeoleae).
Of the fifteen genera within the Liliaceae, the ten genera of the Lilioideae subfamily form one morphological group that is characterised by contractile bulbs and roots, and a Fritillaria-type embryo-sac (megagametophyte with four megaspores).