Food Chains and Food webs

Producer

An organism that creates its own food, using photosynthesis. They include all plants and algae

Decomposers

Special group of consumers. They gain their energy by feeding on dead or decaying material

What happens during photosynthesis

Energy from the sun is transferred by light to the chlorophyll in the cells of a producer.

Carbon dioxide and water react to produce glucose

Glucose can then be converted into carbohydrates, fats and proteins

Photosynthesis equation

Carbon dioxide + water —> glucose + oxygen

Energy transfers

Consumers eat producers to obtain their energy

When the organism respires, the energy stored in food is transferred in the production of ATP (respiration)

Energy transfer equation

Glucose + oxygen —> carbon dioxide + energy (ATP)