Food Webs
What is the first organism that eat the plants called?
primary consumer
What does a food chain look like?
A straight line up the trophic levels.
What is on the first layer of the pyramid?
producers
What is a predator?
Where do plants get their energy from?
the sun
How should you layer your organisms when making a food web?
First producers, then primary consumers, and then everything else (secondary, tertiary, etc.)
How do you tell a food web and a food chain apart?
A food chain is a straight line and a food web has branching areas and multiple sources of food.
What can a food pyramid tell you?
The relative energy and biomass at each level.
What is an herbivore?
only consumes plants
What is abiotic mean? And what is an example?
Non-living factor ex. sun or temp
How do food webs show a more complete picture of an ecosystem?
They show how there are multiple food sources and relationships for each organism.
What is the last thing on your food chain?
The top predator that does not get eaten by anything else.
Are food pyramids for one ecosystem at a time or many?
One
How are an omnivore and a carnivore different?
Omnivores eat both meat and plants and a carnivore only eats meat.
What is a decomposer?
Feeds on dead plant and animal matter, breaks it down
What happens if you take out a producer in a food web?
The web would fall apart because of the lack of food at the base.
What do the arrows on a food chain represent?
The flow of energy
Why are food pyramids wider at the bottom?
There is more biomass at the bottom.
How do you know if something is a heterotroph?
It must consume other organisms to survive.
What does a trophic level mean?
The level hierarchy in the food chain of animals that share the same role.
What is the term for the effect of taking out a top predator in a food web?
Trophic cascade
How do you know what direction the arrows go in?
They should go from the thing that is being eaten to the thing that is eating it.
Are there any relationships in a food pyramid like there are in a food web?
Not directly, no
How do you tell if something is a predator or a prey?
It is relative depending on which organism you are talking about in relation to
How much energy is passed onto the next level and what is the rule called?
The 10% rule because 10% is passed on.