Basics
Sunlight & Pigments
Structure
Energy & Reactions
Common Misconceptions
100

This process allows plants to make their own food.

What is photosynthesis?

100

This is what plants would struggle to get on cloudy days.

What is sunlight?

100

This part of the plant is where most photosynthesis happens.

What are the leaves?

100

At night, plants undergo these reactions because sunlight isn’t available.

What are light-independent (dark or Calvin Cycle) reactions?

100

Some students think plants “breathe in” oxygen like animals. What gas do they actually take in during photosynthesis?

What is carbon dioxide?

200

This organelle is where photosynthesis takes place.

What is the chloroplast?

200

Plants appear green because this pigment reflects green light.

What is chlorophyll?

200

Organisms that must consume their food.

What are heterotrophs?

200

Photosynthesis transforms light energy into this type of energy.

What is chemical energy?

200

People often believe plants get their food from soil, but they really make it using these two ingredients and sunlight.

What are carbon dioxide and water?

300

This gas is taken in by plants during photosynthesis.

What is carbon dioxide?

300

The chlorophyll in leaves absorbs this form of energy.

What is sunlight (or light energy)?

300

This structure contains chlorophyll and is where sunlight is absorbed.

What is the chloroplast?

300

The two main ingredients plants use to gain mass or weight.

What are water and carbon dioxide?

300

If a plant had no sunlight for several days, what process would slow down or stop first?

what is Photosynthesis?

400

This gas is released after photosynthesis and used by humans to breathe.

What is oxygen?

400

This is the most important thing plants need for photosynthesis.

What is sunlight?

400

These are organisms that make their own food.

What are autotrophs?

400
This is the location of light-dependent reactions.

What is thylakoid?

400

Some students believe plants use energy directly from sunlight. What molecule is that energy actually stored in?

What is glucose OR ATP?

500

This is the sugar made by plants for energy.

What is glucose?

500

The amount of each element in the reactants of photosynthesis equals the amount of each element in the products of the same reaction. Which law is this evidence of?

What is the law of conservation of mass?


500

These help regulate gas exchange and water loss in leaves.

What are stomata?

500

When we consume carbohydrates, what does our body break them down into?

What is sugar?


500

If a plant is placed in a sealed container with plenty of water but no access to carbon dioxide, what reaction stage of photosynthesis would stop first, and why?

What is the production of glucose, because carbon dioxide is a necessary ingredient for the light-independent (Calvin cycle) reactions? (close matches accepted)

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