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Xylem is a type of vascular tissue in plants. There are both xylem and phloem that operate to move material thru the plant.
the Xylem are like tubes that carry water and minerals up from the roots of the plant.
the Phloem on the other hand are tubes that distribute sugars, amino acids and other organic stuffs.
but specifically in the LEAF (from wiki:)
"Transpirational pull: the most important cause of xylem sap flow is the evaporation of water from the surfaces of mesophyll cells to the atmosphere. This transpiration causes millions of minute menisci to form in the mesophyll cell wall. The resulting surface tension causes a negative pressure or tension in the xylem that pulls the water from the roots and soil."
...meaning basically: when the water evaporates off the leaf (mesophyll layer) it causes a lower pressure in the xylem and so that pressure actually "pulls" the water from the roots to the surface. so basically it shows one way in which the xylem tube functions: by transpirational (=>evaporative) pull.
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∙ 13y ago
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Could you tell the difference between a xylem and a phloem in a plant just by looking at the direction in which substances move in these tissues?
No; they're both hidden in the vein, plus, the substances in each the xylem and phloem travel upward. The xylem carries water absorbed by the plant's roots up into the leaf, and the phloem carries the food made during photosynthesis upward throughout the plant;
Could you tell the difference between the xylem and phloem in a plant just by looking at the direction in which substances move in these tissues?
No; they're both hidden in the vein, plus, the substances in each the xylem and phloem travel upward. The xylem carries water absorbed by the plant's roots up into the leaf, and the phloem carries the food made during photosynthesis upward throughout the plant;
What makes up the majority of the tissue on a leaf?
xylem
What is the part of the leaf containing the xylem and Phoenix?
Cortex
Which tissue in the leaf supplies water to the cells for photosynthesis?
The Xylem.
What is the scientific term for the vein of the leaf?
The scientific term for the vein of a leaf is Xylem and phloem.
Where is the xylem and phloem located in a leaf structures?
Xylem and phloem are located in the vascular bundles in midrib and mesophyll of the leaf.
What is the scientific term for the vein of a leaf?
The scientific term for the vein of a leaf is Xylem and phloem.
What is the definition of a plant vein?
a vein that carries material in or out of a leaf. there are two parts, phloem and xylem which bring material in and out. xylem bring water and minerals up to the leaf, while the phloem is taking the unwanted and bring it out of the leaf to the stem where it can bring the unwanted stuff out of the flower
What is the purpose of leaf veins?
each vein contains xylem to bring water and minerals containing sap into the leaf and each leaf has phloem that carries sap of manufactured food ut of the leaf.
What comprises vein?
The conducting tissues - xylem and phloem.
Could you tell the difference between a xylem and a phloem in a plant just by looking at the direction in which substances move in these tissues?
No; they're both hidden in the vein, plus, the substances in each the xylem and phloem travel upward. The xylem carries water absorbed by the plant's roots up into the leaf, and the phloem carries the food made during photosynthesis upward throughout the plant;
Could you tell the difference between the xylem and phloem in a plant just by looking at the direction in which substances move in these tissues?
No; they're both hidden in the vein, plus, the substances in each the xylem and phloem travel upward. The xylem carries water absorbed by the plant's roots up into the leaf, and the phloem carries the food made during photosynthesis upward throughout the plant;
What is the part of the leaf containing the xylem and the phloem?
Cortex
Which part of the flower takes water to the leaf?
the xylem
What is the part of the leaf containing xylem and phloem?
Cortex
What makes up the majority of the tissue on a leaf?
xylem
