Protoxylem is the first part of the primary vascular tissue in plants called xylem that matures. Its function is to transport water to the shoot in the early stages of the growth of the plant.
Metaxylem is a part of primary xylem that differentiates after the protoxylem.
Because sugar is transported through phloem and water is transported through xylem.
This is the vascular tissue xylem.
The Xylem of a plant transports water and some nutrients.
The Xylem of a plant transports water and some nutrients.
Xylem
xylem and ploem
Johan Sebastiaan Ploem was born on 1927-08-25.
It's in the stems not the flowers. Xylem and phloem are the pipes in a plant through which nutrients and water travel. Similar to the arteries and veins of a human. The xylem tubes are the pipes through which water and minerals travel from the roots up to every other part of the plant. The phloem are the pipes through which the food (glucose) travels from the leaves to every other part of the plant.
Because sugar is transported through phloem and water is transported through xylem.
Vascular cambium cells get energy from food supplied by ploem cells
Vascular plants have xylem
Water is transported by the xylem.
This is the vascular tissue xylem.
In Angiosperms , it is xylem vessels ( proto and meta xylem together ) , Xylem sclerenchyma and xylem parenchyma ; together form Xylem tissue ( That is why xylem is called a compound tissue ). In Gymnosperms , xylem vessels are replaced by Xylem tracheids . All other tings are almost the same .
primary xylem is primary in nature & is derived from procambium. But secondary xylem is secondary in nature and derived from fascicular cambium and interfascicular cambium. Primary xylem is differentiated into protoxylem and metaxylem, but secondary xylem has no such differentiation. In primary xylem vessels and tracheids are long and narrow, and vessels don't have tyloses, but in secondary xylem, vessels are blocked by tyloses, and vessels and tracheids are wider and shorter. Xylem fibres are more abundant in secondary xylem , and found in small numbers in primary xylem. Also unlike in primary xylem, secondary xylem has differentiated into sapwood & heartwood.
xylem and phloem
1. Centripetal xylem 2. Centrifugal xylem both types are involved in conduction