Explaining the Effects of Temperature, Wind Speed & Humidity: Extended (CIE IGCSE Biology: Co-ordinated Sciences (Double Award))

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Cara Head

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Cara Head

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Explaining the Effects of Temperature, Wind Speed & Humidity: Extended

Extended Tier Only

  • Wind speed, humidity and temperature all have an effect on the rate at which transpiration occurs
  • The table below explains how these factors affect the rate of transpiration when they are all high; the opposite effect would be observed if they were low

Transpiration Rate Factors Table

transpiration-factors-table

Wilting: Extended

Extended Tier Only

  • If more water evaporates from the leaves of a plant than is available in the soil to move into the root by osmosis, then wilting will occur
  • This is when all the cells of the plant are not full of water, so the strength of the cell walls cannot support the plant and it starts to collapse

A wilted plant cannot support itself and starts to collapse, IGCSE & GCSE Biology revision notes

A wilted plant cannot support itself and starts to collapse

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Cara Head

Author: Cara Head

Expertise: Biology

Cara graduated from the University of Exeter in 2005 with a degree in Biological Sciences. She has fifteen years of experience teaching the Sciences at KS3 to KS5, and Psychology at A-Level. Cara has taught in a range of secondary schools across the South West of England before joining the team at SME. Cara is passionate about Biology and creating resources that bring the subject alive and deepen students' understanding