1. Carbohydrates, oxygen, carbon dioxide, water, heat and lightare all participants in the
processes of respiration and photosynthesis. Write an equation toshow the substrates
and products of each process.
2. Photorespiration occurs in illuminated green leaves. Describephotorespiration in broad
terms, why it only happens in the light, and what cost it imposeson C3 plants.
3.Rising atmospheric CO2 levels are predicted to favour particularphotosynthetic types
(recall C3, C4 & CAM photosynthesis) relative to others. Plantsof which type are likely to
benefit from rising CO2 levels, and why?
4.Define the concept of plant ecological strategy
5. What do the C, S and R stand for in Grimes triangular C-S-Recological strategy scheme?
What traits might characterise a species in the \"S\" corner of thescheme?
6. List three key ecological advantages of seeds.
