Science
rd
3
9 Weeks Review
TEKS
3.9, 3.10
TEKS 3.9A
1. The more limited the supply of resources
within an ecosystem, _____________________.
A
B
C
D
the larger the animal population.
the more predators there are.
the greater the competition.
the larger the variety of animals there are.
TEKS 3.9A
2. The most basic parts of an ecosystem are
made up of _____________.
F sunlight, soil, and air
G living things
H populations and communities
J living and nonliving things
TEKS 3.9A
3. Which of these sets of animals would you
expect to find in a fresh water-related
environment?
A
B
C
D
Foxes, rabbits, mice
Sharks, snails, butterflies
Fish, frogs, turtles
Seals, penguins, owls
TEKS 3.9A
4. Which of the following could not survive in a
forest ecosystem?
F
G
H
J
Moss
Cactus
Shrubs
Ferns
TEKS 3.9A
A nearby park contains a large deer population. Lately, the
deer have been jumping the fences at night and eating the
shrubs in the gardens of the people who live near the park.
5. What can you conclude?
A The deer have become less afraid of people
B People are feeding the deer
C The deer are no longer content with the food available in
the park
D The deer population has become too dense for the park.
TEKS 3.9B
Study the food chain below.
Sun
dandelion
rabbit
fox
cougar
1. Using this food chain, which statement BEST describes a relationship
between the populations in this community?
A
B
C
D
The dandelions receive energy from the cougar
The fox receives energy from the cougar
The dandelions receive energy from the Sun
The rabbit receives energy from the fox
TEKS 3.9B
Study the food chain below.
Sun
dandelion
rabbit
fox
cougar
2. How would the community most likely change if the rabbits were
removed?
F The cougar population would decrease
G The dandelion population would decrease
H The fox population would increase
J The cougar population would increase
TEKS 3.9B
3. Which of the following would be a top-level
consumer in an ocean food chain?
A
B
C
D
Squid
Great White shark
Lantern fish
Shrimp
TEKS 3.9B
4. Which of the following is a fact?
F There is only one food chain in an
ecosystem
G Food chains do not occur in ecosystems
H There are many food chains in an
ecosystem
J There are two food chains in an ecosystem
TEKS 3.9B
5. Which of the following would be a producer
within a food chain?
A Plant-eating animals
B Animals that eat other animals
C Animals that are not eaten by other
animals
D Plants
TEKS 3.9C
The marsh willow herb is a plant native to the northeastern United
States.
It grows best in damp environments.
1. Which of the following environmental changes would most likely
cause a decrease in the marsh willow herb population in an area?
A
B
C
D
A rainstorm lasting several weeks
A drought lasting twelve months
Unusually low temperatures during the month of July
Unusually high temperatures during the month of January
TEKS 3.9C
2. Which human activity is most harmful to the
natural environment?
F Swimming in a lake
G Riding a bicycle
H Cutting down a rain forest
J Using solar energy
TEKS 3.9C
3. Which organisms would benefit most from a
forest fire?
A Large animals like deer that eat forest plants
B Small animals like squirrels that live in trees
and eat seeds
C Large plants and trees that take many years to
grow
D Small plants and shrubs that need lots of
sunlight to grow
TEKS 3.9C
An isolated population of butterfly lives in a damp meadow. The
larvae feed only on a species of violet plant that lives in the meadow.
The adult does not fly far from the violet plants. One summer, a virus
causes the violet plants to die.
4. As a result of the absence of violets, the butterfly population will
most likely __________________.
F increase and flourish
G decrease to a level near extinction
H switch to a different type of food
J evolve immediately into a new species of butterfly
TEKS 3.9C
A hurricane moves through a rural environment. It uproots
trees and leaves debris in the freshwater streams and ponds.
5. What effect will the hurricane have on the animal life of
the ecosystem?
A New habitats are created for the plants and animals
B Food supplies for the animals are increased from the
clearing of land
C Native animal populations will decrease from lack of
shelter and food
D Animal populations will remain the same
TEKS 3.10A
1. Owls hunt for food mostly at night. How do owls
find food in the dark?
A Owls use their feet to scratch and find seeds
B Owls sit in trees and wait for food to move
closer
C The eyes of owls open very wide to see in dim
light
D Owls find food using antennas
TEKS 3.10A
2. If you saw a bird with a sharp, pointed beak,
you could infer that the bird _______________.
F
G
H
J
eats insects
eats twigs
eats leaves
eats mushrooms
TEKS 3.10A
3. Animals have adaptations that help them
survive. One example of an adaptation is the
giraffe’s long neck. What primary purpose does this
adaptations serve?
A
B
C
D
Protection from heat
Protection from predators
Increased speed
Gathering of food
TEKS 3.10A
4. The main function of a fish’s fins is to help
the fish ________________.
F reproduce
G see
H breathe
J move
TEKS 3.10A
5. How do sharp spines on a cactus help it
survive?
A They absorb sunlight
B They provide support for the plant
C They keep animals away from the plant
D They carry food to the flower
TEKS 3.10B
1. Which of the following is NOT an inherited
trait?
A
B
C
D
Number of limbs
Flower color
Weight
Shape of leaves
TEKS 3.10B
2. Which of the following is an example of a
learned behavior?
F Being able to read
G Being able to breath
H Having a scar
J Having brown eyes
TEKS 3.10B
3. Which is not an example of an animal
responding to it environment?
A
B
C
D
A female dog has puppies
A bear hibernates at the beginning winter
A lizard sunning itself on a rock
A snake moving slower during cold
weather
TEKS 3.10B
4. Which BEST explains why some dogs have longer
ears than others?
A They do different activities
B They eat different types of food
C They inherit their ear length from their
parents
D They inherit their ear length from their
offspring
TEKS 3.10B
5. Which of the following is most likely a
learned behavior?
A
B
C
D
A chimpanzee using a stick to get food
A dog coming when called
An archerfish knocking an insect off a leaf
All of the above
TEKS 3.10C
1. Trees start as seeds and grow into mature
trees that produce more seeds. This pattern
represents a ___________________.
A
B
C
D
food chain
life cycle
food supply
life span
TEKS 3.10C
2. A saguaro cactus can grow up to 50 feet tall, but
it grows less than 1 inch in its first 10 years. Which
of the following is true?
F The saguaro grows the most after its first 10
years
G A 50 food saguaro is less than 10 years old
H The saguaro reaches its full size at age eleven
J A full grown saguaro is 5 times the size of a
one year old saguaro
TEKS 3.10C
3. Which of the following structures does a frog
develop as it changes from a tadpole to an adult
frog?
A
B
C
D
Eyes
Heart
Lungs
Tail
TEKS 3.10C
4. Which of the following best represents one
particular stage in a life cycle?
F
G
H
J
A fish swimming
A seed sprouting
A leaf growing
A dog eating
TEKS 3.10C
5. Which of the following happens first?
A
B
C
D
The seed germinates
The plant produces flowers
Fruit forms around the flower’s seeds
Animals and insects feed on the nectar in
the flower
Common Assessment 3.9
1. This habitat would be BEST for which of the
following pets?
A
B
C
D
Lizard
Fish
Butterfly
Bird
Common Assessment 3.9
2. Which of the following characteristics do all
environments share?
F All are cold in winter and hot in summer
G All have the same types of plants and animals
H All provide the resources necessary to support
living organisms
J All exist only on dry land
Common Assessment 3.9
3. Which of these animals would MOST LIKELY survive in
an environment that is cold and snowy most of the year?
A
C
B
D
Common Assessment 3.9
Earthworms feed on decaying plant and animal matter in soil. They also need
moisture in order to survive. A third grade classroom decided to set up a
habitat to keeps earthworms in their classroom.
Habitat
1
2
3
4
Soil Type
Silt with clay
Silt with clay
Soil with humus
Soil with humus
Moisture
Low
Medium
Low
Medium
Temperature
Cool
Warm
Cool
Warm
4. Which habitat from the table above would provide the BEST environment
for the earthworms?
A
B
C
D
Habitat 1
Habitat 2
Habitat 3
Habitat 4
Common Assessment 3.9
5. Which of these animals would MOST LIKELY
be found living and feeding on the forest floors
of Texas?
F
G
H
J
Bat
Trout
Deer
Eagle
Common Assessment 3.9
6. Which of the following is a living part of a
desert in Texas?
A
B
C
D
Prickly pear cactus
Horned Lizard
Rattlesnakes
All of the above
Common Assessment 3.9
Tropical rain forests have more plant growth than any other
type of environment. One reason may be due to the amount
of rainfall in the tropical rain forest.
7. What is another reasonable explanation for having the
most plant growth?
F Temperatures are warm all year long in the rain forest
G People do not cut down trees in the rain forest
H The leaves high in the forest canopy absorb most of the
sunlight
J Many birds and insects in the rain forest eat plants
Common Assessment 3.9
8. Which of the following would not be found in
a ocean?
A
B
C
D
Jellyfish
Squid
Kelp
Not here
Common Assessment 3.9
9. A girl is studying an animal that lives in a hot,
humid area with plenty of shade. In which
environment does this animal MOST LIKELY live?
F
G
H
J
Artic
Prairie
Desert
Rain forest
Common Assessment 3.9
The diagram below shows a beaver lodge built
using materials found in their environment.
10. The diagram shows that beavers use trees
found within their environment for ____________.
A
B
C
D
air.
water.
food.
shelter.
Common Assessment 3.9
11. When trees begin to develop leaves in the
spring, changes occur on the forest floor. Why
do these changes occur?
F Rainfall increases
G Sunlight is reduced
H Winds increase
J Snowfall increases
Common Assessment 3.9
1. Plants and animals must have their needs
met by their environment in order to survive.
Describe how an ocean environment meets the
needs of an animal in it.
Common Assessment 3.9
2. Explain why a polar bear could not survive in
a desert environment.
Common Assessment 3.10
1. Which of the following is a true statement
about the life cycles of plants and animals?
A Neither organism has a complete life cycle
B Animals have more life stages then plants
C Plants and animals both go through life
cycle stages
D Plants have more life stages then animals
Common Assessment 3.10
2. Which shows the correct order of the corn
plant life cycle shown above?
F 4, 1, 3, 2
G 3, 4, 1, 2
H 3, 1, 4, 2
J 4, 3, 2, 1
Common Assessment 3.10
3. The diagram above represents a __________.
A
B
C
D
food chain.
life cycle.
food supply.
life span.
Common Assessment 3.10
4. Which stage is NOT part of the cricket’s life
cycle?
F Nymph
G Adult
H Larva
J Egg
Common Assessment 3.10
5. At what stage during this life cycle are seeds
produced?
A
B
C
D
Stage W
Stage Y
Stage Z
Stage X
Common Assessment 3.10
6. The diagram shows the life cycle of a darkling
beetle. Which stage is shown at Y?
F Adult
G Larva
H Pupa
J Egg
Common Assessment 3.10
7. Which simple diagram shows the life cycle of a
frog?
A
C
B
D
Common Assessment 3.10
8. The stages of an organism’s development are
called a ______________.
F migration cycle.
G life cycle.
H hibernation cycle.
J food chain.
Common Assessment 3.10
9. Which of the following units of measurement
would be used for reporting the mass of a
poison-arrow frog?
A
B
C
D
Centimeters
Millimeters
Grams
Metric ton
Common Assessment 3.10
10. Which BEST shows the life cycle of a berry
bush?
F
H
G
J
Common Assessment 3.10
1. Describe in your own words the life cycle of a
tomato plant.
Common Assessment 3.10
2. Describe two ways the plant has changed.