Photosynthesis Notes

Photosynthesis Notes

By Rachel Davis

Some people think that the plant food they give to house and garden plants is food for the plants. It isn’t.

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Plants make their own food—in the form of sugars—using water, carbon dioxide, and sunlight. So what is the “food” that people add to plants? It’s fertilizer. Fertilizer is a mixture of minerals, such as potassium, calcium, and phosphorus. It helps plants grow but doesn’t supply them with energy as food does.

When is Food Not Food?

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Review

Plants are organisms that make their own food (glucose, a simple sugar) through photosynthesis.​

Some text here about the topic of discussion

Multiple Choice

Organisms, such as plants and algae, that make their own food are called......

• Heterotrophs

• autotrophs

• vegetarian

Reactants and Products​

The "ingredients" that are needed for a green plant to make it's own food are called reactants. These reactants are...

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1. Water - absorbed from the soil

2. Carbon dioxide (co2) from the air​

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NOTE: while light energy from the sun is required to undergo photosynthesis, it is not technically considered a reactant. ​

Chlorophyll absorbs most of the colors of the visible light spectrum except green, which is reflected

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Photosynthesis

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Multiple Choice

What internal structure is responsible for transporting water from the roots throughout the rest of the plant?

• Stems

• Phloem

• leaves

• xylem

Multiple Select

What 3 "ingredients" are needed for photosynthesis to occur? Check all that apply.

• Light energy from the sun

• Oxygen

• Carbon Dioxide

• Water

Multiple Choice

What are reactants?

• "ingredients" necessary to undergo photosynthesis

• something that is produced by the plant during photosynthesis

• Something that is helpful, but not necessary, for a plant to undergo photosynthesis

Products of Photosynthesis

Two products are made during photosynthesis. The products are a result of the chemical reaction that occurs inside the plant.

These products are...

1. Glucose (a simple sugar)

2. Oxygen (YAY! just what we need!)​

Multiple Choice

What internal structure is responsible for transporting food throughout the plant?

• Stems

• Phloem

• leaves

• xylem

Products of Photosynthesis

Glucose is transported through the plant as sugar. Plants can also turn this glucose into starch that can be stored and used later.

Products of Photosynthesis

Oxygen is a product released during photosynthesis. The oxygen moves out of the plant through the stomata. This process puts oxygen back into our atmosphere. ​

Multiple Choice

What are the products of photosynthesis? Check all that apply.

• Carbon Dioxide

• Oxygen

• Water

• Glucose

The process of photosynthesis can be written as an equation!

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Did You Know?

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Equation:

Add this to your notes!

Think Time: Part 1

Draw a diagram to show the process of photosynthesis. Use the vocabulary from this lesson to label the diagram.

Think Time: Part 2

With a partner, share your diagram and what you learned about photosynthesis.

Be prepared to share!​

Multiple Choice

In what way does plant nutrition differe from human nutrition?

• Plants make their own nutrients; humans must consume theirs.

• Plant nutrition consists mainly of protein; human nutrition consists mainly of carbohydrates.

• Plants consume nutrients; humans produce theirs.

• Both plants and animals must consume their nutrients.

Multiple Choice

Which of the following do plants gain from sunlight?

• Carbon Dioxide

• Energy

• Sugar

• Water

Multiple Choice

What might happen if plants could not produce glucose?

• They would not be green

• They could not grow and function

• They could not absorb energy from the sun

• They would not have leaves

Multiple Choice

Which part of the human body is most similar to stomata in plants?

• The heart

• The brain

• Lungs and airways

• Fingers and toes

Multiple Choice

If you were looking for chloroplasts, in which of the following could they be found?

• The fruit

• The roots

• The stems

• The leaves

Multiple Choice

What is chlorophyll?

• A cell in which chloroplasts are found

• A cell in which water is released

• a green pigment that absorbs radiant energy

• a green pigment that absorbs food

Multiple Choice

Chlorophyll traps energy from sunlight and stores it as what kind of energy?

• Kinetic energy

• Thermal Energy

• Radiant Energy

• Chemical Energy

Multiple Choice

Photosynthesis is the process in which _______________

• plants tak in oxygen and produce carbon dioxide

• plants release water into the atmosphere

• plants absorb water from the ground

• plants make their own food, simple sugar, to survive