Photosynthesis Flashcards
What is the most important way in which organisms interact?
In their search for food or energy.
What is the ultimate source of energy for all living things?
The Sun.
In what form does the Sun provide energy?
The Sun provides energy in the form of light and heat, which is known as radiant energy.
What is the process called where green plants convert radiant energy into a form of energy that living organisms can use?
Photosynthesis.
How does plants make food during photosynthesis?
In a series of chemical reactions.
What is the role of chlorophyll in photosynthesis?
It absorbs the radiant energy from the Sun.
What is the role of the roots in photosynthesis?
Absorb water from the soil.
What is the role of the leaves in photosynthesis?
Gases are absorbed and released through them.
What is glucose?
Glucose is a simple sugar that is used by the plant for food.
Give the equation for photosynthesis.
chlorophyll
carbon dioxide + water —————–> glucose + oxygen sunlight
Whoops the formatting isn’t right. Its meant to be chlorophyll on top of the arrow with sunlight underneath the arrow
Where is the potential energy stored?
It is trapped in the glucose.
What is the point of the potential energy stored in the glucose?
It is the fuel that plants use to do their work.
What happens when animals eat plants?
They consume the energy that the plants have made during photosynthesis.
What other chemical compounds can plants change glucose into?
Starch and cellulose.
What is the point of changing glucose into these other chemical compounds?
They are required by plants for different processes such as growth and reproduction.
Why do plants change glucose molecules into starch?
It is the chemical compound they use to store energy.
How is starch formed?
Many glucose molecules join together to form a molecule of starch.
What is the most important energy source that is needed to sustain life?
Sugar and starch. (It is food for humans and animals)
What is cellulose?
Cellulose is part of the cell walls of plant cells.
What is the purpose of cellulose?
It is a structural material that provides plants with support. It is the reason trees can grown so tall without falling over.
Give an example of human’s getting energy from photosynthesis.
- Photosynthesis takes place in the leaves of a carrot.
- Starch is stored in the carrot.
- Fin eat’s the carrot during English. (With his celery)
This is simply a guideline. Other examples are also valid
