New York Science Grade 6

Chapter 11: Ecosystems

Ecosystems

1
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 become more active during daylight hours.
B)The animals stop searching for water.
C)The animals migrate to tropical rain forests.
D)The animals move closer to cities to search for food and water.
2
Which plant is typically found in grasslands?
A)rice
B)moss
C)cactus
D)corn
3
Which one of these is true of the tropical rain forest biome?
A)The soil contains permafrost.
B)The soil contains little dead vegetation.
C)The soil is thin and gravelly.
D)The soil thaws during the summer.
4
When is the intertidal zone covered with water?
A)during daylight hours
B)during nighttime hours
C)at high tide
D)at low tide
5
Which of these factors helps determine the climate of a region?
A)the amount of erosion
B)the number of plant species
C)the amount of precipitation
D)the impact of succession
6
Which of these animals might be found living in a taiga?
A)moose
B)kangaroo rat
C)zebra
D)spotted owl
7
Because ponds tend to be filled with plant material, these bodies of water are usually high in __________.
A)acidity
B)nutrients
C)salinity
D)permafrost
8
The gradual changes that happen in the types of species living in a region are called __________.
A)permafrost
B)community
C)succession
D)balance
9
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)secondary succession
C)pioneer species
D)climax communities
10
The region below about 200 m in an open ocean is called the __________.
A)steppes
B)understory
C)canopy
D)dark zone
11
Which of these is NOT a freshwater ecosystem?
A)pond
B)river
C)reef
D)wetlands
12
Which of the following animals can be found in a wetlands environment?
A)lemming
B)beaver
C)salamander
D)bear
13
__________ describes the weather patterns that affect a region over a long period of time.
A)Community
B)Weather
C)Succession
D)Climate
14
Taigas and grasslands are examples of __________.
A)estuaries
B)succession
C)biomes
D)canopies
15
Which biome typically has four distinct seasons?
A)tundra
B)temperate rain forest
C)desert
D)temperate deciduous forest
16
Which of these aquatic ecosystems has the highest salinity?
A)coral reef
B)river
C)estuary
D)stream
17
The body of water where a river and an ocean meet is called __________.
A)an estuary
B)an understory
C)a wetlands
D)a pond
18
In which aquatic ecosystem would you find ocean fish being raised for food for humans?
A)an intertidal zone
B)a coral reef
C)a wetlands
D)an estuary
19
Which biome would the kangaroos of Australia be found in?
A)desert
B)grasslands
C)tropical rain forest
D)temperate deciduous forest
20
Which of these biomes is considered the most biologically diverse?
A)temperate deciduous forest
B)grasslands
C)tropical rain forest
D)desert
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