Biology A (Salters-Nuffield) A-Level
Phloem sieve tubes
What Phloem sieve tubes means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Phloem sieve tubes
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Reference: Pearson Edexcel
Tubes with sieve plates and companion cells, located in the outer part of each vascular bundle.
Topics that use Phloem sieve tubes
- Topic 4: Biodiversity and Natural Resources (Pearson Edexcel A-Level)
Related terms
- Adaptation and speciation
- Allele frequency change over time
- Amyloplast
- Aseptic technique
- Binary fission
- Biodegradability
- Calcium and magnesium in plant structure and function
- Cellulose
Using Phloem sieve tubes in the exam
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