what produces primary xylem?
Xylem
The word xylem is derived from the Greek word ξύλον (xylon), meaning "wood"; the best-known xylem tissue is wood , though it is found throughout the plant.
Xylem Evolutionary history of plants Botany Chloroplast Tree Leaf History of life Soil Marine life Cavitation Nerve guidance conduit Evidence of common descent Metal–organic framework Glossary of baseball terms Insect morphology Siphon Decompression theory Transpiration Respiratory system Development communication Physiology of decompression Cactus Ecology Photosynthesis Biology Plant nutrition Water Supercapacitor Fungus Alkali metal List of Supernatural characters Lepidodendrales List of Supernatural and The Winchesters characters History of botany Water on Mars Cathode-ray tube Permian–Triassic extinction event Light in painting Plant evolutionary developmental biology History of Earth Graphene Lichen History of chemistry Blockade of Germany (1939–1945) Joseph Lister Carnivorous plant Frog Ozone Diving rebreather Physiology of underwater diving Wood Gas exchange Health effects of electronic cigarettes Plant cell Mammal Cambrian explosion Root Amphibian South African labour law Red 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