Food Webs
What is an organism called that can produce it's own food?
Producer
Oxygen
What is typically on the bottom of a food chain
Plants
What percentage of energy is transferred from each trophic level
10%
What is a carnivore
Producers (produce their own food)
How is a food web different than a food chain?
Food webs show a clearer picture of what environments are actually like
If my producer started with 2700 calories how many calories would be passed onto my primary consumer
270 (divide by 10)
When looking at a food web what is it showing us?
The energy transfer from one organism to another
What do plants need in order to complete photosynthesis?
Sunlight, water, nutrients from soil, carbon dioxide
What organisms are typically missing from a food chain but will be present in food webs?
Decomposers.
If my primary producer started with 4500 calories what would by secondary consumer receive in calories?
45 (two steps away from producer so divide by 100)
Give me an example of a decomposer
Fungi, bacteria
In an energy pyramid which level has the most available energy?
Producers
Give me an example of a food chain
plant-->primary consumer-->secondary consumer-->tertiary consumer
What would happen in our forest environment if there are too many deer?
They would over eat the grass and they would use up the natural resources so eventually they would die off until the environment was stable enough to support a larger number.
What is the difference between a secondary consumer and a tertiary consumer?
A tertiary consumer is typically at the top of a food web eating other animals. A secondary consumer may consumer both plants and animals
What are the two things a plant produces?
Sugar and Oxygen
What happens when you remove a species from a food chain?
What are the four things all living things need to survive
Water, shelter, food, space