GCSE Combined Science (AQA)

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Transpiration Use in Plants

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Organisation Plant Tissues, Organs and Systems

Transpiration Use in Plants

2:41 Investigating Transpiration
Spec 4.2.3.2
Previous Root Hair Cells Next Factors Affecting Transpiration
  • Transpiration in plants is not necessary to describe specifically but understanding the reasons for various plant processes is useful.
  • Transpiration helps transport water and mineral ions within the plant.
  • It involves the evaporation of water from leaves, leading to water movement from roots to leaves via osmosis.
  • This water movement is crucial for photosynthesis.
  • Water and mineral ions are transported through the xylem from roots to stems and leaves.
  • Photosynthesis uses sunlight energy to convert water and carbon dioxide into glucose.
  • Water also helps maintain plant structure by keeping it upright.
  • Water in plant cell vacuoles helps keep cells turgid, providing structural support.
  • The transpiration stream also transports mineral ions necessary for protein production and other essential molecules.
  • Plants use mineral ions like nitrates to form amino acids, vital for their growth.
  • For exams, it's important to know that plants compete for mineral ions, which are transported in the xylem.

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