Module: Photosynthesis
DCI: LS1.C (A) Plants, algae (including phytoplankton), and many
microorganisms use the energy from light to make sugars (food) from carbon
dioxide from the atmosphere and water through the process of photosynthesis,
which also releases oxygen. These sugars
can be used immediately or stored for growth or later use.
PS3.D (A) The chemical reaction by which plants produce complex
food molecules (sugars) requires an energy input (i.e. from sunlight) to
occur. In this reaction, carbon dioxide
and water combine to form carbon based organism molecules and release from
oxygen.
PE: MS-LS1-6 Construct a scientific explanation based on evidence
for the role of photosynthesis in the cycling of matter and flow of energy into
and out of organisms.
[Clarification
Statement: Emphasis is on tracing movement of matter and flow of energy.]
[Assessment Boundary: Assessment does not include the biochemical mechanisms of
photosynthesis.]
The basic elements of the content related to this standard are as follows.
- All kinds of plants (including microscopic ones) do photosynthesis
- Photosynthesis uses light energy to make sugars from CO2 (from the atmosphere) and water (H2O) and produces, along with the sugars, oxygen
- Plants use or store the sugar they make.
- Photosynthesis can be understood as a chemical reaction in which CO2 and H2O combine to make some sort of carbon-based molecule and O2.
Student mastery should include the ability to construct an explanation of photosynthesis, based on evidence.
Possible Question Starters:
-Which of the following is the most accurate summarization of the process of photosynthesis?
-What is the source of carbon that plants use to form organic compounds in photosynthesis?
-For plants, the purpose of photosynthesis is -
We can ask questions about the chemical equation of photosynthesis
We can ask questions about the evidence that might lend support to the various aspects of photosynthesis. These could include any of the following.
-Evidence that light is required
-Evidence that CO2 is consumed
-Which of the following is the most accurate summarization of the process of photosynthesis?
-What is the source of carbon that plants use to form organic compounds in photosynthesis?
-For plants, the purpose of photosynthesis is -
We can ask questions about the chemical equation of photosynthesis
We can ask questions about the evidence that might lend support to the various aspects of photosynthesis. These could include any of the following.
-Evidence that light is required
-Evidence that CO2 is consumed
-Evidence that O2 is produced
-Evidence that sugar is produced
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