Find 'em here: http://www.aspb.org/PlantBioCoreConcepts
Here are two examples:
• Plants growing in various environments have a diversity of structures for acquiring and retaining water, exchanging gases, optimizing photosynthesis, and supporting growth and reproduction.
Learning objective: Compare and contrast the structures by which vascular and non-vascular
plants obtain and retain water, allow for gas exchange for photosynthesis, and allow for long-distance internal transport of water.
• Plants cycle oxygen and carbon dioxide through photosynthesis and respiration.
Learning objective: Create a diagram that illustrates the flow of oxygen and carbon dioxide through photosynthesis and respiration in an ecosystem.