Photosynthesis experiment

Numéro d’image : 11613812
Photosynthesis experiment
Photosynthesis experiment. Student carrying out an experiment to investigate photosynthesis. The vials have been filled with water and algal balls,made from a mixture of algae and sodium alignate (a gum extracted from brown algae). A bicarbonate indicator has been added that changes colour as the pH changes due to the production of carbon dioxide during photosynthesis. The vials are then placed in various conditions,such as in different light intensities and in the dark,along with a control with no indicator used. The colour changes allow deductions to be made about how light levels influence photosynthesis
Licence : Droits gérés
Crédit: Science Photo Library
Taille de l’image : 4250 px × 4250 px
Model Release : Non requis
Property Release : Non requis
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