Life Science: Ecology, Book E

Chapter 3: Ecosystems

Ecosystems

1.
Taigas and grasslands are examples of __________.
A)canopies
B)succession
C)biomes
D)estuaries
2.
Which of the following animals can be found in a wetlands environment?
A)bear
B)salamander
C)beaver
D)lemming
3.
Which of these biomes receives little annual precipitation?
A)temperate deciduous forest
B)grasslands
C)tundra
D)taiga
4.
About what percentage of water on Earth's surface contains high concentrations of salt?
A)15%
B)95%
C)65%
D)35%
5.
The body of water where a river and an ocean meet is called __________.
A)an understory
B)a pond
C)an estuary
D)a wetlands
6.
In many desert regions, water is diverted from streams and rivers to provide it to people in cities. How does this impact the animals in the area?
A)The animals migrate to tropical rain forests.
B)The animals move closer to cities to search for food and water.
C)The animals stop searching for water.
D)The animals become more active during daylight hours.
7.
In which aquatic ecosystem would you find ocean fish being raised for food for humans?
A)an intertidal zone
B)an estuary
C)a coral reef
D)a wetlands
8.
__________ are usually shallow and filled with an abundance of plant and animal life.
A)Rivers
B)Ponds
C)Oceans
D)Lakes
9.
Which one of these is true of the tropical rain forest biome?
A)The soil contains little dead vegetation.
B)The soil contains permafrost.
C)The soil is thin and gravelly.
D)The soil thaws during the summer.
10.
After a house is torn down, the land it stood on begins to have grass and weeds grow from the soil. What is this an example of?
A)primary succession
B)pioneer species
C)secondary succession
D)climax communities
11.
Which of these is NOT a freshwater ecosystem?
A)reef
B)wetlands
C)river
D)pond
12.
Primary succession begins in an area without __________.
A)wind
B)air
C)sunlight
D)soil
13.
Which of these aquatic ecosystems has the highest salinity?
A)estuary
B)coral reef
C)stream
D)river
14.
Which biome typically has four distinct seasons?
A)temperate rain forest
B)temperate deciduous forest
C)tundra
D)desert
15.
The region below about 200 m in an open ocean is called the __________.
A)dark zone
B)canopy
C)steppes
D)understory
16.
__________ describes the weather patterns that affect a region over a long period of time.
A)Climate
B)Succession
C)Community
D)Weather
17.
The gradual changes that happen in the types of species living in a region are called __________.
A)succession
B)permafrost
C)balance
D)community
18.
Which biome would the kangaroos of Australia be found in?
A)desert
B)grasslands
C)temperate deciduous forest
D)tropical rain forest
19.
Which plant is typically found in grasslands?
A)rice
B)corn
C)cactus
D)moss
20.
Which of these biomes receives the least amount of rainfall every year?
A)desert
B)tropical rain forest
C)taiga
D)temperate deciduous forest