Homeostasis in plants (Topic 14.2 CIE A-level bio)

This bundle covers the content of the 4 specification points in topic 14.2 of the CIE A-level biology specification, titled “Homeostasis in plants”. The 4 specification points concern the structure and function of guard cells as well as the role of abscisic acid and calcium ions in a plant’s response to water stress.

The plant biology topics can be poorly understood by students, so both lessons have been filled with understanding checks so students can constantly assess their progress and address any knowledge gaps that arise.