Bolded Answers = the answer to the question
Bio 10275: Intro to Biology
Dr. Allison Smith
Study Guide for Test 3
1. You can grow things in dirt?
a. Yes, dirt is what plants are in
b. No, dirt first must have water in it
c. No, plants can only grow in soil
2. What are the things that are in soil?
a. Mineral particles
b. Detritus (organic matter)
c. Detritus food web
d. All the above
3. What do plants do for soil?
a. Helps soil absorb water
b. Holds soil in place
c. Slows down erosion
d. Only a and b
e. All of the above
4. What is a carbon sink?
a. A sink full of carbon
b. Something that holds a lot of carbon
c. Something that releases a lot of carbon
5. Which of the following are examples of a carbon sink, select all that apply? a. Grass
6. Soil gets mixed quicker without the detritus food web?
7. Soil is a renewable resource?
a. Yes, because it renews itself
b. False, because it does not renew itself
c. False, it renews itself so slowly it is technically considered a non
8. What happened to the top soil during the great drought of the 1930’s? a. It got hard
b. It was blown away because of severe wind storms
c. It stayed where it was, soil doesn’t move
9. All types of soil can grow plants/
a. True, soil is what plants grow in
b. False, topsoil is what is needed
10.Out of the following which do we get from soil, select all that apply? a. Minerals used in medications If you want to learn more check out What does it mean for a market to fail?
b. Building materials
f. Cleaner air
11.Which of the following affects population growth?
a. Food production
b. Rotation of earth
c. Our moods
12.What is arable land?
a. Dirt with air in it
b. Land we grow crops on
c. Land we build houses on
13.In one square meter of soil about how many vertebrates can be found? a. 1
14.In one square meter of soil around how many bacteria can be found? a. 1
c. 10,000,000,000,000 Don't forget about the age old question of How do you calculate summation net facilitation of neural input
on specific neuron?
We also discuss several other topics like What are the key recommendations for breastfeeding & complementary foods?
15.What is bioturbation?
a. Mixing of soil by plants
b. Mixing of soil by animals
c. Mixing of soil by machinery
16.Is there air in soil?
17.In soil which of the following has the greatest quantity?
a. Organic matter
18.What is the bottom layer of soil called?
a. Top soil
b. Bottom soil
d. Top rock
19.How does terrain affect soil formation?
a. It doesn’t
b. On a hill soil gets washed away when it rains, will have poor soil c. In a valley the soil won’t get washed away, good soil If you want to learn more check out What is the americans with disabilities act?
d. Both b and c
20.What are the three things that affect soil quality, select all that apply? a. Chemical
21.Soil quality determines soil productivity?
22.Which type of soil molecule lets water pass through it more freely? a. Sand, large molecule
b. Clay, small molecule
23.In the agricultural revolution what happened?
a. Started to collect seeds and started to grow them in a contained area b. Killed all the mammoths
c. The slaves were imported to amerce
24.In the industrial revolution what happened?
a. The third iceage
b. Started to grow food on a massive scale We also discuss several other topics like What is the step in turning glucose into pyruvate?
c. Started to artificially breed plants
25.What happened in the green revolution?
a. Machinery made farming easier
b. Food production increased
c. Highyield crops bred
d. GMO’s were introduced
e. All the above
26.What is a GMO?
a. A mutant salmon
b. A mix hybrid type of bear
c. A genetically modified organism
27.To make a GMO what happens?
a. Two different species are bred together
b. A DNA code from one organism is inserted into another c. Traits that are wanted are the traits that get passed along in breeding 28.There are no negatives to GMO’s? We also discuss several other topics like What is the definition of alcohol poisoning?
a. True, they are only used to make crops better
b. False, they could create super weeds
29.On food packaging it has to say if something is a GMO per FDA standards? a. True
30.What are some advantages to pesticides?
a. None, they are horrible
b. They increase food supple
c. They work fast to kill pests
d. Both b and c
31.What are some disadvantages to pesticides?
a. Promote genetic resistance
b. They can enter the food web
c. Can harm wildlife and people
d. All of the above
32.Are pollinators harmed by pesticides?
a. Yes, butterflies, moths, and bees are negatively affected b. No, they only harm the insects they are supposed to
33.What is it called when a hive of bees suddenly disappears? a. Bee disappearance
c. Colony collapse disorder
d. Colony corrosive disorder
34.Which are of the world has the highest percentage of pesticides found in its
a. South America
b. North America
35.Any kind of plant is good for bee health?
a. No, it has to produce pollen
b. Yes, bees can eat all kinds of plants
36.Pollinators are essential for growing food?
37.Which of the following are speeding along the process of topsoil erosion?
Select all that apply.
a. Livestock on range lands
f. Home gardens
38.Which of the following are obstacles to food security? Select all that apply. a. Poverty
c. Political upheaval
d. Children not liking vegetables
f. Bad weather
g. Environmental effects of industrialized farming
39.Is there a food security problem in America?
a. Yes, many counties in America are either food deserts or food
b. No, there is food everywhere
40.What did one gardener in South Central do to fight against the lack of fresh
food in his town?
a. He petitioned the government for more parks
b. He opened a community store
c. He planted gardens on the street for people to take food from 41.What are some sustainable agriculture practices? Select all that apply. a. Crop rotation
b. Waste management
c. Reduce use of chemicals
d. Increase use of pesticides
e. Create more GMO plants
42.Can you grow plants that will keep pests away as an alternative to using
a. No, the only way to keep pests away is by using pesticides
b. Yes, it’s called biocontrol
c. No, pesticides and GMO’s are the only way to keep pests away d. Yes, it’s called cultivation control
43.Why are GMO seeds ruining Indian farmers?
a. They are expensive
b. They grow crops too big
c. They are sterile so every year the farmers have to buy more seeds 44.What is biodiversity?
a. Having two different species living in the same place
c. It is the variety of life on Earth, in all its forms and all its interactions 45.Which of the following is not part of biodiversity?
b. Individual species
c. Communities of creatures
d. Entire ecosystems
e. All the above
f. None of the above
46.If you don’t live near nature does biodiversity affect you?
a. No, it is not near you, so it has no affect
b. Yes, the air you breathe, the water you drink, the food you eat; all
rely on biodiversity
47.Since 1970 how has the population of animals living on Earth changed? a. It has been reduced by half
b. It has increased by half
48.What are some of the causes for biodiversity loss? Select all that apply. a. Wild areas razed for farmland
b. Poaching and unsustainable hunting for food
d. Home gardening
e. Global trade/shipping
f. Water extraction for farms and people
49.What is a bigger threat to humans/
a. Biodiversity loss
b. Climate change
50.What is a biodiversity hotspot?
a. A place where there is lots of biodiversity
b. A place where species diversity and endemic species are present 51.How many extinction events have there been in Earth’s history? a. 6
c. 5 and maybe in the middle of a 6th
52.What is natures solution for the extinction of a species?
a. There is not one
b. New species are evolving all the time
53.What is it called when a species fits into its ecosystem so perfectly that any
change could wipe it out?
a. Low reproductive rate
b. Specialized niche
c. High trophic level
54.In HIPPCO what does the “C” stand for?
a. Changing conditions
b. Climate change
55.Can introducing one new species into an area change the whole ecosystem? a. No, one species can’t have that big of an effect
b. Yes, in an ecosystem everything effects everything. This is called
56.Why is it so hard to protect the oceans?
a. Is isn’t
b. People are lazy
c. Too many species
d. The ocean is a “free man’s land” where international treaties control
things and it’s hard to get different countries to agree
57.Which president created the endangered species act?
58.What is something people have done to weaken the endangered species act? a. Cut the budget
b. Killed animals on the list
c. Gave out exemption
d. Both a and b
e. Both a and c
f. All the above
59.Which of the following is needed for a species to be put on the endangered
species act list? Select all that apply.
a. Habitat loss/fragmentation
c. Natural predators
d. Population decline
e. Inadequate protection
f. Ecosystem is too hot
60.What other species does the blackfooted ferret depend on for survival? a. Hawks
c. Prairie dogs
61.To save the blackfooted ferret what had to be done?
a. Farmers had to kill the prairie digs
b. The whole ecosystem had to be rebuilt
c. All natural predators had to be killed
62.What is the biggest argument against the endangered species act? a. It stops companies from building
b. Less than 2% of species put on the list come off it
c. It does not help species
63.What is one solution to species going extinct?
a. There isn’t any
b. Gene banks
c. Natural selection
64.What are “water rights”?
a. When people get legal protection for their use of water from a stream b. A law that states everyone can have water
c. An unspoken rule that means water must be shared
65.How many pints of water does it take to make one pint of beer? a. 5
66.What is the difference between an oldgrowth and secondgrowth forest? a. An old growth has never been cut, a second growth has been clear
cut at one time
b. An old growth is over 100 years old, a second growth is a second
generation oldgrowth forest
67.What are some ecological benefits of forests? Select all that apply. a. Remove CO2 from atmosphere
b. Are a source of money for companies
c. Slow climate change
d. Provides fuel
e. Reduce erosion
f. Provide wildlife habitats
68.What are some economic benefits of forests? Select all that apply. a. Supply lumber
b. Improve public health
c. Supply paper
d. Source of recreation
69.What happens when a forest is clear cut?
a. It creates a new habitat
b. It lets the forest grow more
c. It causes a loss of nutrients through runoff
70.Are fires good for forests?
a. True, fires are a natural part of a forests life cycle
b. False, fires kill everything
71.Why are tropical forests some of the most diverse ecosystems on the planet? a. They aren’t, the oceans are
b. They have a threedimensional habitat and no winter
c. Humans don’t live there
72.Dead trees and fallen timber should always be removed from forests? a. True, they are a fire hazard
b. False, they provide habitats
73.What is one sustainable way to protect tropical forests?
a. Sue big companies
b. Educate people
c. Pay people to protect the forests
d. All the above
e. Both a and b
f. Both b and c
74.What is it called when a degraded system is turned into a useful ecosystem
without returning it to its original condition?
d. Artificial ecosystem
75.What is the last step of restoration?
a. Eliminate degradation factors
b. Reintroduce key species
c. Allow secondary succession to occur
d. Identify cause of degradation
76.What is a native plant garden?
a. Where you plant different plants for the different life cycles of different
b. Where you put in habitat for different species
c. Where you let a corner of your lawn go wild
77.What is a downstream impact of dams?
a. Blocked fish migration
b. Reduced biodiversity
c. Displaces communities
78.Why are invasive species such a threat?
a. They eat a lot
b. They have no natural predators in their new ecosystem c. They are pretty
79.How much of Earth’s freshwater is drinkable?
80.What is always at the bottom of a food web/
a. Dead organisms
b. Something that uses photosynthesis
c. The predator
81.What is dissolved oxygen?
a. How much oxygen is in the water
b. When oxygen is mixed with hydrogen
82.Why are coastal zones nutrient rich?
a. The undercurrent carries nutrients from the bottom of the ocean
floor up to the coastal area
b. Lots of organisms die there
c. There is lots of human pollution
83.Which of the following intertidal zones is wet and dry?
a. Low tide zone
b. Middle tide zone
c. High tide zone
d. Spray zone
84.Estuaries are salt water?
a. True, they are a part of the ocean
b. False, they have brackish water (salt and fresh water) 85.Which species has a direct effect on the health of sea grass beds? a. Crabs
c. Sea otters
86.What happens when corals get to hot?
a. They start to reproduce
b. They bleach and die
c. They grow fast
87.Have we discovered every species in the ocean?
a. Yes, we have spent decades exploring the oceans bottom
b. No, only recently have we been able to go to the bottom and every
time we do we see something new
88.What is the difference between pointsource and onopointsource pollution? a. Pointsource is where we can pin point exactly where the pollution is
coming from, nonpointsource is where we can’t pin point where the
pollution is coming from
b. Pointsource is where we can pin point exactly where the pollution is coming from, nonpointsource is where we can’t pin point where the
pollution is coming from, but we have a general idea
89.Can something that happens in a river at the top of a mountain affect the ocean? a. Yes, every waterway is connected to the ocean
b. No, they are too far apart
90.Eutrophic water is clear and has little nutrients from run off? a. True, eutrophic water is healthy water
b. False, eutrophic water is not clear and has lots of nutrients from run
91.Oligotrophic water is clear and has little nutrients from run off? a. True, Oligotrophic water is healthy water
b. False, Oligotrophic water is not clear and has lots of nutrients from run
92.Wetlands filter pollutants and…?
a. Mitigates floods
b. Slows movement of water
c. Has species that don’t live anywhere else
d. Are one of the most endangered ecosystems
e. A and c
f. All of the above
93.The more ground cover (plants) there is on the ground the less run off and soil
a. True, ground cover helps the soil absorb the water
b. False, ground cover prevents the soil from absorbing the water 94.Would it be bad if coal ash got into the drinking water supply? a. No, it is a natural substance
b. Yes, coal ash contains toxins that would be harmful to humans 95.Which water shed covers most of the U.S. and drains into the Gulf of Mexico? a. Mississippi
c. North river
96.Algae produce oxygen so why is there a lack of oxygen in areas high in algae? a. Too much algae and they start to produce CO2
b. The bacteria that feeds on the dead algae produce CO2 97.Can an excess of algae in drinking water be harmful to humans? a. No, it’s just a plant
b. Yes, there will be no oxygen in the water
c. No, algae adds essential nutrients to the water
d. Yes, algae can contain bacteria which turns water toxic 98.What happens when water is taken out of an aquifer and sea levels rise a. The aquifer gets refilled
b. The water in the aquifer becomes salty
c. An estuary is created
99.Which aquifer irrigates 30% of U.S. crops?
100. What are the three reasons the Sioux tribe is fighting against the Dakota
pipeline? Select all that apply.
a. It crosses their only source of drinking water
b. It would be ugly
c. It would destroy sacred land to the tribe
d. The voice of the tribe was not heard during the federal procedures 13