Green algae (Scenedesmus quadricauda) is an excellent example of a typical planktonic algae. In the biology lab, it makes a wonderful resource for demonstrating photosynthetis, but in the wider world, it offers potential for creating algal biofuels.

Practicals

• Photosynthesis - Resource: Photosynthesis using algae wrapped in jelly balls
• Eutrophication - Algal blooms and the effects of eutrophication 

Teaching Topics

• Photosynthesis
• Eutrophication

Description

Green Algae, Scenedesmus quadricauda

A good example of typical planktonic algae with a four to eight celled structure, which stays buoyant because of spines. Widely distributed across the UK. (information provided by Sciento)

Growing and sourcing

Obtaining: You can order a 50ml culture from Sciento which will need to be bulked up. You can no longer buy the enrichment medium but you can obtain the recipe from the resource Photosynthesis using algae wrapped in jelly balls.

Care: Blades advise a warm room and the use of algal growth medium. They recommend subculturing your supply every three weeks.

Curriculum Links   

GCSE

• AQA GCSE Science A C.1.7.2 - suggested practical
• AQA GCSE Science B 3.3.1.2 - suggested practical
• AQA GCSE Science B 3.5.3 theme 3, Improving our environment: algal blooms - Opportunity for practical

A-level

• AQA Biology AS/A2 3.4.3 - Opportunities for practicals
• Scottish Highers Unit 2 Metabolism - Photosynthesis experiments