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WorksheetsEcosystems Unit Review
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Consumers that eat both plants and animals are called ____________________.
a)
Omnivores
b)
Herbivores
c)
Carnivores
d)
Scavengers
2.
The many overlapping food chains in an ecosystem make up a(n) _______________.
a)
Food web
b)
Niche
c)
Energy pyramid
d)
Feeding level
3.
A diagram that shows the amount of energy that moves from one feeding level to another in a food web is called a(n) ____________.
a)
Food change
b)
Energy pyramid
c)
Ecosystem
d)
Niche
4.
In an energy pyramid, which level has the most available energy?
a)
Producer
b)
First-level consumer
c)
Second-level consumer
d)
Third-level consumer
5.
The step in the water cycle in which water vapor becomes liquid water is __________________.
a)
Recycling
b)
Nitrogen fixation
c)
Condensation
d)
Precipitation
6.
In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules (i.e. glucose)?
a)
Precipitation
b)
Photosynthesis
c)
The Nitrogen Cycle
d)
The Water Cycle
7.
A group of land ecosystems with similar climates and organisms is called a(n) ___________________.
a)
Energy pyramid
b)
Climate
c)
Biome
d)
Food web
8.
Which biome is extremely cold and dry?
a)
Desert
b)
Tundra
c)
Grassland
d)
Mountains
9.
Ponds and rivers are two types of __________________.
a)
Marine ecosystems
b)
Rain forest biomes
c)
Freshwater ecosystems
d)
Estuary ecosystems
10.
An organism that can make its own food is called a _______________.
a)
Consumer
b)
Decomposer
c)
Producer
d)
Scavenger
11.
Vultures, which feed on the bodies of dead organisms, are _____________________.
a)
First-level organisms
b)
Scavengers
c)
Producers
d)
Herbivores
12.
The first organism in a food chain is always a __________________.
a)
Consumer
b)
Carnivore
c)
Herbivore
d)
Producer
13.
Which of these is NOT an example of precipitation?
a)
Rain
b)
Snow
c)
Groundwater
d)
Hail
14.
What do producers release as a result of photosynthesis?
a)
Hydrogen
b)
Nitrogen
c)
Oxygen
d)
Carbon dioxide
15.
A large variety of plants grow in tropical rain forests because _________________________.
a)
Many insects live there.
b)
The forest floor is very dark.
c)
It has very good soil.
d)
It is warm, humid, and rainy.
16.
What makes a leaf appear green?
a)
Accessory pigments
b)
Chlorophyll
c)
Vascular tissue
d)
Cuticle
17.
Which biome receives less than 25 centimeters of rain per year?
a)
Desert
b)
Grassland
c)
Temperate rain forest
d)
Tropical rain forest
18.
Photosynthesis in plants produces ___________ and __________.
a)
Oxygen and carbon dioxide
b)
Carbon dioxide and water
c)
Sugar and oxygen
d)
Water and sugar
19.
Photosynthesis takes place in a plant cell's __________________.
a)
Nucleus
b)
Chloroplasts
c)
Cell wall
d)
Vacuole
20.
Which best summarizes the order of energy flow in a food chain?
a)
Sun to decomposers to producers to consumers
b)
Sun to consumers to decomposers to producers
c)
Sun to producers to consumers to decomposers
d)
Sun to producers to decomposers to consumers
21.
Which of the following lists consists of only biotic parts and an environment?
a)
Soil, leaves, cats, and flowers
b)
Fish, rocks, and salt water
c)
Rocks, leaves, and water
d)
Crickets, tulips, and tadpoles
22.
Which is a list of the abiotic parts of an environment?
a)
Soil, leaves, and flowers
b)
Soil, rocks, and water
c)
Rocks, leaves, and water
d)
Water, rocks, and tadpoles
23.
Decomposers can best be described as ________________.
a)
Organisms that eat dead plant and animal matter
b)
Organisms that break down dead plant and animal matter
c)
Organisms that eat both plant and animal matter
d)
Organisms that break down plant and animal matter
24.
As matter and energy move from grass to grasshoppers, the amount of energy ___________________.
a)
Decreases
b)
Increases
c)
Decreases, then increases
d)
Increases or decreases, but the population size stays the same
25.
It is important to protect abiotic factors like the soil and air from contamination because _______________.
a)
They affect other abiotic factors.
b)
They affect other biotic factors.
c)
They affect other abiotic and biotic factors.
d)
It is not important to protect abiotic factors, because they are not alive.
26.
Why do some animals hibernate in the winter?
a)
To find food for their young
b)
To adapt to environmental changes
c)
To attract a mate
d)
To avoid predators
27.
How could acid rain affect the trees living in a forest?
a)
It could strengthen the leaves of the trees in the forest.
b)
It could alter the soil quality, adding toxins that harm the trees.
c)
It could remove chemicals in the soil that harm the trees in the forest.
d)
It could change the soil quality, providing nutrients to the trees.
28.
Which of these best illustrates the correct order of flow of energy through a food chain?
a)
Rabbit- mouse- grain- sun
b)
Rabbit- grain- mouse- sun
c)
Sun- grain- mouse- rabbit
d)
Sun- mouse- grain- rabbit
29.
How can trees minimize water loss through the colder months of the year?
a)
Trees can use more sunlight for energy.
b)
Trees can add layers of bark.
c)
Trees can lose their leaves.
d)
Trees can grow more leaves.
30.
Why do large trees have a difficult time growing in the Tundra biome?
a)
The tundra is too hot for trees to grow.
b)
Animals that live in the tundra destroy most vegetation.
c)
Flooding occurs too often in the tundra for large trees to grow.
d)
The soil in the tundra is too nutrient-poor for large trees to grow.
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