No they do not contain a nucleus.
The chloroplasts.
Tracheids Vessels Xylem parenchyma Xylem fibres
Xylem vessels
Vascular plants. Xylem and Phloem are the vascular system of plants. If you compare it with humans, they're the blood vessels...sort of Xylem transports water, Phloem transports nutrients
xylem and phloem
Mosses
vessel elements, tracheids, fibres, and parenchyma
there are two types of vessels or tubes in the stem of a plant; xylem vessels transport water and minerals from the roots, up through the stem of the plant. they are made up of dead cells, and in trees they are seen as wood phloem tubes carry the sap (sugars, cytoplasm, hormones, etc.) from the leaves to wherever they are needed for growth or repairs.
the elements are :- tracheids, vessels xylem fibres and xylem parenchyma.
1. Cells are rectangular 2. Contain dense cytoplasm 3. Tend to divide periclinally to form phloem and xylem
Pits are essentially holes in the xylem walls. Xylem walls are lignified by lignin, a material impermeable to war. The pits allow water to flow between xylem vessels of the plant - this is known as cross flow.