Biotic/Abiotic
A non-living organism in an ecosystem
What is an Abiotic Factor
An organism that only eats meat
What is a carnivore
This is the source of all energy on earth.
What is the sun
A mouse relies on grains in a food chain. If all the grain dies out what will happen to the population of mice?
What is decrease
How are bacteria classified in a forest ecosystem?
a. as consumers
b. as decomposers
c. as herbivores
d. as producers
b.as decomposers
A living organism in an ecosystem
What is a Biotic factor
An organism that only eats plants/producers
What is a herbivore
These are organisms that make their own food and are always the first organism in a food chain.
What are producers
A terrestrial ecosystem that is wide open with very little trees and a lot of grass.
What is a grassland ecosystem
Which organisms would most likely be found in oceans and estuaries?
a. grass and bison
b. oak trees and deer
c. sea grass and turtles
d. cactus and rattlesnakes
c. sea grass and turtles
A rock is an example of this
What is an Abiotic factor
An organism that eats both plants and animals
What is an omnivore
These types of organisms break down dead things and returns nutrients to the ground.
What are decomposers.
This diagram shows a simple ocean food chain:
algae -> fish -> seal
Which will most likely occur if the fish population decreases?
a. The algae and seal population will decrease
b. The algae and seal population will increase
c. The algae population will increase, and the seal population will decrease
d. The algae population will decrease, and the seal population will increase
c. The algae population will increase, and the seal population will decrease
A tree is an example of this
What is a biotic factor
A tertiary or third level consumer is usually one of these
What is a carnivore
Food chains show the flow of ___________ in a straight line.
What is energy
A model that not only shows the flow of energy, but also the amount of energy available in an ecosystem.
What is an energy pyramid.
Why are animals like deer, racoons, bears, and coyotes sometimes seen in neighborhoods?
a. because it is easier to find food
b. because they can escape predators
c. because their habitats are increasing
d. because their habitats are decreasing
d. because their habitats are decreasing
True or False: An ecosystem is the interaction of abiotic and biotic factors.
What is True.
A primary or first level consumer has to be either an _________ or an _____________.
When food chains overlap and show a more accurate flow of energy in an ecosystem, it is called a __________ ___________.
What is a food web.
In an energy pyramid, there must always be a larger amount of ______________ at the base or bottom.
What are producers.
Which is an example of a terrestrial organism relying on an aquatic organism for food?
a. eagles consume fish to survive
b. birds consume worms to survive
c. fish consume seaweed to survive
d. frogs consume flying bugs to survive
a. eagles consume fish to survive