WorksheetsFall DCA Review
Total questions: 100
Worksheet time: 1hrs 11mins
Name
Class
Date
1.
What characteristics of the planet, Earth, is essential to the survival of living organisms?
a)
Earth has abundant available water
b)
Earth has just one orbiting moon.
c)
Earth orbits the Sun once every 365 days
d)
Earth rotates on its axis once every 24 hours.
2.
Layer of ozone in upper atmosphere of Earth is important to life because it shields Earth from
a)
changes in temperature.
b)
ultraviolet light
c)
solar winds.
d)
impacts from meteors.
3.
The magnetic field of Earth protects life against
a)
debris ejected from the Moon.
b)
ultraviolet radiation from the stars.
c)
high energy particles from the Sun.
d)
falling meteors from outer space.
4.
What is the most important factor that determines Earth’s temperature?
a)
Distance to the Moon
b)
Gas composition of the atmosphere
c)
Proximity to the Sun
d)
Amount of water on the planet
5.
What characteristics of a planet will influence whether its temp. will be suitable to life?
a)
The amount of its gravitational force
b)
The number and size of active volcanoes
c)
The tilt of the axis of rotation of the planet
d)
The distance from the Sun of its orbit
6.
A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?
a)
Coleoptera
b)
Heteroptera
c)
Diptera
d)
Lepidoptera
7.
An illustration and a dichotomous key are given. What is the correct classification for this organism?
a)
Class Insecta
b)
Order Amblygygi
c)
Order Araneae
d)
Order Scorpiones
8.
What step do we always start with when using dichotomous keys?
a)
1
b)
2
c)
3
d)
4
9.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
10.
Sustainability refers to
a)
how many species are present in an ecosystem
b)
when a species goes extinct
c)
how long a species lives
d)
the ability to maintain ecological process over long periods of time.
11.
The higher the biodiversity, the more sustainable an ecosystem is.
a)
True
b)
False
12.
Which best explains why producers are at the beginning of all food chains?
a)
They turn dead animals into nutrients
b)
They provide shelter for smaller animals
c)
The transfer energy from the sun into food
13.
In a grassland ecosystem, lions prey on wildebeest. The population of lions has declined steadily because of illegal hunting. What will most likely happen to the population of wildebeest?
a)
The wildebeest population will increase
b)
The wildebeest population will decrease
c)
The wildebeest population will remian the same
14.
Humans are not affected by the biodiversity of ecosystems.
a)
True
b)
False
15.
Which biome, because of its climate, has the largest number of species of plants and animals?
a)
tundra
b)
desert
c)
tropical rainforest
d)
pine forest
16.
The underside of a rotting log is an example of a:
a)
Taiga
b)
Microhabitat
c)
Savanna
d)
Biome
17.
Which option is biotic?
a)
Plants
b)
Air
c)
Water
d)
Sunlight
18.
Temperature, light, air, water, and sun are all _____ parts of the environment
a)
alive
b)
biotic
c)
abiotic
d)
living
19.
One characteristic feature of tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a layer of permanently frozen subsoil. This characteristic is known as
a)
glaciation
b)
permafrost
c)
crystallization
d)
soilfrost
20.
Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?
a)
taiga
b)
tundra
c)
deciduous forest
d)
grassland
21.
Which biome is MOST LIKE the "desert" in terms of precipitation?
a)
tropical rainforest
b)
temperate deciduous forest
c)
tundra
d)
coniferous forest
22.
Areas defined by their geographical location and ecological similarity are called?
a)
ecozones
b)
biotopes
c)
biomes
d)
biodomes
23.
A/n ___ consists of all the communities that live in an area and the abiotic features of their environment.
a)
community
b)
population
c)
biome
d)
ecosystem
24.
The gradual, predictable change from one community of organisms to another is called ___.
a)
climax community
b)
ecological succession
c)
ecosystem succession
d)
community
25.
___ succession can take hundreds or even thousands of years to develop into a climax community.
a)
Climax
b)
Ecosystem
c)
Primary
d)
Secondary
26.
Succession that occurs after a forest fire is an example of ____.
a)
primary succession
b)
ecosystem succession
c)
secondary succession
d)
no soil
27.
What type of succession begins only when there is no soil?
a)
climax
b)
primary
c)
secondary
d)
intermediate
28.
The more biodiversity present in an ecosystem, the greater its
a)
temperature
b)
biodiversity
c)
sustainability
d)
age
29.
What is an example of a pioneer species in primary succession?
a)
lichens
b)
mosses
c)
grasses
d)
both a and b
30.
____ succession is a longer process, because it begins with ____.
a)
Secondary, no soil
b)
Primary, no trees
c)
Primary, no soil
d)
Secondary, no trees
31.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
32.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
33.
What is another name for glucose?
a)
Chlorophyll
b)
Chloroplasts
c)
Stomata
d)
Sugar
34.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
35.
A producer is a (n) ______________.
a)
heterotroph
b)
omnitroph
c)
autotroph
d)
oscartroph
36.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
37.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
38.
A food web consists of?
a)
Many overlapping food chains in an ecosystem.
b)
A series of events in which one organism eats another and obtains energy.
c)
Amount of energy that moves from one feeding level to another.
d)
Many types of insects that are stuck.
39.
A third-level consumer has to be which type?
a)
Carnivore.
b)
Decomposer.
c)
Producer.
d)
Herbivore.
40.
How many kilo-calories can the lynx from this food web get if the White Spruce started out with 1000 kilo-calories?
a)
100 kilo-calories
b)
10 kilo-calories
c)
1 kilo-calories
d)
90 kilo-calories
41.
The shrew in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
42.
An inherited trait that helps those organisms that have it to survive
a)
niche
b)
structure
c)
characteristic
d)
adaptation
43.
Coloring or another physical characteristic that help an organism blend in with its environment
a)
mimicry
b)
camouflage
c)
hibernation
d)
migration
44.
When an organism copies a characteristic of something else in order to better its chances for survival and reproduction
a)
hibernation
b)
camouflage
c)
mimicry
d)
migration
45.
_____ is a physical feature or behavior that helps an animal get food, protect itself, move, or reproduce
a)
adaptation
b)
instincts
46.
Where the better adapted organisms survive to pass traits along to offspring.
a)
Evolution
b)
Natural Selection
c)
Extinction
d)
Artifical Selection
47.
What is the advantage of having different shaped beaks?
a)
To look different from other species.
b)
To be able to eat the food readily available in the environment.
c)
To protect itself against predators.
d)
To protect itself against prey.
48.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
49.
Natural selection is when ____________ decide who survives and who doesn't
a)
nature
b)
humans
c)
animals
d)
years
50.
Evidence shows that the wolf is the ancestor to all of the breeds of dogs shown below. How did this variation arise in a relatively short period of time?
a)
A. Genetic manipulation
b)
Natural selection
c)
Random chance
d)
Selective breeding
51.
Which of the following statements is true about selective breeding?
a)
Breeders can control which animals mate.
b)
Breeders can control what mutations will appear in the offspring.
c)
Both A and B are true.
d)
12. Neither A nor B is true.
52.
What causes damage in a hurricane?
a)
Winds
b)
Flooding
c)
Storm Surge
d)
All of the above
53.
Where do hurricanes form?
a)
In a river or stream
b)
Over the ocean
c)
At plate boundaries
d)
Under the Earth
54.
What catastrophic event would be of greatest risk to a grassland?
a)
hurricane
b)
flood
c)
tsunami
d)
wildfire
55.
Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?
a)
A tornado
b)
A volcanic eruption
c)
A flood
d)
A drought
56.
Which is not an impact to the ecosystem after a drought?
a)
Water is scarce and causes organisms to find new sources of water elsewhere.
b)
Floods will wipe out all the vegetation
c)
Herbivores will have to leave and find food elsewhere
57.
A recent flood in the area has caused many short term changes to the ecosystem. Which is a long term change?
a)
Standing water in the streets and sewers
b)
Temporary displacement of organisms
c)
Permanent change in the landscape
d)
Poor water quality in rivers and streams
58.
Caves being formed by acid rain dissolving underground limestone
a)
Weathering
b)
Erosion
c)
Deposition
59.
Deltas forming at the mouths of rivers
a)
Weathering
b)
Erosion
c)
Deposition
60.
Water getting into cracks, freezing, and breaking the rocks or pavement apart
a)
Weathering
b)
Erosion
c)
Deposition
61.
What is mechanical weathering?
a)
Process through which rocks are physically broken into smaller pieces.
b)
Rocks are broken down through chemical changes.
c)
Rocks are worn away from acid in plant roots.
d)
Rocks broken down by machinery.
62.
Glaciers shape and carve away the land beneath them and can drastically reshape the landscape over hundreds or even thousands of years.
a)
True
b)
False
63.
The process of carrying away weathered bits of rocks is called
a)
weathering
b)
erosion
c)
deposition
64.
Watersheds are important because they
a)
prevent surface runoff
b)
increase the soils pore space
c)
removes salt from ocean water
d)
prevents floods and provides fresh water
65.
What do you call the land that water flows across, under, and through on its way to a body of water?
a)
Tributary
b)
River system
c)
Headwaters
d)
Watershed
66.
A layer of permeable rock that allows water to flow through.
a)
ground water
b)
aquifer
c)
subsidence
d)
point source
67.
Water that collects in cracks and pores in underground soil and rock layers.
a)
surface water
b)
ground water
c)
aquifer
d)
watershed
68.
In Texas, why is it dangerous if wastewater is emptied directly into local rivers, lakes, and bays?
a)
Wastewater can flow too quickly into the ocean and cause the sea level to rise.
b)
Wastewater can evaporate and cause air pollution.
c)
Wastewater does not mix well with fresh water, so disrupts the flow of fresh water.
d)
Wastewater often contains contaminants that can kill aquatic organisms.
69.
Most water pollution is the result of __________________.
a)
natural processes
b)
animal waste
c)
human activities
d)
acid rain
70.
There are many different watersheds in the state of Texas. The boundaries of a watershed are determined by
a)
number of people in the region
b)
the number of rivers
c)
height of the land
d)
type of weathering
71.
What is the top of the water-filled spaces in the ground called?
a)
Groundwater
b)
Reservoir
c)
Water Table
d)
Well
72.
Which measures the water's ability to flow through rock and sediment?
a)
fluidity
b)
viscosity
c)
porosity
d)
permeability
73.
What is the source of most surface water and groundwater?
a)
Snow
b)
Precipitation
c)
Run-off
d)
Wastewater
74.
Groundwater is _________ that enters a watershed and is absorbed into the soil.
a)
Snow
b)
Precipitation
c)
Run-off
d)
Saturated
75.
A stimulus is ___________
a)
a change in an organisms surroundings.
b)
process in which organisms grow larger.
c)
a reaction to a change in surroundings
d)
the result of sexual reproduction.
76.
Which of the following is an organism’s reaction to a change in its surroundings?
a)
response
b)
distraction
c)
stimulus
d)
development
77.
Which of the following responses is a plant growing toward or leaning toward light?
a)
thigmotropism
b)
hydrotropism
c)
phototropism
d)
gravitropism
78.
A plant's root grow in a downward direction in response to what force?
a)
sunlight
b)
gravity
c)
soil
d)
turgor pressure
79.
A plants roots grow thicker towards the stream than away from the stream. To what stimulus is the plant responding to?
a)
thigmotropism
b)
gravitropism
c)
photoropism
d)
hydrotropism
80.
A vine plant brushes against a fence and wraps itself around the fence. To what response is the stimulus is the plant responding to?
a)
phototropism
b)
gravitropism
c)
hydrotropism
d)
thigmotropism
81.
Select the correct term for the following definition:
"The water transport system in plants."
a)
Villi
b)
Bronchi
c)
Bolus
d)
Xylem
82.
Recall the main function of a xylem cell.
a)
To transport nutrients (mainly sucrose) to different parts of a plant.
b)
To make energy for the plant via photosynthesis.
c)
To transport carbon dioxide to the leaves for photosynthessis.
d)
To transport water to different parts of plant.
83.
Select the correct term for the following definition:
"The nutrient transport system in plants."
a)
Enzyme
b)
Guard cells
c)
Phloem
d)
Proteins
84.
Recall the main funtion of a phloem cell.
a)
To transport nutrients (mainly sucrose) to different parts of a plant.
b)
To transport water to different parts of a plant.
c)
To make energy for the plant via photosynthesis.
d)
To provide structural support to a plant.
85.
Which Texas ecoregion would most likely have the most evidence of erosion by water?
a)
Gulf Coast Prairies and Marshes
b)
Plains
c)
Prairies
d)
Plateau & Desert/Montane
86.
Most Texas ecoregions are experiencing accelerated rates of _________ that are changing the natural communities within the ecosystems.
a)
Weathering
b)
Erosion
c)
Deposition
d)
Land formation
87.
Texas ecoregions are constantly changing due to natural and human impacts. What characteristic, we have studied, can increase an ecosystem's ability to withstand change?
a)
Survival of the Fittest
b)
Photosynthesis
c)
Natural Selection
d)
Biodiversity
88.
This Texas ecoregion experiences little erosion due to its rich soil with much vegetation where trees are the main plant life.
a)
Woodlands
b)
Plateau and Desert/Montane
c)
Plains
d)
Prairies
89.
Weathering can have which of the following effects in Texas?
a)
Sediment reaching the coast
b)
Building of mountains in west Texas
c)
Breaking down of rocks such as at Enchanted Rock
d)
All the above
90.
Deposition can have which of the following effects in Texas?
a)
Rounding or sharpening of rocks
b)
Forming of sand dunes at the coast
c)
Breaking down of rocks such as at Enchanted Rock
d)
All the above
91.
In the Plains, droughts reduce the amount of plants causing erosion from _____ to be worse.
a)
wind
b)
rain
c)
ice
d)
gravity
92.
The Gulf Coast Prairies and Marshes are often exposed to tropical storms originating in the Gulf of Mexico. Which of the following are effects on the coastline?
a)
reshaped by high winds and waves
b)
eroded and covered by water
c)
shoreline moves landward
d)
All the above
93.
Includes marshes and swamps, high humidity and warm temperatures. waves cause mechanical weathering. sand dunes, sand bars.
a)
Texas Gulf Coast
b)
High Plains
94.
Mostly short grass, dry and very windy. high elevation, Palo Duro Canyon.
a)
Texas Gulf Coast
b)
High Plains
95.
Define Ecoregion
a)
spots in Texas
b)
an area defined by its environment
c)
locations
d)
sections
96.
Which catastrophic event would occur near the High Plains ecoregion of Texas?
a)
earthquake
b)
hurricane
c)
tonadoes
d)
floods
97.
A rock breaking apart by cracking or by acid rain are examples of
a)
weathering
b)
erosion
c)
deposition
98.
Sediments being carried down stream by water or being carried away by wind are examples of
a)
weathering
b)
erosion
c)
deposition
99.
Sediments piling up at the bottom of a hill or at the bottom of the ocean floor are examples of
a)
weathering
b)
erosion
c)
deposition
100.
A statue being broken down by reacting with acid rain is an example of
a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
100 %
