Jeopardy

1
Jeopardy
Population size
Population Growth
Water Quality
Competition
Food Chains
Q 100
Q 100
Q 100
Q 100
Q 100
Q 200
Q 200
Q 200
Q 200
Q 200
Q 300
Q 300
Q 300
Q 300
Q 300
Q 400
Q 400
Q 400
Q 400
Q 400
Q 500
Q 500
Q 500
Q 500
Q 500
2
100 Question Food Chains
Organisms, such as plants, that make their own
food are called________? Organisms, such as
animals, that cannot make their own food are
called _________? a. autotrophs, heterotrophs. b.
heterotrophs, autotrophs. c. producers,
decomposers. d. decomposers, consumers.
3
100 Answer Food Chains
a. Autotrophs, heterotrophs.
4
200 Question Food Chains
Rank the following in order from largest to
smallest Organism ecosystem community biome
biosphere population.
5
200 Answer Food Chains
Organism, population, community, ecosystem,
biome, biosphere.
6
300 Question Food Chains
Put the following into a food chain Deer,
wildflower, fungus, vulture. Which of these are
producers? Consumers? Decomposers?
7
300 Answer Food Chains
Wildflower --gt deer --gt vulture Fungus Producer
wildflower Consumer deer, vulture Decomposer
fungus
8
400 Question Food Chains
Producers in one food chain obtain 300 energy
units from photosynthesis. How many energy units
will be transferred to the tertiary (3rd)
consumers?
9
400 Answer Food Chains
300 x .1 x.1 3
10
500 Question Food Chains
Scientists discover fossils of a large tortoise
that lived on a small island group in the
Pacific. The tortoise was likely the biggest
animal on the island. Based on your knowledge of
energy transfer in ecosystems, predict whether
the tortoise was an herbivore, carnivore or
omnivore. EXPLAIN your reasoning.
11
500 Answer Food Chains
The tortoise was probably an herbivore, since it
would need to eat relatively low on the food
chain to obtain the energy it needed to sustain
its large body size (think elephants, moose and
other large herbivores). Also, all tortoises are
herbivores ).
12
100 Question Population Size
What is sampling?
13
100 Answer Population Size
Sampling is estimating a populations size by
counting a number of organisms in a given area,
then using that number to estimate the total
number of organisms.
14
200 Question Population Size

• You need to estimate the number of oak trees in
  Rock Creek Park. Which of the following methods
  would NOT work?
• Sampling
• Census
• Mark and release.

15
200 Answer Population Size
C. Mark and release.
16
300 Question Population Size
A scientist wants to estimate the number of
white perch in the Potomac River. He catches 50
perch and marks them, and then releases them
into the river. Later, he catches 100 fish, 2 of
which have a tag. What is the approximate
number of white perch in the river?
17
300 Answer Population Size
50 x 100 2,500 white perch 2.
18
400 Question Population Size
What are two drawbacks to using a census to count
population size? What are two drawbacks to using
mark and release method to count population size?
19
400 Answer Population Size
A.It is difficult to ensure that you count every
organism in a given area depending on birth and
death rates, organisms may be born/die during the
census. B. Marks may fall off organisms those
initially tagged and recaptured may be more
likely to be caught than others.
20
500 Question Population Size
You are tasked with counting the number of people
in the D.C. metropolitan area. Describe TWO
methods you could use to do this and the benefits
and drawbacks of each.
21
500 Answer Population Size
Census and sampling. The census could be
difficult because of frequent immigration to and
emigration from the region. In addition, there
may be certain populations (those without fixed
addresses, illegal immigrants) who cannot be
counted easily. The benefit is that you would
theoretically count everyone. Sampling could be
difficult because of variable population
densities and the same reasons as above. The
benefit is that it would take less time and be
less expensive than taking a census.
22
100 Question Competition
Considering the advances in fishing technology,
which of these is the best reason for a country
to limit fishing to only a short season during
the year? A. to leave enough fish to replenish
the fish population B. to better regulate the
tourist industry C. to keep fishermen from using
new technology D. to discourage the use of fish
as a source of protein
23
100 Answer Competition
A. to leave enough fish to replenish the fish
population
24
200 Question Competition

• Which of the following can result from
• overexploitation of fisheries?
• Crashing the fish population.
• Disrupting the food chain, so that the
  population of whatever the fish eatsincreases.
• Economic collapse in countries dependenton
  fishing.
• All of the above.

25
200 Answer Competition
D. All of the above.
26
300 Question Competition
Describe what is meant by the Tragedy of the
Commons.
27
300 Answer Competition
The Tragedy of the Commons results from misuse of
publicly available resources, Particularly when
those resources are over- Exploited and
diminished for all users.
28
400 Question Competition
In the graph below, humans are predators and fish
species are prey. What can we conclude about the
influence of the predator population on the prey
population? About the influence of the prey
population on predator population?
29
400 Answer Competition
The prey population decreases as the predator
population increases and vice versa. The more
humans there are, the fewer fish there are the
more fish, the fewer humans.
30
500 Question Competition
Overfishing is a major international problem.
What are some strategies that conservationists
could use to encourage countries with
fishing-based economies not to over fish? What
are some consequences that could be enforced on
countries that cotinue to over fish?
31
500 Answer Competition
Countries that rely on the fishing industry could
be encouraged to switch to sustainable fishing
practices or have hatcheries funded by
international organizations and NGOs. Some
consequences could include trade sanctions,
tariffs, and other internationally enforced
economic policies. Answers will vary.
32
100 Question Water Quality
What is the benthic zone?
33
100 Answer Water Quality
The zone at the bottom of the river or ocean.
34
200 Question Water Quality

• A healthy water system would have which of the
  following
• A variety of macroinvertebrates and a high level
  of dissolved oxygen.
• A variety of macroinvertebrates and high levels
  of nitrates.
• A variety of macroinvertebrates and low light
  levels.
• A variety of macroinvertebrates and an acidic pH.
  

35
200 Answer Water Quality

1. A variety of macroinvertebrates and a high level
   of dissolved oxygen.

36
300 Question Water Quality

• What is a source of dissolved oxygen in water?
• Photosynthesis
• Respiration
• Transpiration
• Turbulence
• Both A and D.

37
300 Answer Water Quality
D. Both turbulence and Photosynthesis.
38
400 Question Water Quality
High nutrient levels in water can lead to high
levels of algae growing. What are some of the
negative consequences of such an algae bloom.
39
400 Answer Water Quality
Algae produces dissolved oxygen, but when it
dies decomposers consume more dissolved oxygen
than the algae produced, leading to dead zones
in rivers or the Bay. Algae, dead or alive, can
also block light to under- water vegetation,
thereby lowering oxygen produced by
photosynthesis.
40
500 Question Water Quality
You need to establish whether a river system is
healthy. Describe what tests you could do to
ascertain its health and what results you would
expect from these tests were the river system
healthy.
41
500 Answer Water Quality
Test for Dissolved oxygen, pH,
temperature, nutrient levels (nitrates and
phosphates), light levels, health of fish,
variety of macroinvertebrates. Healthy tests
high DO, neutral pH, lower temp. than surrounding
land, low nutrient levels, high light levels,
fish without tumors/stress reactions, and a
variety of macroinvertebrates.
42
100 Question Population Growth
What is carrying capacity?
43
100 Answer Population Growth
The number of organisms of one species that an
environment can support indefinitely.
44
200 Question Population Growth
In which type of growth does carrying carrying
capacity play a role? What are some factors that
cause population growth to stay around carrying
capacity?
45
200 Answer Population Growth
Logistic growth. Factors include limited Biotic
and abiotic resources such as prey, competition,
space, water, etc.
46
300 Question Population Growth
Which line represents a J-curve? Which shows
exponential growth?
47
300 Answer Population Growth
The inanity of statements line is a J-curve and
therefore shows exponential growth. The
intelligence line shows exponential decay.
48
400 Question Population Growth
A single bacterium undergoes binary fission (cell
division in bacteria), producing 2 bacteria. Each
of these then undergoes binary fission. Their
offspring undergo binary fission. How many
bacteria will result from the last round of
binary fission? GRAPH your answer.
49
400 Answer Population Growth
8
50
500 Question Population Growth
An emperor promises his people one grain of rice
on March 1st, two on March 2nd, four on March
3rd, etc. How many grains of rice will his people
receive on March 15th? GRAPH what this would
look like!
51
500 Answer Population Growth
16,384.