STAAR
®
State of Texas
Assessments of
Academic Readiness
Biology
Administered May 2018
RELEASED
Copyright © 2018, Texas Education Agency. All rights reserved. Reproduction of all or portions of this work is prohibited without express
written permission from the Texas Education Agency.
BIOLOGY
Biology
Page 3
DIRECTIONS
Read each question carefully. Determine the best answer to the question from
thefouranswerchoices provided.Thenfill in theansweronyouranswer
document.
1 The results shown in the picture were obtained using a technique known as gel
electrophoresis. This technique separates mixtures of DNA. In the picture nine different
samples of DNA are compared.
© Extender01/Dreamstime.com
Gel electrophoresis can be used to —
A determine the differences in ages of a set of people
B
identify how closely
two individuals are related
C
determine how effective
certain medications are
D
identify different blood
types
Biology
Page 4
2 The diagram illustrates the activity of vesicles during a cellular process.
Vesicle Activities in a Cell
Golgi apparatus
Vesicles
Cytosol
Plasma
membrane
Which statement best explains the function of the vesicles?
F Delivering packaged materials to the Golgi apparatus for protein synthesis
G
Exchanging genetic information
between the Golgi apparatuses of separate cells
H
Extracting portions of
the Golgi apparatus to be regenerated for growth within the cell
J
Transporting packaged molecules
from the Golgi apparatus to be released out of the cell
Biology
Page 5
3 The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Enzyme Reaction Rates
100 20 30 40 50
Rate of Reaction
Rate of Reaction
20 4 6 8 10 12
Temperature (°C) pH
Based on these data, this enzyme functions best at what temperature and pH?
A Temperature of 27°C and a pH of 4
B
Temperature of 37°C and
a pH
of 6
C
Temperature of 40°C and a pH of 8
D
Temperature of 50°C and a pH of 10
4 The Indian
leaf butterfly has traits that allow it to resemble a leaf. The bright colors of the
monarch butterfly indicate that the butterfly tastes bad and can be poisonous.
How does the appearance of these butterflies help them to survive?
F
The Indian leaf
butterfly is able to avoid predators while the monarch butterfly warns
predators away.
G
The Indian leaf
butterfly frightens predators away while the monarch butterfly poisons
predators before they can eat it.
H
Both butterflies rely
on camouflage to avoid predation.
J
Both butterflies cooperate
with one another to avoid predation.
Biology
Page 6
5 The female reproductive and endocrine systems work interactively for which main purpose?
A To maintain homeostasis by removing waste products from the body
B
To release neurotransmitters
during times of stress
C
To control hormone
levels to prepare the body for pregnancy
D
To exchange gases
to support cellular aerobic respiration
6 Scientists can determine relatedness among organisms by comparing partial amino acid
sequences. The table shows four partial amino acid sequences from four organisms.
Partial Amino Acid Sequence
Organism 1 SER LEU VAL GLU
Organism 2 LEU SER ASN
VAL
Organism 3 ALA
LEU SER GLU
Organism 4 THR LEU SER
GLU
Which organism is
the LEAST related to the other three organisms?
F Organism 1
G
Organism 2
H
Organism 3
J
Organism 4
Biology
Page 7
7 In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses
could be injected into healthy individuals.
How is this method effective in fighting viral diseases?
A The immune system develops antibodies in response to the weakened viruses.
B
The weakened viruses
attach to unaffected viruses in the host and interrupt the viral
reproductive cycle.
C
The rate of
genetic mutation in the host is decreased due to the introduction of weakened
viruses.
D Weakened viruses are unable to enter the host organism.
8 In humans blood type is determined by the A, B, and O alleles. The A and B alleles are
codominant to each other and dominant over the O allele. An individual with the AO genotype
and an individual with the BO genotype can produce offspring with which of the following
phenotypes?
F O only
G
A or B only
H
A, B, or
O only
J
A, B, AB
, or O
9 Which of
these best demonstrates mutualism between certain types of bacteria and humans?
A
Intestinal bacteria obtain
nutrients from the gut and produce vitamin K used by humans.
B
Bacteria become resistant
to antibacterial medication that humans use for treatment.
C
Invasive bacteria at
an area of injury produce toxins that damage healthy tissues of the
human body.
D
Bacteria in improperly
prepared food is consumed by humans, causing food poisoning.
Biology
Page 8
10 What is the role of mRNA in expressing specialized structures?
F Making energy available for cellular activities
G
Creating bonds to
form biomolecules
H
Producing sugars that
assist with replication
J
Providing information to
form proteins
11 A student used a microscope to study four members of the phylum Ciliophora. Members of
this phylum move when propelled by hundreds of tiny cilia.
Paramecium
bursaria
Paramecium
aurelia
Paramecium
multimicronucleatum
Paramecium
caudatum
Although these organisms belong to the same phylum, they are classified as different —
A families
B
species
C
kingdoms
D
orders
Biology
Page 9
12 A mutation in which types of cells would only affect the organism and not future generations?
F Egg cell and liver cell
G
Sperm cell and
egg cell
H
Nerve cell and
brain cell
J
Sperm cell and
lung cell
13 In the mid-1980s an aggressive strain of algae known as Caulerpa was accidentally
introduced into the Mediterranean Sea when a seaside aquarium cleaned out its tanks. The
algae contains a toxin that prevents native herbivores from consuming it. Caulerpa quickly
spread over the sea floor, crowding out many species including sponges, corals, sea fans,
and lobsters.
Which statement explains the most likely impact Caulerpa has had on the biodiversity in the
Mediterranean Sea?
A
The presence of
Caulerpa within an ecosystem is an indicator of the ecosystem’s health.
B
The spread of
Caulerpa improved the habitat for many species of sea grasses, and
increased the biodiversity.
C
Caulerpa interbred with
native species with the same adaptations within the ecosystem.
D
Caulerpa became dominant
within the ecosystem and reduced the biodiversity.
Biology
Page 10
14 A sequence of a DNA template strand is shown.
Phenylalanine
Phenylalanine
Leucine
Leucine
Leucine
Leucine
Leucine
Leucine
Isoleucine
Isoleucine
Isoleucine
Methionine
Valine
Valine
Valine
Valine
Serine
Serine
Serine
Serine
Proline
Proline
Proline
Proline
Threonine
Threonine
Threonine
Threonine
Alanine
Alanine
Alanine
Alanine
Tyrosine
Tyrosine
Stop
Stop
Histidine
Histidine
Glutamine
Glutamine
Asparagine
Asparagine
Lysine
Lysine
Aspartic acid
Aspartic acid
Glutamic acid
Glutamic acid
Cysteine
Cysteine
Stop
Tryptophan
Arginine
Arginine
Arginine
Arginine
Serine
Serine
Arginine
Arginine
Glycine
Glycine
Glycine
Glycine
U C A
U
C
A
G
U
C
A
G
U
C
A
G
U
C
A
G
U
C
A
G
First Base
Third Base
G
mRNA Codon Chart
Second Base
3’ TCC AAT GGC TTA TTT GCA 5’
Which of these is the correct amino acid chain produced from the DNA template strand?
F Arginine - Leucine - Proline - Asparagine - Lysine - Arginine
G
Tryptophan - Phenylalanine
- Leucine - Glycine - Asparagine - Phenylalanine
H
Serine - Leucine
- Proline - Asparagine - Lysine - Arginine
J
Tryptophan - Phenylalanine
- Leucine - Glycine - Asparagine - Serine
Biology
Page 11
15 Plant roots have extensions called root hairs. These root hairs are important in the
homeostasis of the plant.
Root
Root
hairs
Which statement best explains the importance of the root hairs to the stems and leaves of the
plant?
A Root hairs convert minerals into glucose for immediate use by cells.
B
Root hairs decrease
the need for osmosis and diffusion in vascular tissue.
C
Root hairs prevent
water loss in leaves through transpiration and gas exchange.
D
Root hairs increase
the surface area of the roots for nutrient and water absorption.
Biology
Page 12
Himalayan Rabbit
16 The Himalayan rabbit’s habitat has cold, snowy winters and mild summers. The body is
typically covered in white fur except for the nose, feet, tail, and ears, which are covered in
black fur.
A scientist shaved an area
of white fur on the back of a Himalayan rabbit and placed an ice
pack over the shaved area. The shaved area grew black fur.
Which of these best explains why the hair that grew back where the ice pack was placed was
black and not white?
F The genes for black hair were activated by specific temperatures.
G
The white hair mutated
to black hair as the rabbit’s body temperature decreased.
H
The coat color changed
from white to black with the age of the rabbit.
J
White hair only grows
during certain times of the year.
17 A small town in the piney woods of East Texas has a soccer field composed of native grasses.
The soccer field is mowed once a week.
What effect does continual mowing have on the ecology of the field?
A
Mowing increases the likelihood
of nonnative species displacing native species.
B
Mowing increases the number
of species found in the field.
C
Mowing causes different types
of communities to form across the field.
D
Mowing maintains a low
species diversity by inhibiting further succession.
Biology
Page 13
18 Which list correctly identifies characteristics that protists share with animals?
• Motile
• Reproduce
F
sexually
• Photosynthetic
• Motile
• Multicellular
G
• Photosynthetic
H
J
• Eukaryotic
• Motile
• Reproduce
sexually
• Motile
• Prokaryotic
• Multicellular
19 The activities in the cell cycle occur during specific phases. In which phase of the cell cycle is
DNA replicated?
A Mitosis
B
G phase
1
C G
2
phase
D
S phase
Biology
Page 14
20 The table lists some organisms found in a swamp ecosystem and their sources of energy.
Swamp Ecosystem Data
Organism Energy Source
Raccoon Frogs, bird eggs, fish, insects, snails, reptiles, plants
Grass carp Plants, mosquito larvae
Great blue heron Fish, frogs
American alligator Reptiles, birds, fish, mammals
Southern leopard frog Insects
Butterfly orchid Sunlight
Eastern mud turtle Fish, snails, tadpoles, plants, worms, insects
When constructing an energy pyramid of the swamp ecosystem, which of these would be
placed at the top of the pyramid?
F Grass carp
G
American alligator
H
Eastern mud turtle
J
Great blue heron
21
The white cattail is a hybrid species of plant that is a result of the cross between the
broad-leaved cattail and the narrow-leaved cattail. Over time, the white cattail has
established itself in the wetlands of Midwestern states.
Which of these explains the success of the white cattail?
A
Favorable genes from
parental generations provide advantageous characteristics to the
hybrid species.
B
Hybridization produces offspring
traits that allow different species to survive in extreme
environments.
C
Inherited traits passed
on from parental generations make hybrid species more
susceptible to disease.
D
Hybrid species display
more adaptations due to their reduced genetic diversity.
Biology
Page 15
22 An individual who participates in a long-distance run on a hot day will produce large quantities
of sweat. As a result of the excessive sweating, the amount of urine produced by the kidneys
will change.
How will the kidneys respond to help the individual’s body maintain homeostasis?
F The kidneys will decrease urine production so the body can maintain blood pH.
G
The kidneys will
increase urine production to eliminate excess salt in the body.
H
The kidneys will
decrease urine production to allow the body to conserve water.
J
The kidneys will
increase urine production so the body can absorb more nutrients.
23 The gray squirrel, Eastern fox squirrel, and red squirrel are all different species of squirrels.
Why is having a scientific name for each species of an organism important?
A
To prevent existing
named organisms from having their names changed as they become
extinct
B
To keep the
classification system from being altered as new organisms are discovered
C
To allow organisms
to be placed in many classification levels at the same time
D
To standardize the
naming and organization of organisms to avoid confusion
Biology
Page 16
24 Students are given data from an investigation that identified some of the chemical elements
present in four different samples.
Elements Present in Samples
Sample Elements
1 Hydrogen, phosphorus, and nitrogen
2 Aluminum, silicon, and copper
3 Calcium, potassium, and nitrogen
4 Iron, oxygen, and magnesium
Which sample was most likely DNA?
F
Sample 1
G
Sample 2
H
Sample 3
J
Sample 4
25
Saprophytes are fungi that feed on dead and decomposing organisms. They secrete enzymes
that digest components of cell walls, such as cellulose and lignin.
Which statement explains why these fungi are an important part of the biogeochemical cycle?
A
Saprophytes perform gas
exchange that assists the cellular activities of autotrophs.
B Saprophytes extract minerals from living tissue to recycle them back into the soil.
C
Saprophytes transport nutrients
through the xylem and phloem in autotrophs.
D
Saprophytes return organic
material to the soil for use by living organisms.
Biology
Page 17
26 An advertisement for a health supplement for dogs claims to build lean muscle and strengthen
tendons and ligaments, as well as provide energy. Which two biomolecules must the
supplement contain to provide these benefits?
F Carbohydrates and lipids
G
Proteins and carbohydrates
H
Nucleic acids and
carbohydrates
J
Lipids and nucleic
acids
27 Scientists have observed many types of tropical fish moving beyond their traditional ocean
ranges into waters that have historically been more temperate. These fish compete for food
with native fish, consuming much from the kelp forests and beds of sea grass.
The expansion of the ranges of tropical fish was most likely caused by —
A
agricultural runoff that
contributes to dead zones in the ocean
B
global droughts that
raise the salt concentration of ocean waters
C
the rising temperatures
of ocean waters
D
acid rain pollution
that lowers the pH of ocean waters
Biology
Page 18
28 The diagram shows light- and dark-colored beetles that live on a tree.
Which result is most likely to occur to the beetle population due to predation over time?
F The number of light-colored beetles in the population will increase.
G
There will be
more dark-colored beetles than light-colored beetles.
H
The number of
light-colored beetles will decrease.
J
The dark-colored beetles
will move to a different type of tree.
Biology
Page 19
Predator and Prey Relationship
29 In cattle the allele for cloven hooves (H) is dominant over the allele for mule-foot hooves (h).
The phenotype for each trait is shown in this picture.
Cloven hooves Mule-foot hooves
What is the probability of cloven hooves in the offspring of parents that are heterozygous for
the trait?
A 25%
B
50%
C
75%
D
100%
Biology
Page 20
30 A corn plant produces both male and female flowers. The male flower forms the tassel and the
female flower forms the ear of corn. The silks that emerge from the ear are the stigma of the
female flower. Each silk leads to an ovule that can become a corn seed.
Corn Plant
Ear
Silks
Pollen
Tassel
Which of these must happen for corn seeds to develop on the ear?
F More tassels than silks need to be present on the same plant.
G
Pollen grains must
fall from tassels and land on the silks of the ear.
H
Pollen must be
transported from the tassel to the silk through the phloem.
J
The tassels must
come into direct contact with the silks of the ear.
Biology
Page 21
31 Adaptations that result from natural selection are expected to increase the fitness of an
organism. In terms of natural selection, which of the following best describes fitness?
A Being able to escape from predators
B
Being among the strongest organisms in
a population
C
Being able to survive, find a
mate, and produce offspring
D
Being able to survive long enough
to reach the adult stage
32 In the early 1900s, Thomas Hunt Morgan was among the first scientists to contribute to the
chromosome theory of heredity. Morgan’s investigations into heredity in fruit flies led him to
propose that the event represented in the diagram sometimes occurs.
Which statement about the event represented
in the diagram is valid?
F The event represents RNA translation in the smooth endoplasmic reticulum.
G
The event takes place in
bacterial cells.
H
The event produces genetically identical
daughter cells.
J
The event provides genetic diversity
in eukaryotic cells.
33 The human body is composed of organ systems. Which list represents a system organized
from least to most complex?
A
Heart
o
cardiac muscle
o
muscle tissue
o
muscle cell
B Lung tissue
o
trachea
o
nostrils
o
circulatory system
C
Muscle cell
o
muscle tissue
o
biceps muscle
o
muscular system
D Integumentary system
o
skin cell
o
hair
o
sweat glands
Biology
Page 22
34 Some components of cells are listed.
1. Cytoplasm
2. Nucleus
3. Chloroplasts
4. Cell Wall
5. Cell membrane
Which of the components could be observed using a microscope in a prepared slide of leaf
epidermal cells but not in a prepared slide of human cheek cells?
F
Components 2 and
3 only
G
Components 3 and
4 only
H
Components 1, 2,
and 3 only
J
Components 1 and
5 only
35 Niles Eldredge and Stephen Jay Gould researched the lenses of the eyes of fossil trilobites of
different species. In 1972 they published a paper in which they described the tendency of a
species to remain the same until a sudden change in the environment causes a new related
species to appear.
Which hypothesis was most challenged by the work of Eldredge and Gould?
A
Redi’s hypothesis
that spontaneous generation does not occur
B Haeckel’s hypothesis that embryological development mimics the evolution of species
C
Wallace’s hypothesis
that geography affects the distribution of species
D
Darwin’s hypothesis
that the development of species is a slow, gradual process
Biology
Page 23
36 Which part of a DNA molecule is responsible for the direct coding of specific traits in an
organism?
F The number of hydrogen bonds that hold the strands of DNA together.
G
The number
of carbons in the DNA molecule.
H
The sequence
of nucleotide bases in the DNA molecule.
J
The sequences
of phosphates along each DNA strand.
37 When mammals get an infection, their internal body temperature often rises 2 to 3 degrees
Celsius. The body gets the energy it needs to react to an infection by —
A
increasing
the rate of cellular division
B
decreasing
the rate of glucose movement into the cell
C
increasing
the rate of cellular respiration in mitochondria
D decreasing the rate at which carbon dioxide is removed from the cell
38 Scientists use zebra fish to study human genetic diseases because zebra fish and humans
share many of the same genetic diseases.
Which statement describes why zebra fish experience similar genetic diseases as humans?
F Zebra fish have an omnivorous diet similar to that of humans.
G
Zebra
fish have nucleotide sequences similar to those of humans.
H
Zebra
fish go through embryonic stages similar to those of humans.
J
Zebra
fish produce gametes through a process that is similar to that of humans.
Biology
Page 24
1. 2.
39 How do the circulatory system and immune system work together to respond to an injury?
A Increased blood flow kills healthy cells which prevents infection at the site of the injury.
B
Increased blood flow removes
infected cells from the body at the site of the injury.
C
Increased blood flow carries
white blood cells to the site of the injury.
D
Increased blood flow allows
for an increase in the exchange of
O
2
and
CO
2
at the site of the
injury.
40 A student groups different types of cells as shown.
Which table headings
should the student use for the two groups?
F
1. Animal Cells 2. Plant Cells
G
1. Prokaryotic Cells 2. Eukaryotic Cells
H
1. Mobile Cells 2. Motile Cells
J
1. Fungal Cells 2. Bacterial Cells
Biology
Page 25
41 Enchanted Rock State Natural Area is located in Central Texas. Enchanted Rock is a dome of
granite. The area contains four easily identifiable communities. The table describes
characteristics of each type of community in the area.
Communities in Enchanted Rock State Natural Area
Type of Community Dominant Characteristics
Open oak woodland
Several species of oaks, cacti, and some scattered
grasses among scattered boulders
Mesquite grassland
Mesquite trees, abundant grasses in areas with thick
soil, and few boulders
Floodplain
A thick mix of trees, shrubs, grasses, and numerous
wildflowers; floods with heavy rains
Granite rock Barren rock with lichen patches
A student studying primary succession should focus on which of these communities?
A
Open
oak woodland
B
Mesquite
grassland
C
Floodplain
D
Granite
rock
Biology
Page 26
Cladogram
Penicillata
Glomeridesmida
Sphaerotheriida
Glomerida
Polyzoniida
Stemmiulida
Spirostreptida
Merocheta
42 The relationships among different orders of millipedes are shown in the cladogram.
Based on
this cladogram, which statement best describes relationships among millipede
orders?
F Stemmiulida is more closely related to Merocheta than Penicillata is to Merocheta.
G
Spirostreptida
is more closely related to Glomerida than Sphaerotheriida is to Glomerida.
H
Polyzoniida
is more closely related to Glomeridesmida than Sphaerotheriida is to
Glomeridesmida.
J
Merocheta
is more closely related to Glomeridesmida than Glomerida is to
Glomeridesmida.
Biology
Page 27
Molecule X Molecule Y
H
H
O
C
COH
HO C H
HCOH
CH OH
CH
2
OH
O PO
O
–
O
CH
2
3’
O
H
OH
U
A
G
A
H
O
O PO
O
–
CH
2
3’
O
H
OH
H
O
O
P
O
O
–
CH
2
3’
O
H
OH
H
O
O
P
O
O
–
CH
2
3’
H
OH OH
H
O
43 Two biomolecules are shown.
Which of the
following best describes these biomolecules?
A Molecule X and Molecule Y are both carbohydrates.
B
Molecule X
is a nucleic acid, and Molecule Y is a carbohydrate.
C
Molecule X
and Molecule Y are both nucleic acids.
D
Molecule X
is a carbohydrate, and Molecule Y is a nucleic acid.
Biology
Page 28
44 In North American forests, two species of birds, nuthatches and brown creepers, forage on
the same trees for insects. Brown creepers feed on insects found near the bottom of the tree
trunk, while nuthatches feed on insects in the top part of the tree.
The difference in foraging behavior most likely affects the nuthatches and brown creepers
by —
F allowing the birds to avoid many types of predators
G
reducing competition
between the birds for resources
H
preventing the
birds from interbreeding with each other
J
establishing dominance
between the birds for nesting sites
45 Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures.
The high temperatures increase the rate of respiration in the plants, thus reducing the sugar
content in some fruits.
Why does increased respiration in the leaves and stems reduce the sugar content in the fruits
of a plant?
A
Chloroplasts move
from the fruits to the leaves and stems to provide energy
for respiration.
B
The flow
of nutrients shifts from the phloem to the xylem, moving nutrients away from
the fruits.
C
Sugars are
moved from the fruits to the roots for storage.
D
Sugars produced
in the leaves are used as an energy source instead of being stored
in fruits.
Biology
Page 29
G
2
p
h
a
s
e
G
1
p
h
a
s
e
S
p
h
a
s
e
Arrow 2
Arrow 1
46 This model of the cell cycle includes two arrows that each represent a process in the cycle.
What do
the two arrows represent?
F Arrow 1 represents prophase, and Arrow 2 represents interphase.
G
Arrow
1 represents mitosis, and Arrow 2 represents meiosis.
H
Arrow
1 represents interphase, and Arrow 2 represents mitosis.
J
Arrow
1 represents meiosis, and Arrow 2 represents prophase.
47 Which statement explains how producers are dependent upon consumers for their survival?
A
Consumers
supply oxygen for producers to undergo aerobic respiration.
B
Consumers
produce carbon dioxide for producers to use during photosynthesis.
C
Consumers
provide chemical energy needed by producers for cellular respiration.
D
Consumers
make lactic acid that producers use in photosynthesis.
Biology
Page 30
48 Which of these describes a difference between viruses and cells?
F Cells contain protein, and viruses contain only carbohydrates.
G
Viruses
have flagella, and cells have only cilia.
H
Cells
reproduce independently, and viruses require a host to reproduce.
J
Viruses
have membranes made of proteins, and cells have membranes made of nucleic
acid.
49
As part of the nitrogen cycle, animals acquire some amino acids by doing which of the
following?
A
Breathing
air
B
Eating
plants
C
Drinking
water
D
Producing
waste
50 Which two body systems must directly interact for vertebrate organisms to exchange gases?
F
Skeletal
system and muscular system
G Excretory system and reproductive system
H
Circulatory
system and respiratory system
J
Digestive
system and immune system
Biology
Page 31
Images of Different Humerus Bones
Gorilla Pongo Pan Sivapithecus
51 The image shows part of the humerus bone in different genera of primates.
Which statement
is best supported by the observable structures of the different humerus
bones?
A The primates lived in similar environments.
B
The
primates shared a common ancestor.
C
The
primates interbreed with similar organisms in a population.
D
The
primates had diets that consisted of similar types of foods.
Biology
Page 32
52 A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood
cells.
Hemoglobin Gene Mutation
G A G
Normal gene
mRNA
Protein
Mutation
G A G
C T C
GLU
Normal
protein
G T G
Mutated gene
G U G
C A C
DNA
VAL
Mutated
protein
Which of these mutations most likely results in the mutated hemoglobin gene?
F Insertion
G
Deletion
H
Duplication
J
Substitution
Biology
Page 33
Meadow Food Web
Hawk
Dragonfly
Fox
Frog
Snake
Rabbit
Ladybug
Mouse
Aphid
Butterfly
Bird
Berries Grasshopper Seeds
53 A partial meadow food web is shown.
Based on
this food web, which organisms are direct sources of energy for secondary
consumers?
A Aphid
Bird
Rabbit
B
Ladybug
Fox
Dragonfly
C
Frog
Butterfly
Berries
D
Mouse
Snake
Hawk
Biology
Page 34
Levels of Biological Organization
o
o
Population community ecosystem
o
o
Organism community population
o
o
Organism population community
o
o
Ecosystem population community
STOP
54 The diagrams show some of the levels of biological organization.
In what order are
the levels in the diagrams?
F
G
H
J
BE SURE YOU HAVE RECORDED ALL OF YOUR ANSWERS
Biology
Page 35
ON THE ANSWER DOCUMENT.
STAAR
Biology
May 2018
