Photosynthesis Quizlet by Lexi Moore
6CO2 + ____ ----with light energy and chlorophyll ----> C6H12O6 + 6O2
6H2O
What is chlorophyll?
A green pigment found in the chloroplasts of plants as well as in algae and some bacteria.
6CO2 + 6H2O ----with light energy and chlorophyll ----> _______+ 6O2
C6H12O6
At this time what gas enters the leaf?
CO2
What gas do humans provide for a plant to use?
CO2
What gas does a plant provide for humans to use?
Oxygen
Describe Phloem
Vascular tissue through which food moves through plants.
An average size tree produces enough oxygen to keep (how many?) people alive?
2-4
____ + 6H2O ----with light energy and chlorophyll ----> C6H12O6 + 6O2
6CO2
What is the full chemical equation (formula) for photosynthesis?
6CO2 + 6H2O ----with light energy and chlorophyll ----> C6H12O6 + 6O2
6CO2 + 6H2O ----with light energy and chlorophyll ----> C6H12O6 + ___
6O2
Describe the process of photosynthesis.
A plant uses carbon dioxide gas and water to make food and oxygen. The process occurs in a series of complex chemical reactions. Sunlight provides the energy that powers the entire process.
What is the full equation using words for photosynthesis?
Carbon dioxide + water ----with light energy and chlorophyll ----> glucose/sugar + oxygen
Describe Palisade Layer
Contains upper leaf cells which have chloroplasts that trap the energy in sunlight for photosynthesis
During photosynthesis, what is stripped from the water molecules?
H atoms
What molecule is now formed once again?!
H2O
Can a plant stay alive without light?
In general, no because plants need sunlight to photosynthesize (make their own food). However, scientist John Bayer kept corn kernels alive for 5 days by giving them sugar water.
Can a plant produce CO2 without sunlight?
No
Can a plant survive without oxygen?
No because the plant needs "some" oxygen to break down food it fed itself from photosynthesis. It needs oxygen to break down the carbohydrate molecures to release the energy stored in these molecules. Without oxygen and sunlight, the plant will die from starvation!
Describe Stomata
Small openings on the underside of most leaves where carbon dioxide enters and oxygen and water vapor exits.
CO2 enters leaf through "holes" called __________?
Stomata
Describe chloroplasts
Structure of plant cells in which food is made. Found in the palisade layer Shaped like green jelly beans
Describe Xylem
Vascular tissue (looks like tubes) that carries water/nutrients absorbed by plant's roots up into leaf.
What role do Stomata play in Photosynthesis?
allows CO2 to enter the leaf while allowing O2 and water to leave leaf; provides CO2 and carries it to chloroplasts to help in photosynthesis
What role does Phloem play in Photosynthesis?
carries food (sugar) to other parts of plant
What role does Xylem play in Photosynthesis?
carries water to chloroplasts to help in photosynthesis
Photosynthesis is how plants make ________?
food
What other molecule is also formed at this time?
glucose
What role does Palisade Layer play in Photosynthesis?
home for the chloroplasts where photosynthesis occurs
Water molecules in plants come from what two places?
leaf cells and below (ground surface -- i.e. roots)
6CO2 + 6H2O ----with ___________________ ----> C6H12O6 + 6CO2
light energy and chlorophyll
The stripped molecules form pairs. Where does it go after this?
out of leaf to surrounding atmosphere
From where does the cell get the energy to strip the H atoms off?
sunlight
What 3 main things does a plant need for photosynthesis to occur?
sunlight, water, CO2
What role do chloroplasts play in Photosynthesis?
traps energy in sunlight that powers photosynthesis; receives CO2 and water which along with sunlight photosynthesizes into food (sugar) and oxygen
