Download 6th Grade Common Assessment Cycle 2 Study Guide

Common Assessment Cycle 2 Study Guide
Name:_______________________________
1. A producer gets energy from _______ and converts it into food.
A. dead organic matter
B. the Sun
C. primary consumers
D. secondary consumers
2. The picture below shows an owl hunting and catching a mouse.
This is an example of _______.
A. competition
B. predation
C. decomposition
D. parasitism
3. What is the primary function of decomposers in an ecosystem?
Decomposers are parasites; they attach themselves to host organisms and absorb nutrients
A. from the host until the host organism dies.
Decomposers break down matter from dead organisms into simpler substances that can be
B. recycled in ecosystems.
Decomposers combine elements, such as carbon, nitrogen, and oxygen, into complex
C. molecules that can be used as food sources for organisms.
Decomposers absorb energy from the Sun and produce food for themselves as well as
D. other organisms.
4.
The interaction between the hummingbird and the orchid flowers is mutualistic in nature.
Hummingbirds benefit by getting nectar from the flowers. How would the flowers benefit in
return?
A. The orchid flowers get pollinated.
B. The fragrance of the orchid flowers spreads farther.
C. The orchid flowers get protected.
D. The orchid flowers are able to attract more insects.
5.
Which of the following is a consumer in the food web pictured above?
A. grass only
B. mouse only
C. owl and fox only
D. mouse, fox, and owl
6. Unlike plants, animals cannot make their own food. How do animals obtain the energy they
need?
A.
B.
C.
D.
Animals eat other organisms.
Animals absorb chemicals from their environment.
Animals collect solar energy.
Animals are able to function without taking energy in from their environment.
7.
According to the diagram shown above, how does energy flow in an ecosystem?
Energy flows from consumers toward producers and the Sun.
A.
B.
C.
D.
Energy flows from producers to the Sun and from producers to consumers.
Energy flows from the Sun through producers to consumers.
Energy flows directly from the Sun to both producers and consumers.
8. An organism that makes its own food is known as a _______.
A. producer
B. decomposer
C. primary consumer
D. secondary consumer
9. How are changes in populations related to the availability of an ecosystem's resources?
As populations grow, ecosystems produce more resources in order to support the larger
A. population.
B.
C.
D.
Population sizes are limited by the amount of resources that are available.
Changes in population are independent of the availability of an ecosystem's resources.
Large populations need the same amount of resources as small populations.
10. Which of the following are basic needs for animals?
A. food, water, oxygen, space, and shelter
B. shelter, water, food and protection
C. water, oxygen, space, shelter and relaxation
D. food, water, sunlight, space, and shelter
11. A population of black bears depends on salmon from a stream for food.
If a drought causes the stream to run dry one year, how will this likely impact the black bear
population?
The population's size will decrease.
A.
B.
C.
D.
The population will thrive on new species of fish.
The population's size will increase.
The population will be unaffected.
12.
Based on the food web above, which of the following converts energy from the Sun to make its
own food?
A. the lion
B. the cheetah
C. the impala
D. the grass
13. Which relationship below is an example of competition in an ecosystem?
A.
B.
C.
Bald eagles and black bears fish from the same mountain lake.
Rabbits eat the grasses and shrubs in a meadow, and wolves eat the rabbits in the meadow.
Squirrels nest in an oak tree, and insects live under the ground near the tree.
Birds eat the insects that cattle disturb while grazing, and they occasionally ride on the
D. cows' backs.
14. Hermit crabs use old seashells for shelter and protection. Some species of fish also use
abandoned seashells as a place to hide from predators.
Which of the following statements is true?
Hermit crabs and fish that hide in shells compete with each other for food.
A.
B.
C.
D.
Hermit crabs and fish that hide in shells compete with each other for shelter.
Hermit crabs and fish that hide in shells cooperate with each other for food.
Hermit crabs and fish that hide in shells cooperate with each other for shelter.
An experiment was conducted on the population growth of worms. Worms were added to two
identical bins. The bins were both kept at 20° C, except for the month of January when bin 2 was
kept at 30°. Each week 2.5 kg of food was added to bin 1. In bin 2, 2.5 kg of food was added
each week in all months except April. In April, 3.5 kg of food was added per week. The results
of the experiment are below.
15. Are the ecosystems in the bins self-sustaining?
A.
B.
C.
No, because the worms did not reproduce.
No, because food has to be added to the bins in order for the worms to survive.
Yes, because the worms reproduced.
Yes, because once the bins were established the students didn't have to add anything to
D. them.
16. In an ecosystem, there are many factors that affect how many organisms can survive there.
Which of the following is one of those factors?
A. color of flowering plants
B. number of times humans have seen the area
C. age of mammal species
D. availability of water
17. Which relationship below is an example of a predator-prey relationship?
A. A giraffe eats the leaves from tall trees.
B. A rabbit eats grasses.
C. A pet fish eats fish food.
D. A coyote eats a hen.
18. Scientists wanted to study how competition would affect two different deer species living in
the same ecosystem. The result of their eight-year study is summarized in the graph below.
What can you predict will most likely happen to the white-tailed deer in this ecosystem?
A. The population of white-tailed deer will most likely die out over time.
B. The population of white-tailed deer will equal the population of axis deer.
C. The population of white-tailed deer will dramatically increase.
D. The population of white-tailed deer will continue to stabilize.
19. Melissa is designing an experiment to learn what a plant needs to survive. She buys four
plants of the same type. Then, she puts two in the light by the window and two in her closet
where there are no windows.
Finally, she gives the plants either no water or 100 milliliters of water every week for a month.
Which plant will be the healthiest at the end of the experiment?
A. plant 2
B. plant 3
C. plant 4
D. plant 1
20. In ecosystems, plants transform light energy from the Sun into chemical energy when they
make sugar. This sugar can then be consumed by other organisms to be used as building blocks
for other molecules, such as proteins and fats, or it can be transformed into other forms of
energy, such as kinetic energy, when the organism moves.
Which of the following statements is supported by the above information?
A.
B.
C.
D.
Matter and energy must always remain in the same form and location.
Energy can change forms, but only one kind of matter exists.
Matter can change forms, but only one kind of energy exists.
Matter and energy can change forms and locations in ecosystems.
Extended Response
You will need to be able to use Newton’s 1st and 2nd Law to explain what happens during a
collision between a truck and a car. The laws will be provided, you have to be able to explain
what is happening.