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Topic 2
Branches and Leaves
Science
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Photosynthesis
Green leaves make a plant’s food.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Photosynthesis
They use the energy of sunlight, gas from the air and water to make sugar. This process is called photosynthesis.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Photosynthesis
To do this leaves must face towards the sun.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Leaves and Air
Leaves help the plant breathe as it grows.
You breathe in and out through your nose and mouth.
A plant breathes through its leaves.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Leaves and Water
Leaves pull water and minerals through the plant.
Water and minerals are taken in at the plant’s roots and pulled up the stem to every part of the plant.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Leaves and Water
Water moves through the plant from the roots, up the stem and branches and out through the leaves.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Leaves and Branches
As a tree grows, branches grow out from its stem (trunk).
Leaves grow from the branches.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Leaves and Branches
As a plant gets bigger it needs more food and more air, so it must grow more leaves.
It grows more branches so that the leaves are spread out and do not shade each other.
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
Branches and Leaves
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
branchesfood breathe
Branches and Leaves
SAC – P4/SciencePB/Wendy Wallace Zerafa/Oct2013
Topic 2
THE END