Photosynthesis and cellular respiration Grade 8

Photosynthesis and
cellular respiration
Grade 8

,Photosynthesis


► Plants use energy from the Sun to make glucose.
► Is a chemical process where green plants use energy from
sunlight to convert carbon dioxide gas and water to
glucose.
► carbon dioxide + water processed with chlorophyll and
sunlight equals glucose and oxygen.
► Chlorophyll and sunlight are needed for this process.

,What is Chlorophyll
► It’s a green pigment that absorbs energy from sunlight.
Definitions to know
Photosynthesis – the process that a plant creates food
Chlorophyll – green pigment the uses energy to make food
Pigment – natural coloring of a plant animal
By product – secondary product made from the original
process

, Requirements for photosynthesis


► Needs: Sunlight provides energy for the process.
► Chlorophyll: absorbs sunlight energy
► Carbon dioxide gas: absorbed through small openings on
the surface of the leaves
► Water absorbed from soil and moves from the roots to the
leaves