Photosynthesis N4 Flashcards
What is photosynthesis?
The process carried out by green plants to make their own food using light energy
What is glucose?
The energy rich sugar made by green plants in photosynthesis that can be stored as starch
What are chloroplast?
Site of photosynthesis in plant cells
What is chlorophyll?
The green pigment in chloroplasts that absorb light energy for the process of photosynthesis
What do plants use carbon dioxide and water to produce?
Glucose and oxygen
Where does the energy for photosynthesis come from?
The sun
What is light energy converted to in glucose, and how?
Chemical energy using chlorophyll
What makes a leaf greener?
The amount of chloroplasts it has
If a leaf has more chloroplasts what can it do better?
Light absorption
What is the word equation for photosynthesis?
See flashcard 1a
What is the glucose made by photosynthesis used for?
For the plant to grow
What is starch?
Storage carbohydrate in plants
What is cellulose?
Substance that cell walls are made from
What are producers?
Green plants that make their own food by photosynthesis
What are consumers?
Animals that obtain their energy by eating other organisms
What are herbivores?
Animals that only eat plants?
What are carnivores?
Animals that only eat other animals
What is a food chain?
A diagram that shows how food energy moves from one organism to another
What is a food web?
A diagram showing feeding relationships made up of many interconnected food chains
What would happen if plants and photosynthesis weren’t a thing?
All life on earth would eventually die
What does almost every food chain and food web start with?
Green plants acting as producers
What do plants take in?
Carbon Dioxide to stop the level in the atmosphere rising to high
What are limiting factors?
Factors which if in short supply can limit the rate of photosynthesis
What can photosynthesis be affected by?
Temperature
How can photosynthesis rate be measured?
By measuring the volume of oxygen released by an aquatic plant
How do farmers prevent limiting factors?
Irrigation systems, artificial lighting, adding carbon dioxide to the atmosphere, heating
