Duration: 03:13

An explanation of how leaves are adapted for photosynthesis. An animation of the internal structure of a leaf is seen.

The screaming jelly baby demonstration is used as a stimulus for a discussion of the energy content of foods.

Duration: 04:44

Knowledge of limiting factors affecting the rate of photosynthesis has enabled commercial plant growers to manipulate growing conditions and improve quality and yield in the crop plants.

Duration: 05:16

Julius von Sachs carried out experiments on leaves using iodine to demonstrate that light is needed for plants to make starch.

Duration: 01:34

A brief introduction to the structure of plants. The functions of the parts of plants are discussed and photosynthesis is mentioned.

A definition and description of photosynthesis through rap and practical demonstration.

Duration: 02:34

A comprehensive introduction to photosynthesis in plant leaves. The equation for photosynthesis is shown.

Duration: 01:36

Definition of the photosynthesis equation, identifying raw materials and products.

Duration: 01:14

An animated description of the process of plant photosynthesis.

Duration: 03:12

An explanation of photosynthesis explaining the reactants and products, where the process occurs and its importance to plants.

Duration: 01:51

An explanation of the equation for photosynthesis. The difference between photosynthesis and respiration is discussed.

Duration: 04:38

A recreation of Jan Ingenhousz' experiment demonstrating the production of oxygen from plants.

Duration: 02:06

An explanation of the three limiting factors in photosynthesis. Graphs of the rate of photosynthesis are explained.

Duration: 02:26

An explanation of the uses of photosynthesis products for plants and humans.

Duration: 05:30

The work of Benson and Calvin established the biochemical processes involved in the light independent pathways of photosynthesis.

Duration: 03:39

Kate Humble and Chris Packham explain why leaves change their colour in autumn.