A sieve plate is a perforated wall between the sieve elements in vascular plants. They are the outer end wall of a sieve tube element, and contain many pores through The vascular system is absolutely essential for the life of a plant, as nutrients would not be able
Best Answer: Sap, the watery fluid with dissolved substances that travels through vascular tissues both xylem and phloem , is transported through phloem in elongated tubes, called sieve tubes, formed by chains of living cells called sieve tube members.
The sieve tubes have sieve plate and sieve areas on their transverse end walls. The sieve tube consists of longitudinally files of cells that are connected with each other through sieve areas on their transverse end walls. The cell wall is usually primary composed
Sieve tubes are present in primary and secondary phloem and accordingly they originate from procambium and cambium respectively The sieve tube that has a long end wall with numerous sieve areas is considered as primitive. Small pores in the sieve plate
Ø Both are the sieve elements a category of phloem cells . Ø Both sieve cells and sieve tubes transport food materials. Ø Both are living cells. Ø Both cells have thin primary cell wall secondary thickening absent . Ø Both contain dense granular protoplasm. Ø Nucleus is absent in both sieve cells and sieve tubes.
Sieve tubes consist of sieve elements which are elongated cells, connected to each other via sieve plates to form a continous tube system that spreads out through the entire plant. Sieve plates are end walls containing large pores to provide a connection
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