Download optional ecosystem review

Name
Hour
Date
Study Guide Quarter L Ecosystems
Hawks and
ls
xes
Snak s
lnsactivorous
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Spid
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Hi
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Toads
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insects
vorous
H
insects
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lan
L.
What is the above diagram called?
2.
What do the arrows represent?
3.
Use the diagram above to give an example of each
a.
Producer
b.
Consumer
c.
d.
e.
Decomposer
Predator
Prey
4.
What will most likely happen to the fox if the rabbit population disappears?
5.
What abiotic factors do plants need in order to survive?
6.
Define biotic factors and provide 3 examples of biotic factors
7.
What is an ecosystem?
8.
What generally flows in one direction through an ecosystem, from producers up through each level of
consumers, and is not recycled?
Name
Hour
Date
Study Guide Quarter 1 Ecosystems
9.
What happens when one organism eats another?
1-0. How can an increasing human population lead to climate change, increased pollution, species extinction, and
less abundant natural resources?
L1. lf a new species with
very few predators was introduced into an environment, what impact would it have on the
environment?
12. What is biodiversity?
Reed Warblers make their nests in the reeds within wetlands. A female European Cuckoo lays its eggs in the
nests of a Reed Warbler. The cuckoo egg closely mimics the e$gs of the Reed Warbler. The Reed Warbler may
recognize the intruding egg and abandon the nest, or it may incubate and hatch the cuckoo egg. Shortly after
hatching, the young European Cuckoo, using a scoop-like depression on its back, instinctively shoves over the
edge of the nest any solid object that it contacts. With the disappearance of their eggs and rightful young, the
foster parents are free to devote all of their care to the young cuckoo which includes feeding them insects.
Frequently this is a difficult task, since the cuckoo chick often grows much larger than the host adults long
before it can care for itself. ln nature, one may see a pair of small foster parent Reed Warblers working hard to
keep up with the huge appetite of an outsized young cuckoo.
https://web.stanford.edu/qroup/stanfordbirds/texVessavs/Brood Parasitism.html
13.
Give an example of a predatorlprey relationship from the paragraph above?
14. What type of relationship exists between the Reed warbler and the cuckoos?
15. Muskrats eat the reeds within the wetlands. What type of relationship is this?
16. Which
a.
b.
c.
d.
change in the reeds could limit the growth of the insect population?
Loss of Competition
of habitat
Fewer predators
Reduction in disease
Loss
Date
Hour
Name
Study Guide Quarter 1 Ecosystems
L7. What happened when ash borers were introduced lnto local forests? How could that affect ash tree
population?
18. What is competition? Give L example.
a. Competition
b. Predation
c. Symbiosis
d. Parasitism
L9. What is a predator prey relationship? Give L example
20. What is mutualism or mutually beneficial? Give
l
example
21. What is commensalism? Give L example
22. What is parasitism? Give
l
example.
23. Match each term with its definition.
a. Community
a group of organisms of
b. ecosystem
c. population
the same species living in the same area at the same time
a community of organisms and its abiotic environment
all the populations of different species that live and interact in an area
one living thing
d. organism
Date
Hour
Name
Study Guide Quarter L Ecosystems
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The picture shows one possible food web for a forest ecosystem. Based on your understanding of ecosystem
interactions, answer the following questions.
24. How is the relationship between the snake and the mouse in the diagram above best described?
25. Which of the organisms in the web
26. How would an increase
above gets its energy from decomposing organic material?
in sales in snake skin boots by humans would result in changes in the ecosystem's food
web? List 2 direct effects,
27. How
are producers indirectly affecting the red-tailed hawk?
Hour
Name
Date
Study Guide Quarter L Ecosystems
Owl
cons!nìef
Snske
ænsum€a
Plant
produær
28. Draw
arrows to complete the food chain
29. What do the arrows
in the food chain represent?
30. lftheowlwasreducedinthefoodchain,whatwouldmostlikelyhappenasaresultofthereductionofowlsin
the food chain?
3L,
Swans are territorial and each pair needs a large amount of space. A small lake can only support one nesting
pair of swans, but when a man-made lake is enlarged, how would the human activity of enlarging the lake have
a positive effect on the ecosystem?
32. Which plant would survive better
Kev:
Flant X
Flant Y
Number of plants
+
warmer climate? Why?
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Temperature ('Ç)
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Name
Hour
Date
Study Guide Quarter L Ecosystems
33.
DDT was an insecticide used
to cut down on insects that caused diseases. Describe 2 possible unintended
consequences of using the insecticíde.