Plants & Photosynthesis
What is the formula for water?
H2O
What are the products of photosynthesis (what is being made)?
True or false: Plants are green because chlorophyll absorbs green wavelengths of light.
T/F. Animals that only eat meat, such as lions, would not be affected if all plants went extinct.
False. Lions eat animals that rely on plants to survive. Without plants, the lion's food source would die, eventually causing the lions to starve.
This is located inside the chloroplast and absorbs wavelengths from the sun. It reflects green which gives plants their green appearance.
Hint* Chloro_____
What is chlorophyll?
Photosynthesis uses sunlight, carbon dioxide, and ______ to produce oxygen and glucose.
What is water/H2O?
When the sun shines light on a plant, the leaves can make food from carbon dioxide and what other molecule?
Water!
Name something that could affect how well a plant is able to perform photosynthesis.
*Think about homeostasis*
-Temperature (too hot or too cold)
-Amount of carbon dioxide present
-Amount of water
-Amount of light
-Nutrients in the soil
T/F. The products of photosynthesis are glucose, oxygen, and carbon dioxide.
False. The products of photosynthesis are glucose and oxygen. NOT carbon dioxide.
Does photosynthesis require energy?
Photosynthesis is a process that requires energy because there are many steps and molecules involved in turning sunlight into energy. [RAREHOG]
What is the main goal of photosynthesis?
To create energy in the form of glucose.
The plant keeps the glucose and gets rid of the oxygen.
True or false: Plants require oxygen to undergo photosynthesis. They release carbon dioxide from their leaves.
False: Plants require carbon dioxide to undergo photosynthesis. They release oxygen from their leaves.
T/F. The sun is our main source of energy.
True! All of the food we eat originates from the sun (either directly or indirectly).
Besides the Cell membrane, What other organelle protects the plant cell?
cell wall
What plant organelle does photosynthesis occur in?
What is the chloroplast?
Can humans survive without plants? Why or why not?
No! We need plants to survive. Plants give organisms food & oxygen.
What are autotrophs? Provide an example along with your explanation.
Organisms that can create their own food. Plants are examples of autotrophs.
Why can't humans get their energy from photosynthesis?
1. We get our energy from the food we eat. We do not get our energy from the sun.
2. We do not have chloroplast!
What are all 3 requirements for photosynthesis? (What do plants need for photosynthesis to happen)
1. Sunlight
2. Carbon dioxide
3. Water
Are plants autotrophs (create their own food) or heterotrophs (need to eat other living things) and why?
Plants are autotrophs because they can create their own food.
Heterotrophs cannot create their own food.
How does photosynthesis allow some plants to survive in the winter?
Plant more trees. Trees take carbon dioxide out of the air to use for photosynthesis. Trees then release oxygen into the air.
List the 3 requirements and 2 products from photosynthesis.
Reactants:
1. Sunlight
2. Carbon dioxide
3. Water
Products:
1. Glucose
2. Oxygen