Vocabulary
An organism that eats only meat.
Carnivore
An animal that eats plants or other animals.
A consumer
Consider this food chain: grass=> grasshopper=> mouse => snake Which organism is an herbivore?
Grasshopper
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
C) They return nutrients to the soil
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, because it can be prey for more than one organism
An organism that makes it's own food.
Producer
An organism that breaks down dead or decaying plant or animal material.
A decomposer
Consider this food chain: blackberries=> bird=> cat Which organism is the carnivore?
Cat
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
Which type of organism is a fungus? A) carnivore B) omnivore C) herbivore D) decomposer
D, decomposer
An organism that eats only plants.
Herbivore
A network of food chains that have some links in common.
A food web
Consider this food chain: acorns=> squirrels=> hawks Which of these is the producer?
Acorn
Which is true regarding an energy pyramid? A) carnivores occupy a larger level than herbivores B) herbivores occupy a smaller level than producers C) consumers occupy the level below producers D) producers and carnivores occupy the same level
B, herbivores occupy a smaller level than producers
When a frog eats a grasshopper, how much of the grasshopper's energy is transferred to the frog? A) 10% B) 25% C) 50% D) 90%
A, 10%
An organism that eats both plants and animals.
Omnivore
Gets its energy directly from the sun.
Producer
In which direction do the arrows go in a food chain or food web? A) from the food to the thing eating the food B) from the thing eating the food to the food
A) from the food to the thin eating the food
Which of the following organism is a secondary consumer in the food chain? A) hawk B) gorilla C) squirrel D) earthworm
A hawk
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 seed that have been dispersed a good environment to reproduce
A diagram that shows the flow of energy from one organism to another.
A food chain
An animal that hunts for food.
Predator
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
B) Carnivore
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
It will decrease
In a Mississippi swamp ecosystem, would you expect the alligator or fish population to be bigger? A) fish, because they feed more predators B) fish, because alligators can't see them very well C) alligators, because they are at the top of the food chain D) alligators, because they have to eat a lot
A, because fish feed more predators