WHAT GOES IN / COMES OUT
What two things must enter a plant for photosynthesis to happen?
CO2 and Water
What part of the plant mostly performs photosynthesis?
Leaves
What is Photosynthesis?
The process that uses energy from the sun to make food from water and carbon dioxide
“Plants get their food from the soil.” What’s wrong with this?
Plants make food (glucose) through photosynthesis; soil provides water and minerals
What would happen if chlorophyll were missing from a plant?
Plant would not absorb light energy effectively
Where does carbon dioxide come from for a plant?
Humans and animals breathing
What organelle inside plant cells performs photosynthesis?
Chloroplast
What is chlorophyll?
The pigment that absorbs and stores the energy of sunlight
“Oxygen is needed for photosynthesis.” True or false? Explain.
False. Oxygen is made.
What happens if a plant receives very little light?
Photosynthesis decreases
What gas is released during photosynthesis?
Oxygen
What green pigment inside chloroplasts captures light energy?
Chlorophyll
What are stomata?
The tiny pores in the bottom of leaves that take in carbon dioxide from the air
“Plants make energy during photosynthesis.” What’s the correction?
Plants turn light into food
What happens to photosynthesis if stomata close?
Carbon dioxide can’t enter, so photosynthesis slows or stops
What important thing for photosynthesis comes from the soil, and which comes from the air?
Soil = water
Air = CO2
What is the formula for photosynthesis?
H2O + CO2 → O2 + C6H12O6
What is glucose?
The food (sugar) that plants make.
“Photosynthesis happens only during the day because plants sleep at night.” What’s incorrect?
Plants don't sleep.
Why do plants grow toward light sources?
To increase photosynthesis
If a plant is kept in sunlight but has no carbon dioxide, what happens to photosynthesis?
Photosynthesis stops
Can photosynthesis happen in green stems? Why or why not?
Yes, because they contain chloroplasts
How does photosynthesis help our atmosphere?
It absorbs carbon dioxide which cleans up the atmosphere
“Chlorophyll and chloroplast are the same thing.” Why is this wrong?
Chlorophyll is the pigment inside of chloroplast.
In a closed container with sunlight, water, CO2 and plants, what happens to oxygen over time?
Oxygen increases due to photosynthesis