Lesson 1 Photosynthesis

Objectives:

Core

1. Describe photosynthesis as the process by which plants synthesize carbohydrates from raw materials using energy from light
2. State the word equation for photosynthesis as: carbon dioxide + water → glucose + oxygen in the presence of light and chlorophyll
3. State that chlorophyll is a green pigment that is found in chloroplasts
4. State that chlorophyll transfers energy from light into energy in chemicals, for the synthesis of carbohydrates
5. 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 in the phloem (e) nectar to attract insects for pollination
6. Explain the importance of: (a) nitrate ions for making amino acids (b) magnesium ions for making chlorophyll

Supplement

1. State the balanced chemical equation for photosynthesis as: 6CO2 + 6H2O → C6H12O6 + 6O2
2. Identify and explain the limiting factors of photosynthesis in different environmental conditions