Enriched Science Chapter 9 Part 1 Question Preview (ID: 39083)


Chapter 9. TEACHERS: click here for quick copy question ID numbers.

Climax communities are not the same everywhere.
a) True
b) False
c)
d)

Nonliving things, such as rock, soil, and air are all part of an ecosystem.
a) True
b) False
c)
d)

Ecological succession can begin when seeds are carried to bare areas by birds or the wind.
a) True
b) False
c)
d)

Succession continues until it reaches a pine forest community.
a) False
b) True
c)
d)

The process of one ecological community gradually changing to another is which of the following?
a) ecological succession
b) ecological replacement
c) community succession
d) community replacement

Of the following, which is NOT a freshwater ecosystem?
a) estuary
b) lake
c) pond
d) stream

As eutrophication occurs, populations of algae grow. How does this speed up succession?
a) The algae use so much of the oxygen in the water that fish die, decay and add to the build up of soil.
b) The algae become soil
c) The growth of the algae causes pollution to increase.
d) The presence of the algae encourages sediment to drop out of streams into the pond.

If an existing ecosystem is destroyed, ________.
a) secondary succession occurs
b) primary succession occurs
c) a climax community comes into existence
d) a different type of biome emerges

As plants in a climax community die, ________.
a) they are replaced by plants of the same species
b) they are replaced by plants of a different species
c) either a or b could occur
d) no plants grow in their place

In which biome does drilling for oil and gas interrupt migration patterns?
a) tundra
b) desert
c) taiga
d) grassland

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