Questions and Answers

Explain the importance of nitrate ions for making amino acids, required for the production of proteins

Identify and label the cuticle, cellular and tissue structures of a dicotyledonous leaf, as seen in diagrams or photomicrographs, and explain how these structures are adaptations for photosynthesis and gas exchange, limited to: (a) stomata and guard cells (b) spongy and palisade mesophyll cells (c) air spaces (d) vascular bundles (xylem and phloem) (e) distribution of chloroplasts (f) upper and lower epidermis

State that most leaves have a large surface area and are thin, and explain how these features are adaptations for photosynthesis

Identify and explain the limiting factors of photosynthesis in different environmental conditions

Investigate the effect of varying light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis using submerged aquatic plants and hydrogencarbonate indicator solution

Describe and explain the effect of varying light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis

Investigate the need for chlorophyll, light and carbon dioxide for photosynthesis, using appropriate controls

State the word equation and balanced chemical equation for photosynthesis

Outline the subsequent use and storage of the carbohydrates made in photosynthesis, limited to: (a) starch as an energy store (b) cellulose to build cell walls (c) glucose used in respiration to provide energy (d) sucrose for transport through the plant

State that chlorophyll transfers light energy into chemical energy for the formation of glucose and other carbohydrates