Photosynthesis and Larry the Leaf

We looked at photosynthesis and what plants need.
We talked about how leaves take in sunlight and need water and take in carbon dioxide (which humans breathe out). We discussed that the leaves produce glucose for the plant to grow and produce oxygen for humans to breathe in.

Thomas wrote the descriptions of what is happening in the comic strip pictures that I drew.

Here is the science.

What Do Plants And Crops Need To Grow?
  • Sunlight
  • Carbon Dioxide (CO2)
  • Water (H2O)
  • Nutrients
  • Correct Temperature
Plants and crops absorb water (H2O) through their roots.
This water (H2O) absorption is the means by which plants and crops gather nutrients from the soil.
Temperature can affect the levels of water (H2O) absorption and nutrient intake.
Photosynthesis is the process by which plants and crops make their food using sunlight, water (H2O) and carbon dioxide (CO2).
Photosynthesis takes place in the leaf cells (chloroplasts).
The leaf cells (chloroplasts) contain a green pigment (chlorophyll) that absorbs energy from the sunlight.
Carbon dioxide (CO2) in the air enters the leaves through the leaves (stomata).
This intake of carbon dioxide (CO2) is called respiration.
The absorbed energy (sunlight) is used to break up the carbon dioxide (CO2) and water (H2O) molecules to produce sugar glucose and oxygen (O2).
The sugar feeds the plants and crops and helps them to grow.
The system of veins in the leaves and stem allows the sugar glucose to travel to all parts of the plants and crops.
Oxygen (O2) is also produced during photosynthesis.
Oxygen (O2) is a waste product and is released into the air via the leaves (stomata).
This release of oxygen (O2) is known as respiration.

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