Transport in the phloem of the plant
- Created by: lavithedemon
- Created on: 11-04-16 13:20
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- Transport in the phloem of the plant
- Plants transport organic compounds from sources to sinks
- phloem is composed of sieve tube cells
- sieve plates - perforated walls
- associated with companion cells
- phloem transports organic compounds throughout the plant
- translocation
- links parts of the plant lacking sugars with ones that have a surplus
- phloem is composed of sieve tube cells
- active transport is used to load organic compounds into phloem sieve tubes at the source
- phloem loading - bring sugrs into the phloem
- apoplast route
- concentration gradient of sucrose established by active transport
- created by H positive ions are transported out of the companion cell
- the build of ions flows down to its concentration gradient
- energy created used to bring the sugar into the companion cell - sieve tube complex
- the build of ions flows down to its concentration gradient
- created by H positive ions are transported out of the companion cell
- concentration gradient of sucrose established by active transport
- symplast route
- the diffusion of sugars through plasmodesma
- apoplast route
- phloem loading - bring sugrs into the phloem
- incompressibility of water allows transport by hydrostatic pressure gradients
- Plants transport organic compounds from sources to sinks
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