Changes in Ecosystems
Directions
In this assessment, you will be asked multiple choice questions to help you better understand your level of knowledge of Unit Assessment: Changes in Ecosystems.
1)What adaptation have birds in large cities made over time that affects humans?
a)Birds have adapted to make nests in unusual places on buildings where people live and work.
b)Birds do not fly in the city and take up too much space on the road.
c)Birds only eat from restaurant trash in the city.
d)Birds fly less because of the pollution in cities.
2)______is the number of members of ONE species within an ecosystem or habitat.
a)Population
b)Community
c)Biodiversity
d)Niche
3)What is a community? A community is ______.
a)the specific place where an organism lives
b)the total number of members of one species within an ecosystem or habitat
c)the interactions of the living and nonliving things in an environment
d)all of the populations in one ecosystem
4)Which one is an example of a harmful change to an ecosystem?
a)reduce erosion
b)pollution
c)nutrient cycling
d)seed dispersal
5)Which human activity will cause short-term changes in a deciduous forest ecosystem?
a)clearing a path for hiking
b)swimming
c)canoeing
d)bird watching
6)Why is it important to not pour oil, paint, or other chemicals into a storm drain? It is important to not pour oil, paint, or other chemicals into a storm drain because they ______.
a)stay in the drain for a long time
b)do not mix very well with fresh or salt water
c)will travel with storm water into river ecosystems
d)smell really bad in the drain
7)How does a squirrel adapt to the seasonal change from fall to winter? The squirrel ______.
a)hibernates in the winter
b)begins to breathe carbon dioxide instead of oxygen in the fall
c)gathers and stores acorns for the winter
d)reproduces offspring in the fall
8)Terence has studied the life cycle of frogs. He is curious and wants to find out what happens to a frog during the four seasons of the year. He has found a pond with many frogs living in it in the summer. What should Terence do to find out what happens to the frogs for the rest of the year? Terence should ______.
a)keep visiting the pond throughout the rest of the year and record his observations
b)visit the pond after it has iced over in the winter and find the frogs
c)gather insects and feed the frogs all year long
d)count how many ponds there are in the area that have frogs and record his observations
9)______over time can cause a species behavior to affect other living things in the ecosystem.
a)Decomposition
b)Extinction
c)Germination
d)Adaptation
10)Migration is ______used by some animals to survive.
a)an method of extinction
b)an adaptation
c)a form of reproduction
d)a form of pollination
11)If Earth's climate changes and becomes warmer, what will happen to the living parts of an ecosystem?
a)The mammal populations will increase.
b)Those species that cannot adapt will become extinct.
c)The reptile populations will increase.
d)The number of different species on Earth will triple.
12)______shows that most of the organisms in the past did not survive long term changes or they adapted to become new species.
a)Lava
b)Igeneous Rock
c)Magma
d)Fossil evidence
13)If the population of foxes in an ecosystem increase, what will happen to the population of rabbits? The population of rabbits will ______.
a)double
b)triple
c)decrease
d)stay the same
14)Read the description carefully and answer the question below.
A deciduous forest has had a fire destroy half of the trees. Scientists have identified 87 grey squirrels that live in this forest. What will happen to the population of squirrels in this ecosystem? The squirrel population in this ecosystem will most likely______.
a)stay the same
b)triple
c)double
d)decrease
15)What is introduced by humans and can cause a reduction in the numbers of one or more species in an ecosystem?
a)solar energy
b)water
c)air
d)pollution
16)If the number of small fish decreases, what MOST LIKELY will happen to the number of snapping turtles?
a)It will increase.
b)It will decrease.
c)It will stay the same.
d)Snapping turtles will no longer exist.
snapping turtles
large fish
small fish
tadpoles
algae
17)In a rain forest community, the energy that fuels the entire ecosystem comes from the _____.
a)rain
b)trees
c)insects
d)sun
18)Which statement BEST describes the relationship between a fox and a mouse?
a)The fox is the consumer, and the mouse is the producer.
b)The fox is the predator, and the mouse is the decomposer.
c)The fox is the prey, and the mouse is the consumer.
d)The fox is the predator, and the mouse is the prey.
19)Which category best describes an animal that only eats plants?
a)producer
b)herbivore
c)carnivore
d)omnivore
20)Which of the following describes what a food chain shows?
a)how animals move about in their community
b)which foods in a community grows the best
c)how energy travels in a community