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Worksheets

6th and 7th STAAR Tested Life Science

Total questions: 123

Worksheet time: 1hrs 27mins

Name
Class
Date
1.
a)

F

b)

G

c)

H

d)

J

2.
a)

F

b)

G

c)

H

d)

J

3.
a)

F

b)

G

c)

H

d)

J

4.
a)

F

b)

G

c)

H

d)

J

5.
a)

F

b)

G

c)

H

d)

J

6.
a)

A

b)

B

c)

C

d)

D

7.
a)

F

b)

G

c)

H

d)

J

8.
a)

A

b)

B

c)

C

d)

D

9.
a)

253

b)

200

c)

353

d)

400

10.
a)

F

b)

G

c)

H

d)

J

11.
a)

F

b)

G

c)

H

d)

J

12.
a)

A

b)

B

c)

C

d)

D

13.
a)

A

b)

B

c)

C

d)

D

14.
a)

A

b)

B

c)

C

d)

D

15.
a)

A

b)

B

c)

C

d)

D

16.
a)

A

b)

B

c)

C

d)

D

17.
a)

A

b)

B

c)

C

d)

D

18.
a)

A

b)

B

c)

C

d)

D

19.
a)

F

b)

G

c)

H

d)

J

20.
To what does the “X” in the diagram refer?
a)
a water table
b)
a watershed
c)
a floodplain
d)
a divide
21.

Watersheds are important because they

a)

prevent surface runoff

b)

increase the soils pore space

c)

prevents floods and provides fresh water

d)

removes salt from ocean water

22.

Most water pollution is the result of __________________.

a)

natural processes

b)

animal waste

c)

human activities

d)

acid rain

23.

Rapid growth of algae in a pond is often the result of...

a)

excess nutrients from fertilizer runoff

b)

loss of habitat due to commercial building

c)

clogged river tributaries entering a lake

d)

flooding that causes water levels to rise

24.

Large nets are used to capture fish. These nets often catch unnecessary species that are not used by humans. What change could lessen the negative effect of using large nets for commercial fishing?

a)

exploring new and uncharted areas of the ocean where the nets can be used

b)

using nets in deeper regions of the oceans where different organisms live

c)

designing nets that release unwanted species without harming them

d)

decreasing the size of the nets, but using more of them

25.
The line graph below shows the average amount of dissolved nutrients in a body of water each year from 1998 to 2003.
Which human activity most likely affected this body of water between 2000 and 2003?
a)
discharging warm water into the body of water
b)
adding chemical fertilizers to water
c)
burning fossil fuels
d)
dumping litter in the water
26.

A scientist made the drawings above to show how the root structures of a plant species changed over time.

Complete the sentece below:

Based on these drawings, the plant species MOST LIKELY lived in an area that changed from a ......

a)

desert into a tundra

b)

rainforest into a tundra

c)

grassland to a desert

d)

mountaintop into a hill

27.

Which of the following is the LEAST affected by seasonal environmental conditions?

a)

the number of crickets that hatch

b)

size and number of pecans on a tree

c)

growth height of sunflowers

d)

length of horns on a steer

28.

Complete the passage below.

Clown fish live in the waving tentacles of sea anemones in the ocean. The sea anemone provides a safe place for the clown fish to escape predators. The sea anemone, although it has poisonous​ tentacles, does not bother the clown fish and is not harmed by the clown fish. This relationship between organisms can be described as ​ ​ (a)  

Choose from the below words
mutualism
commensalism
parasitisim
predation
29.

According to the food web above, which organism(s) prey on suckerfish? (more than one correct answer)

a)

beaver

b)

muskrat

c)

suckerfish

d)

trout

30.

At which temperature range will the least amount of competition take place?

a)

5°C to 10°C

b)

20°C to 25°C

c)

25°C to 30°C

31.
Which two organisms in this food web are COMPETING for food with each other?
a)
Cougar and Deer
b)
Rabbit and Snake
c)
Insects and Grass
d)
Shrew and Mouse
32.
This graph shows ....
a)
When one population inceases, the other decreases. 
b)
When one population decreases, the other inceases. 
c)
When one population increases, the other increases instantly. 
d)
When one population increases, the other increases shortly after. 
33.
Which of the following is not a biotic factor?
a)
mushroom
b)
air
c)
elephant
d)
coyote
34.
Which of the following is not an abiotic factor?
a)
sun
b)
temperature
c)
soil
d)
grass
35.
What does biodiversity mean?
a)
Only one species in an area.
b)
The different amount of species in an area
c)
All abiotic life
d)
Nitrogen fixation
36.
(8.11C) Some scientists studying aquatic plants notice that flooding often leads to a decrease in the rate of photosynthesis among aquatic plants. Flooding causes more sediment to be suspended in the water. The increased sediment concentration decreases the amount of light that reaches the plants. Why does a decreased rate of photosynthesis lead to a decrease in a plant population?
a)
Less water is available for absorption.
b)
Less tissue is available for plant growth.
c)
Less energy is available for reproduction.
d)
Less soil is available for leave development.
37.
Copper compounds are used to control the growth of algae and other aquatic plants. Copper interferes with photosynthesis in these organisms. What would be the most likely result of an accidental spill of these compounds in an aquatic environment?
a)
Fish would grow larger than usual
b)
Zooplankton would increase
c)
Plants would increase in size and decrease in number
d)
The plant populations would be reduced
38.
During a period of drought, members of a community may volunteer to water their lawns every other day, rather than daily. The most important benefit of this action is -
a)
It conserves the groundwater supply.
b)
It reduces air pollution
c)
It fertilizes the soil
d)
It adds nitrogen to the soil
39.
What are all the factors that affect the amount of runoff?
a)
area receives, type of soil, shape of land, vegetation
b)
air, water, ice, dirt
c)
type of percipitation , shape of land, vegetation
40.

An ____________ are all living and nonliving things that interact with each other in the environment.

a)

organism

b)

population

c)

community

d)

ecosystem

41.

The role of an organism within its environment and community (affecting its survival as a species) is known as its _____

a)

living system

b)

niche

c)

ecosystem

42.

A diagram of a prairie food web is provided. Which organism in this food web gets its energy, indirectly, from prairie grass?

a)

Squirrel

b)

Mountain lion

c)

Robin

d)

Eagle

43.

2. Any level above the base of an energy pyramid can only store roughly ​ (a)   percent of the energy contained in the level below it.

Choose from the below words
10
25
50
70
44.

1. Which one of the following is another name for producers (plants)?

a)

Heterotrophs

b)

Mesotrophs

c)

Autotrophs

d)

Chemotrophs

45.

Why do you think a food web can recover, even if the population of one of the heterotrophs (consumers) is reduced?

a)

Other organisms may feed on the food the population of heterotrophs would have eaten

b)

It can't recover.

c)

A population decreasing would not affect a food web.

46.

A bird that eats seeds converts the energy stored in the seeds into the energy of its flight muscles. This conversion is from what kind of energy to what other kind of energy?

a)

Mechanical energy to thermal energy

b)

Chemical energy to mechanical energy

c)

Sound energy to radiant energy

d)

Radiant energy to chemical energy

47.

Which ecosystem has the greatest biodiversity?

a)
b)
48.

According to the illustration, which biome has the tropical temperatures (highest) and highest precipitation (rain)

a)

Tundra

b)

Desert

c)

Tropical Rainforest

d)

Grassland

49.

Which of the following would be flora?

a)

Lion

b)

Acacia Tree

c)

Zebra

d)

Savanna Grass

e)

Thorn Bush

50.

Which of the following would be fauna?

a)

Lion

b)

Acacia Tree

c)

Zebra

d)

Savanna Grass

e)

Thorn Bush

51.

Match the following

a)

Cold/Northern Forest

Conifer Trees (Pine)

Very Little Biodiversity

1.

Temperate Forest

b)

Medium Temperatures

4 Seasons

Deciduous Trees

2.

Taiga (Boreal Forest)

c)

Most Biodiversity

Very HOT/HUMID

Very Rainy

3.

Tropical Rainforest

d)

Very DRY

Lots of NOCTURNAL animals

Low Biodiversity

4.

Desert

e)

Very Cold

No trees

Very little Biodiversity

5.

Tundra

52.

What do you call the first organism to inhabit an area during a succession event?

a)

Pioneer Species

b)

Climax Community

c)

Equilibrium

d)

Shrubs

53.

What is the last stage of succession called?

a)

Pioneer Species

b)

Climax Community

c)

Lichens and Moss

d)

Primary Succession

54.

A state of balance in a system is referred to as...

a)

Equilibrium

b)

Primary Succession

c)

Pioneer Species

d)

Microhabitat

55.

A small area that has a different group of organisms and conditions that the surrounding area is called a(n) ______.

a)

Microhabitat

b)

Ecosystem

c)

Lichen

d)

Catastrophic Event

56.

The type of succession that happens when new land is formed and there is only bare rock on the ground is..

a)

Primary Succession

b)

Secondary Succession

c)

Tertiary Succession

d)

Producer Succession

57.

The type of succession that occurs after a disruption such as a natural disaster wipes out a previously existing ecosystem?

a)

Primary Succession

b)

Secondary Succession

c)

Tertiary Succession

d)

Producer Succession

58.

How is secondary succession different from primary succession?

a)

Primary already has soil

b)

Secondary already has soil

c)

Secondary starts on bare rock

d)

Primary starts after a disturbance

59.

What are the pioneer species for primary succession?

a)

Lichens and Moss

b)

Grasses and weeds

c)

Shrubs

d)

Trees

60.

An illustration and a dichotomous key are given. What is the correct classification for this organism?

(a)  

61.
A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between
arachnids and insects?
(a)  
Choose from the below words
Presence of antennae
Jointed legs
Body segments
Presence of eyes
62.
When using a dichotomous key to identify organisms, what do we look at?
(a)  
a)

physical features

b)

weather patterns

c)

environment

d)

diet

63.

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

(a)  

64.
What is the name of bird W?
(a)  
Choose from the below words
Geospiza
Certhidea
Camarhynchus
Platyspiza
65.

A characteristic or trait that helps an organism survive in its environment is a/an ​ ​ (a)  

Choose from the below words
adaptation
skill
variation
natural instinct
66.

Variation in​ (a)   would best help bison survive a harsh winter

Choose from the below words
fur thickness
Leg length
Hearing quality
Hoof size
67.

The gills have allowed a fish to adapt to living underwater because gills allow the fish to (a)  

68.

A giraffe has a long neck in order to better reach leaves to eat. This is an example of _____.

a)

an adaptation

b)

environment

c)

response

d)

stimulus

69.
Which feature helps an animal hide from other animals?
a)
looking like a dangerous animal
b)
being the same color as the place it lives (camoflauge)
c)
having sharp claws or a strong shel
d)
having only a few young and caring for them
70.

which is the learned behavior?

a)

shape of beak

b)

monkey riding bicycle

c)

horse eating hay

d)

snake eating mice

71.

Which of the following is an inherited trait?

a)

swimming

b)

eye color

c)

skateboarding

d)

callused fingers

72.
Which feature of a rose helps it grow without being eaten by large animals?
a)
flowers with bright colors
b)
sharp thorns
c)
small seeds
d)
deep roots
73.

Determine if the traits are structural or behavioral.

a)

Migration

1.

Behavioral because it makes animals move away and find better resources

b)

Hibernation

2.

Behavioral because it allows animals to save energy

c)

Camouflage

3.

Structural because it allows organisms to hide in plain sight

d)

Venom

4.

Structural because it is a chemical defense

e)

Storage of food in bulb

5.

Structural because it allows plants to save energy for later use

74.

Where the better adapted organisms survive to pass traits along to offspring.

a)

Evolution

b)

Natural Selection

c)

Selective breeding

d)

Artifical Selection

75.

Natural selection means that what is changing over time?

a)

The inherited traits of a population.

b)

The acquired traits of a population.

c)

Hair color and eye color

d)

Attractive features.

76.

Why are favorable (advantageous) traits more likely to be passed onto offspring?

a)

Organisms that have them are more likely to survive and reproduce.

b)

Favorable traits come from dominant alleles.

c)

Favorable traits come from recessive alleles.

d)

Because the trait is an acquired phenotype.

77.

Which organisms are most likely to survive?

a)

the best adapted

b)

the fastest

c)

the strongest

d)

the most domesticated

78.
Do organisms "decide" to evolve and change?
a)
Yes, they know they need to change to survive 
b)
No, they change because of natural selection
79.
The differences among a species, like different bird beaks, are called
a)
genes.
b)
variations.
c)
traits.
d)
theories.
80.

Which of the following is a RANDOM process?

a)

evolution

b)

selective breeding

c)

genetic mutation

d)

natural selection

81.

The group of organs that work together to circulate blood through the body, supply oxygen and nutrients, and remove waste

a)

Digestive System

b)

Organelle

c)

Organ system

d)

Circulatory System

82.

The group of organs that regulate the body by secreting hormones into the bloodstream; also control growth, reproduction, and metabolism

a)

Endocrine System

b)

Muscular System

c)

Digestive System

d)

Integumentary System

83.

A group of organs and tissues specialized for the rapid transmission and processing of information

a)

Photosythesis

b)

Digestive system

c)

Nervous system

d)

Endocrine system

84.

The group of organs that work together to break down food by physical and chemical processes into nutrients that the body can use

a)

Digestive System

b)

Endocrine System

c)

Integumentary System

d)

Respiratory System

85.

A group of organs that function to provide structural support and protect internal organs

a)

Excretory System

b)

Digestive System

c)

Skeletal System

d)

Circulatory System

86.

A collection of body systems that filter and remove excess fluids and waste from the body; includes the digestive, urinary, respiratory, and integumentary systems

a)

Muscular System

b)

Integumentary System

c)

Excretory System

d)

Respiratory System

87.

A system of organs and tissues that protects the body from external damage and water loss

a)

Muscular System

b)

Integumentary System

c)

Endocrine system

d)

Circulatory system

88.

Match the following

a)
1.

Circulatory system

b)
2.

Respiratory system

c)
3.

skeletal system

d)
4.

Muscular system

e)
5.

Digestive system

89.

Reorder the following

a)

Cells

b)

Tissue

c)

Organ

d)

Organ System

e)

Organism

1)
2)
3)
4)
5)
90.

What level of organization is made of organs?

a)

Organ system

b)

organism

c)

cells

d)

tissue

91.

The stomach is made of which to levels of organization?

a)

tissues and organs

b)

cells and tissues

c)

organ systems and organisms

d)

cells and organ

systems

92.

Tissues are made of what?

a)

organs

b)

everything

c)

cells

d)

tissues

93.
This is a example of ........
a)
cell
b)
organ system
c)
organ
d)
tissue
94.
This is a example of ........
a)
organ
b)
organ system
c)
tissue
d)
cell
95.
What is the most complex level of organization? 
a)
tissue
b)
organism 
c)
organ system 
d)
cell 
96.

What is a cell?

a)

Groups of similar types of cells that work together to carry out a specific task

b)

Groups of different tissues working together to perform a particular job

c)

Groups of different organs working together to complete a series of tasks

d)

The smallest unit of life

97.

This is an example of....

a)

cell

b)

tissue

c)

organ

d)

organ system

98.
This organelle is a rigid outer layer that protects plant cells.
a)
Cell Membrane
b)
Cell Wall
c)
Nucleus
d)
Chloroplast 
99.

This organelle controls what goes in and out of plant and animal cells.

a)

Cell Wall

b)

Cell Membrane

c)

Chloroplasts

d)

Cytoplasm

100.

The _____________ stores food, water, wastes, and other materials in both plant and animal cells.

a)

Vacuole

b)

Mitochondria

c)

Cytoplasm

d)

Nucleus

101.
An organelle that captures energy from the sunlight in order to use it to produce food in plant cells is ______________.
a)
Chromatin
b)
Chloroplast
c)
Cytoplasm
d)
Cell Membrane
102.

Which of the following is NOT an organism?

a)

bee

b)

paramecium

c)

heart

d)

gorilla 

103.

If cells make up all living things, are they also considered to be living? 

a)

yes

b)

no

104.

Cancer cells are formed when mutated cells divide and rapidly increase in number. Which part of the cell theory is associated with the production of cancer cells? 

a)

1. All living things are made of up cells. 

b)

2. Cells are the fundamental unit of life.

c)

3. All cells come from preexisting cells.

d)

None of them. 

105.

What part of the cell theory does the information in the table relate to?

a)

All living things are made up from cells.

b)

New cells come from existing cells.

c)

Cells contain genetic material in the nucleus.

d)

All cells perform similar necessary functions.

106.

An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?

a)

All amoebas have a regular, spherical shape.

b)

All amoebas move rapidly using cilia.

c)

All amoebas have organelles called chloroplasts.

d)

All amoebas come from other amoebas.

107.

1. All the following are examples of asexual reproduction except _____

a)

budding in yeast

b)

binary fission in protists

c)

pollination of a flower

d)

a potato eye developing a bud

108.

Which of the following statements best describe the offspring in sexual reproduction?

a)

Offspring are identical to the parent.

b)

Offspring are identical only to the mother, but not the father.

c)

Offspring are identical only to the father, but not the mother.

d)

Offspring are diverse and look different from the parents.

109.

Which of the following statements best describe an offspring produced by asexual reproduction?

a)

The offspring has the same identical genetic information as the parent.

b)

The offspring contains only the mother's genetic information.

c)

The offspring contains only the father's genetic information.

d)

The offspring has some genetic material from both parents.

110.

Which of the following represents sexual reproduction?

a)
b)
c)
d)
111.

The Appalachian shoestring fern reproduces asexually. What can be concluded about the offspring of this fern? The genetic material of the offspring of the Appalachian shoestring fern _____

a)

is different for each individual offspring.

b)

varies greatly from one generation to the next.

c)

could never be predicted with any reliability.

d)

is identical to that of the parent plant.

112.

1. All the following are examples of asexual reproduction except _____

a)

budding in yeast

b)

binary fission in protists

c)

pollination of a flower

d)

a potato eye developing a bud

113.

Which of the following statements best describe the offspring in sexual reproduction?

a)

Offspring are identical to the parent.

b)

Offspring are identical only to the mother, but not the father.

c)

Offspring are identical only to the father, but not the mother.

d)

Offspring are diverse and look different from the parents.

114.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
115.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
116.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
117.
Scientific study of how traits are passed to offspring through genes
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
118.
Alternate form of a gene for a single trait; may be dominant or recessive
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
119.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
Gene
b)
Pedigree
c)
Punnett Square
d)
Dominant
120.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
121.
Which of the following is the correct organization of genetic material from largest to smallest? 
a)
DNA→ genes → chromosomes→ nucleus 
b)
genes →DNA→ chromosomes → nucleus 
c)
nucleus→ chromosomes→ DNA → genes 
d)
chromosomes→ DNA→ nucleus→ genes
122.
What is unicellular? 
a)
one cell 
b)
many cells 
c)
no nuclues 
d)
DNA 
123.

Which type of cells do not possess a nucleus and do not have membrane bound organelles.

a)

eukaryotes

b)

prokaryotes

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