In cell biology, an organelle (/ ÉËr É¡ É Ë n É l /) is a specialized subunit within a cell that has a specific function. Individual organelles are usually separately enclosed within their own lipid bilayers.
Salix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground.It grows to 30-50â (sometimes to 60â) tall and as wide. It is native to China.ark is gray-black. Branchlets are typically green or brown. This weeping willow can be a spectacular specimen at the edge of a pond with its branches gracefully weeping down to touch the water, however, it is often very difficult to site this tree in a residential landscape.
The beauty of the weeping willow, and its dense shade, makes it an enticing tree to plant in the home landscape, but it is susceptible to numerous pests and diseases. Borers, caterpillars, scale and lacebugs are common problems, as are canker, branch blight, root rot, rust and sooty mold.he weeping willow constantly sheds leaves and twigs and has weak branches that can break off in storms and damage nearby structures; its numerous roots can make it impossible to work the soil beneath it to plant flowers or groundcover.