Photosynthesis
Learning intention
• We are going to learn about
photosynthesis and factors necessary
for the process of photosynthesis
Success criteria
• the importance of photosynthesis
relation with living things
Key competencies
• Thinking critically and creatively
Shared values
• Preserving diversity:
appreciate the richness of our native habitat
and their fragility; recognise ways of balancing
how to enjoy them today and conserve them for
the future.
photosynthesis
• Plants can make their own food with the help of sunlight,
water, carbon dioxide and chlorophyll.
• This type of nutrition is called autotrophic nutrition and the
process of manufacturing food is called photosynthesis.
photosynthesis
• The word ‘photo’ means ‘light’ and ‘synthesis’ means ‘to
combine’
• The food thus produced is then transported throughout the
plant body and stored in different parts like leaves, stems
and roots.
• The by-product of photosynthesis is oxygen, the gas that
animals use in respiration
photosynthesis
Factors necessary for photosynthesis
• The factors necessary for photosynthesis are
• carbon dioxide,
• water,
• sunlight and
• chlorophyll
• Carbon dioxide from the air enters the leaves through
small openings on the surface of leaves known as the
stomata.
• Water is an essential raw material required for
photosynthesis. Roots absorb water and is carried
through vessels in the stem to the leaves.
• Sunlight provides energy to the plant, which helps to
produce glucose from the raw materials
• Chloroplasts are the tiny structures in plant cells
where photosynthesis takes place. Chloroplasts
contain chlorophyll, a green pigment that absorbs
light energy for photosynthesis.
Formula for photosynthesis
Learning intention
• We are going to learn
• Importance of photosynthesis process
• Activity to prove the byproduct of photosynthesis is
oxygen
Success criteria
• We will be successful if we can
• understand how important the process of
photosynthesis for our existence
• Understand the activity to prove release of oxygen
during photosynthesis
Key competencies
• Thinking critically and creatively
Shared values
• Preserving diversity:
appreciate the richness of our native habitat
and their fragility; recognise ways of balancing
how to enjoy them today and conserve them for
the future.
Importance of photosynthesis
• Plants give us oxygen:
During photosynthesis plants take in carbon dioxide and
give off oxygen as a by product, which is used by humans
and animals.
Plants give us food:
• Animals and humans depend on plants
for food. Most of the food they eat
comes directly or indirectly from plants.
• Plants give us clothes:
The cells of some plants produce fibres, which can be spun
and woven into fabrics.
Plants give us medicines:
Different parts of several types of plants are used to
produce medicines
Activity that proves plants release oxygen
during photosynthesis
• video