A
What is a carnivore?
An organism that eats only meat.
What is an herbivore?
An organism that eats only plants.
A small fish will eat other smaller fish, or algae from a lake. It is known as an ___
omnivore
Can an organism be part of more than one food chain? A) no, because it cannot be predator and prey at the same time B) no, because the arrows in a food web can only flow in one direction C) yes, because it can be prey for more than one organism D) yes, because it may live in more than one environment
C) yes, because it can be prey for more than one organism
Which type of organism is a fungus? A) carnivore B) omnivore C) herbivore D) decomposer
D) decomposer
What is a consumer?
An animal that eats plants or other animals.
What is a decomposer?
An organism that breaks down dead or decaying plant or animal material.
Consider this food chain: grass=> grasshopper=> mouse => snake Which organism is an herbivore?
Grasshopper
Consider this food chain: acorns=> squirrels=> hawks Which of these is the producer?
Acorns
Why are decomposers important organisms in a food web? A) They produce oxygen. B) They prey on carnivores. C) They are food for producers D) They return nutrients to the soil
D) They return nutrients to the soil
What is a producer?
An organism that makes its own food.
A network of food chains that have some links in common.
Food web
Consider this food chain: blackberries=> bird=> cat Which organism is the carnivore?
Cat
In a Mississippi swamp, alligators and great blue herons eat fish. Which type of organism is the great blue heron? A) decomposer B) carnivore C) herbivore D) producer
Carnivore
Consider the food chain: grass=> grasshopper=> frog=> snake What would happen in the ecosystem if the grasshopper population died? A) snakes would eat the grasshopper B) it would be fine, frogs prefer other insects anyway C) it would be fine, the grass population would increase D) the frog population would die from the decrease in their food supply
D) the frog population would die from the decrease in their food supply
What is an omnivore?
An organism that eats both plants and animals.
What is competition?
The struggle between organisms for the same resource.
Why are decomposers important organisms in a food web? A) They produce oxygen. B) They prey on carnivores. C) They are food for producers D) They return nutrients to the soil
D) They return nutrients to the soil
Which of the following organism is a secondary consumer in the food chain? A) hawk B) gorilla C) squirrel D) earthworm
A) hawk
A certain type of bear mainly eats trout. If the trout population declines, what will most likely happen to the bear population? A) it will decrease B) it will increase C) it will remain the same D) it will increase and then decrease
A) it will decrease
What is a food chain?
A diagram that shows the flow of energy from one organism to another.
How does the food chain start again after the decomposer does its' job? A) because the decomposer spreads the seeds B) because the decomposer must constantly stay busy to stay alive C) because the decomposer breaks the dead or decaying organism down and the nutrients go back into the soil, causing any seeds that have been dispersed a good environment to reproduce D) because the decomposer does not totally break the organism down and some of the organism is still alive
C) because the decomposer breaks the dead or decaying organism down and the nutrients go back into the soil, causing any seeds that have been dispersed a good environment to reproduce
Plants in this biome can have spines to discourage animals from eating the plants for water or waxy coating on stems and leaves to help reduce water loss.
The desert biome
An aquatic biome having low salt concentrations, for example lakes, rivers, wetlands.
The freshwater biome
Plants in this biome are usually short, bunched together, have sap that keeps them from freezing.
Tundra