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24 Σεπ 2024 · The cells are joined end to end and contain holes in the end cell walls (called sieve plates) which allow easy flow of substances from one cell to the next. The transport of sucrose and amino acids in the phloem, from regions of production to regions of storage or use, is called translocation.
Distinguish between sources and sinks and provide examples of each. Explain the process of phloem loading, distinguishing between apoplastic and symplastic pathways. Explain how assimilate translocations through the phloem according to the pressure-flow hypothesis. Plants need an energy source to grow.
Translocation starts at a source, such as a leaf where sugars are made. Sugars are transported into phloem by active transport across the membranes of the living phloem cells. Water moves into the phloem cells by osmosis, which increases the pressure and pushes the sugars along the phloem tube.
The stem, root and leaves form an organ system that transports substances into, around and out of a plant. The leaves are the main organ of photosynthesis. Part of Combined Science Transport...
Translocation is the movement of assimilates around the plant from the source to the sink. Translocation is bidirectional, so dissolved solutes can move either up or down the plant. The phloem consists of sieve tube members and companion cells, which carry out translocation.
2 Ιουν 2022 · Although translocation could refer to the transport of substances in the xylem and phloem, as it means ‘moving from one place to another,’ it is more commonly connected with the transport of assimilates in the phloem tissue.
21 Νοε 2023 · Translocation has a simple definition: the transport of materials from one place to another. Translocation in plants would be defined as the transport of materials from the...
