Plant Transport Flashcards
What is a xylem vessel
Xylem vessels are long hollow chains of tough long dead xylem cells. Xylem tissue is the water transporter cells of plants. It carries water around a plant. The presence of vessels is a characteristic feature of flowering plants.
What is a phloem vessel
Phloem, also called bast, tissues in plants that conduct foods made in the leaves to all other parts of the plant. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.
What is transpiration
Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves. An example of transpiration is when a plant absorbs water in its roots.
What is a transpiration stream
In plants, the transpiration stream is the uninterrupted stream of water and solutes which is taken up by the roots and transported via the xylem to the leaves where it evaporates into the air/apoplast-interface of the substomatal cavity. It is driven by capillary action and in some plants by root pressure.
What is translocation
Chromosomal translocation, that is a chromosomal segment is moved from one position to another, either within the same chromosome or to another chromosome.Transport of soluble food material from one plant to another via phloem or xylem.
