Xylem
Videos
Xylem is one of the two types of transport tissue in vascular plants, the other being phloem; both of these are part of the vascular bundle. The basic function of the xylem is to transport water upwar
Photos showing xylem elements in the shoot of a fig tree (Ficus alba): crushed in hydrochloric acid, between slides and cover slips
A banded tube from the late Silurian/early Devonian. The bands are difficult to see on this specimen, as an opaque carbonaceous coating conceals much of the tube. Bands are just visible in places on the left half of the image – click on the image for a larger view. Scale bar: 20 μm
Tree
Videos
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody pl
Xylem
…high surface tension of water pulls the concavity outwards, generating enough force to lift water as high as a hundred meters from ground level to a tree's highest branches. Transpirational pull requires that the vessels transporting the water be very small in diameter; otherwise, cavitation would break…
Common ash (Fraxinus excelsior), a deciduous broad-leaved (angiosperm) tree
European larch (Larix decidua), a coniferous tree which is also deciduous
Tall herbaceous monocotyledonous plants such as banana lack secondary growth, but are trees under the broadest definition.
The Daintree Rainforest