UNDER CONSTRUCTION...2021 UPDATES LOADING...

5. Photosynthesis

Study & Master Life Sciences Learner's Book Page 145 - 161

Core Content

Photosynthesis

• process of photosynthesis using words and symbols:

the intake of raw materials, trapping and storing of energy, formation of food in chloroplasts and its storage.

The release of oxygen.

Mention only of light and dark phases (no biochemical details of light and dark phases are required);

• importance of photosynthesis:

release of oxygen, uptake of carbon dioxide from atmosphere, food production (trapping energy);

• effects of variable amounts of light, carbon dioxide and temperature on the rate of photosynthesis (brief discussion together with graphs).

• The role of carbon dioxide enrichment, optimum light and optimum temperatures in greenhouse systems to improve crop yields (link to environmental issues discussed later).

• Role of ATP as an important energy carrier in the cell.

GR 11 Photosynthesis.pdf

2. Activities to be completed

Act. 1 Testing for starch in leaves (page 147) - watch demonstration provided
Act. 2 Photosynthesis: Investigation 1 (page 148) - watch demonstration provided
Act. 3 Photosynthesis: Investigation 2 (page 148-149)
Act. 4 Photosynthesis Investigation 3 (page 149)
Act. 5 Factors affecting the process of photosynthesis (page 150-151)
Act. 6 Showing that oxygen is a product of photosynthesis (page 152)
Act. 8 The rate of photosynthesis (page 154)
Act. 9 Photosynthesis and changes in carbon dioxide concentration (page 155-156)
Act. 10 Factors that affect the rate of photosynthesis (page 156)
Act. 11 The way in which leaves are adapted for photosynthesis (page 157)
Act 12 The effects of light on growth (page 157-158)
Act 13 Growing tomatoes in greenhouses (page 159)