Ecosystem Changes Question Preview (ID: 56148)
Category 4 Lesson 1.
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When an organism is able to survive a devastating event such as a forest fire, we can infer the organism is better ______ for that situation.
a) adapted
b) hidden
c) liked
d) advised
Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?
a) Conifer trees and tall grasses with roots that loosen the soil
b) Mosses and lichens that can grow on rocky surfaces
c) Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
d) Vines and shrubs that help prevent the erosion of shallow soil
A flood with rushing water came through an area. What type of plants will most likely survive?
a) plants with many leaves
b) plants with short roots
c) plants with long roots
d) plants with very few leaves
In short-term environmental changes organisms that are not able to flee (run away) most likely _____.
a) adapt
b) change
c) die
d) live
Primary succession starts with ______.
a) fertile soil
b) grasses
c) small shrubs
d) rocks
Organisms being able to adapt to their changing environment is a characteristic of _______ environmental changes.
a) primary succession
b) long-term
c) microhabitat
d) short-term
Which of the following helps in sustaining or maintaining an ecosystem?
a) biodiversity
b) pollution
c) succession
d) capacity
The rebuilding of an ecosystem after a catastrophic event is called ________ succession.
a) primary
b) secondary
c) tertiary
d) apex
_______ is an example of a short-term environmental change.
a) Air Pollution
b) Ice Age
c) Deforestation
d) Volcanic Eruption
An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because —
a) a greater number of plant species means that there is less barren land
b) a greater variety of species present allows more organisms to adapt after changes occur
c) the transition area between two ecosystems is narrower
d) there are fewer species to be affected by environmental stresses
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