Question

what are veins tell me someone please​

Answer 1

Veins in human body :

• Veins carry blood from body organs to heart.
• The walls of vein are thin.
• The lumen is more for vein.
• Valves are present in veins.
• There is low pressure in veins.
• It carries de-oxygnated blood.
• If blood is not present in veins they collapse.

Veins in leaves :

• Veins in leaves consists of both phloem and xylem.
• They are embedded in parenchyma sometimes sclerenchyma and surrounded by bundle sheath cells.
• The vein xylem transports water.
• The phloem transports sugars out of the leaf to the rest of the plant.

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