The climate in the western parts of South Africa is harsh for plants. Rain falls in winter when it is cool, but the summers are dry, hot and windy. Under these conditions plants can lose a lot of water by transpiration through their leaves. If plants lose too much water, they will wilt and may eventually die.
Indigenous plants that grow in this Mediterranean climate are adapted to survive these dry summers. In this lesson, which
could form part of a broader study of plant adaptations, we will look specifically at how leaves are adapted to reduce the loss of water from plants.
Learning Outcome 2:
Constructing Science Knowledge The learner will be able to interpret and apply scientific, technological and environmental knowledge. Assessment Standard
Recalls meaningful information: makes and uses models of leaves to explain how leaves are adapted to reduce
Core Knowledge and Concepts
All organisms have adaptations for survival in their habitats (e.g. maintaining water balance).
The stomata activity used in this lesson was developed by Weston Barwise from the Two Oceans Aquarium