WorksheetsEcosystem test review
Total questions: 15
Worksheet time: 20mins
If there is a drought, what will happen to the lion population in the following food chain?
grass --> zebra --> lion
They will increase because there will be more zebra.
They will decrease because they have less food available.
They will remain the same.
They will decrease because the sunlight will kill them.
An animal eats berries and insects. What role does this consumer have?
herbivore
omnivore
carnivore
decomposer
Which has only biotic factors?
sunlight, wind, water
fungi, bacteria, dirt
moss, algae, leaves
tree, rocks, clouds
What kind of consumer is a dolphin?
carnivore
omnivore
herbivore
producer
Which is something that producers DO NOT do for the environment?
They provide oxygen to the air.
They provide food to herbivores and omnivores.
They use photosynthesis to change the sun's energy into useable energy.
They break down dead things into nutrients.
Which of the following helps return nutrients to the soil?
fungi
seaweed
lion
fern
Plants use abiotic factors like water and sunlight to change energy called photosynthesis. This best explains what . . .?
It explains why decomposers are not important.
It explains why the only thing an ecosystem needs is plants.
It explains why they are the first link in the food chain.
It explains why food chains need at least 3 links to work.
What is one reason decomposers are important?
They provide food to other herbivores.
They provide abiotic things for the atmosphere.
They provide nutrients for plants so they can grow.
They change the sun's energy into useable energy.
Which best describes bacteria?
decomposer
producer
consumer
herbivore
In the food chain, what will happen to the mice if the grasshoppers decrease?
Mice will increase.
Mice will decrease.
Mice will stay the same.
Mice will move to another biome.
In the food chain pictured, what will happen to other parts of the food chain if mice increase?
The grasshoppers will increase and plants will decrease.
The snakes will decrease and the grasshoppers will increase.
The snakes will decrease and the grasshoppers will decrease.
The grasshoppers will decrease and the plants will increase.
In the food web, what will happen if the frog population increases? (Take your time as you have 2 minutes to look at the picture.)
The grasshoppers will increase.
The snakes will decrease.
The owls will increase.
The grass will decrease.
What are the producers in this food web? (Take your time as you have 2 minutes to look at the picture.)
Mussels and algae
Algae and phytoplankton
Algae and limpets
Limpets and phytoplankton
Which statement is true on who eats whom? (Take your time as you have 2 minutes to look at the picture.)
Mussels eat the octopus.
Starfish are eaten by the limpets.
Limpets are eaten by the octopus.
Zooplankton is eaten by the phytoplankton.
What statement is true. (Take your time as you have 2 minutes to look at the picture.)
If the fish increase, the zooplankton will also increase because there are more of them.
If the seagulls decrease, the mussels will increase because seagulls eat mussels.
If starfish decrease, the sharks will increase as they will just eat a ton more fish.
If algae decreases, the limpets will increase since algae isn't eating them.
