WorksheetsEcosystem Review
Total questions: 29
Worksheet time: 15mins
A truck carrying pesticides slipped off the road and into a lake. The pesticides were spilled in the lake. Which of the following events would NOT occur?
the fish in the lake would be poisoned
the water supplyy would be contaminated
death in animals can occur instantly upsetting the food web
the pesticides would quickly be removed from the water
IN the prarie ecosystem, where would fungi be in the food web?
first level producer
decomposer
first level consumer
third level producer
In the cood chain, which of the following receives their energy directly from the sun?
producers
consumers
decomposers
transfers
The components of an ecosystem consist of:
only living things
only non-living things
both living and non-living things
neither living or non-living things
Decomposers get their food by:
eating plants
eating other animals
eating dead plants and animals
eating bacteria
In a food chain, which of the following should there be more of, in order for all animals to survive?
producers
primary consumers
secondary consumers
decomposers
Which food chain is in the correct order?
grasshopper - grass - snake - frog - hawk
grasshopper - frog - hawk - snake - grass
grass - grasshopper - frog - snake - hawk
grass - grasshopper - snake - frog - hawk
How have desert plants adapted to their environment?
by limiting the use of sunlight
by storing water
by distributing certain nutrients
by releasing water
What is the role of an owl in the food web?
consumer
decomposer
herbivore
producer
Why can frogs and snakes live in the same garden?
both keep weeds out of the garden
both help different plants to grow
both occupy different niches
both compete for water
What prevents plant growth beneath the trees in thick forests?
The trees limit the amount of sunlight that is able to reach the ground.
The roots of the trees make it difficult for plants to grow.
Little water reaches the ground under the trees.
The temperature of the soil under the trees does ont allow plants to grow.
Which is the best example of habitat reduction caused by humans?
Birds and animals flee a forest fire caused by lightening.
Birds become sick from eating insects new to their area.
Fish swimming to breeding grounds blocked by dams.
A new species of fish migrates up a river, competing with native fish for food.
Which term describes the role of corn in a food chain?
Carnivore
Consumer
Herbivore
Producer
Which resource do decomposers return to the environment?
light
nutrients
oxygen
water
Whis is the greatest threat to the survival of large predator species, like mountian lions and tigers?
loss of other predator species
flobal climate change
loss of large wilderness areas
animal disease
Which statement best explains why there are fewer carnivores living in tundra environments than in other environments?
The short growing season limits the number of herbivores that support carnivores.
There is not enough sunlight for primary producers to carry out photosynthesis
The large number of predators limits the number of carnivores that live in the tundra.
There are more disease-causing insects present in the tundra environment.
Which best describes the role of a producer in an ecosystem?
to use energy from the sun to make food
to decompose dead organisms
to eat other living organisms
to feed on dead organisms
What would most likely be the reason for a deer to move to another location?
No vegetation is left in its habitat
No animals are left in its habitat
No predators are left in its habitat
No decomposers are left in its habitat
Which type of environment is mostly populated with oak, hickory , beech, and maple trees?
tiaga
deciduous orest
tundra
tropical rain forest
What is needed for an ecosystem to support the greatest variety of organisms over the longest period of time?
many different kinds of bacteria
many different animals
many different kinfs of minerals
many different kinds of plants.
Which path shows how humans might get energy from the sun.
sun - cow - human
sun - cow - grass - human
sun - grass - cow - human
sun - grass - sheep - cow - human
Why do large trees have a difficult time living in tundra?
the tundra is too hot for trees to grow large
animals that live in a tundra destroy most vegetation
flooding occurs too often in tundra for large trees to grow
the soil in the tundra is too poor for large trees to grow.
Which organisms are producers?
algae
frogs
insects
snakes
What is a likely consequence of cutting down rain forests?
a reduction in the amount of air pollution on Earth
an increase in the number of plants living on Earth
a reduction in the variety of organisms living on Earth
an increase in the number of arctic ecosystems on Earth.
Whuch effect does a decrease in sunlight have on a pond ecosystem?
an increase in oxygen levels
a decrease in the nitrogen levels
an increase in the algae population
a decrease in the algae population
Different types of birds within an environment may feed on different types of organisms. What is a benefit of this type of interaction?
It allows diffferent birds to build better nests.
It reduces competition between different birds.
It causes different birds to reproduce more often.
It allows diferent birds to escape from predators.
A species of giant pandas live only in central China. Bamboo, a tall, green tropical plant, is the main food source for these animals. Large areas of bamboo are being cut down in central China to make room for growing other crops. What will most likely happen to these giant pandas?
They will become endangered or extinct
They will migrate to warmer areas of China
They will become carnivores
They will begin to live in caves
Which of the following is the source of energy for the ecosystem shown above?
starfish
fish
sun
shark
Which of the following is missing from the food chain above?
ticks
plants
wolves
hawks
