Occurs when two species live closely together in a relationship that lasts over time.
What is symbiosis.
100
What is the one thing that our ecosystem cannot live without and what plants use to produce food.
the sun
100
This is the bottom of the energy pyramid. It has the most organisms in an ecosystem.
producers
100
Cells that HAVE a nucleus are called....
eukaryotes
200
A non-living factor in an ecosystem is called....
abiotic
200
Nemo and his dad, both silly clownfish, live in a sea anemone. The type relationship they have with the sea anemone is this.
The clownfish get protection from predators and the sea anemone get food.
What is mutualism (both protect each other from predators and provide food for each other in some way).
200
These animals eat only producers.
What is an herbivore.
200
What are organisms in an energy pyramid called that eat the organisms below them?
consumers
200
Which body system tells the rest of our body what to do?
nervous system
300
A food web is made up of a bunch of different _____ ______ put together.
food chains
300
The tapeworm lodges itself in the intestines of a human, it steals the humans vitamins and nutrients that are digested.
What type of symbiosis is this?
Parasitism
300
These organisms are like "recyclers" in the ecosystem. They break down and absorb dead or waste materials.
What are they called?
decomposers
300
What are the first consumers called that eat the producers?
primary consumers
300
Name one organelle that a plant cell has that an animal cell does not have.
cell wall, chloroplast, vacuole
400
What are organisms called that eat plants and animals?
omnivores
400
Many species of orchids (flower) attach themselves high up onto the trunks of trees to be safe and to have constant rain water. The trees don't seem to mind.
This is what type of a relationship?
What is commensalism
400
These are organisms that consume only other animals.
carnivores.
400
What type of organisms do not really have a spot on the energy pyramid but affect every level and are very important to the pyramid.
decomposers
400
An organism that makes its own food is called an...
autotroph
500
Put these in order from SMALLEST to LARGEST: biosphere, community, ecosystem, organism, population
organism -> population -> community -> ecosystem -> biosphere.
500
In the Lion King Scar gets ready to eat the parrot, what kind of relationship is this?
Predation.
500
Here is a food chain:
sun-->grass-->mouse-->snake-->hawk
Which organism would have to exist in the lowest numbers for this food chain to be sustained?
The hawk
500
If the bottom of the energy pyramid has 2000 kcal of energy how much would be left after 2 levels?
20 kcal
500
What type of variable is the one that the scientist controls in the experiment.