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Life Science Unit Test

Total questions: 103

Worksheet time: 6hrs 45mins

Name
Class
Date
1.

A producer is something that:

a)

Eats plants

b)

Makes its own food

c)

Eats animals

d)

Eats plants and animals

2.

Producers are always at the __________ of a food chain

a)

Beginning

b)

Middle

c)

End

d)

Producers are not part of the food chain

3.

Consumers...

a)

Make their own food

b)

Go through photosynthesis

c)

Eat other organisms

d)

Breathe in carbon dioxide

4.

Which of these things is NOT a consumer

a)

Human

b)

Whale

c)

Tree

d)

Chicken

5.

What do the arrows show in this food chain:


plant → grasshopper → bird → snake → owl.

a)

The arrow points from the organism being eaten to the organism that eats it.

b)

The arrow points from the organism that eats it to the organism that is being eaten.

c)

The arrow points from biggest animal to smallest animal.

d)

The arrow points from the consumers to the producers.

6.

What is the producer in this food chain?


phytoplankton → krill → fish → shark

a)

Phytoplankton

b)

Krill

c)

Fish

d)

Shark

7.

As you move through a food chain, the amount of energy stored....

a)

Increases

b)

Decreases

c)

Stays the same

d)

It depends on the ecosystem

8.

Arrows in a food web show the flow of

a)

energy

b)

protein

c)

nutrients

d)

glucose

9.

Multiple food chains that interact together is called a ....

a)

Spider Web

b)

Food Spider

c)

Food Web

d)

Web of Food

10.

What do decomposers eat?

a)

Dead things

b)

Living things

11.

Mushroom (Fungus)

a)

Decomposer

b)

Producer

c)

Consumer

12.

Trees

a)

Decomposers

b)

Consumers

c)

Producers

13.

Falcon

a)

Decomposer

b)

Consumer

c)

Producer

14.

What are the two REACTANTS in photosynthesis?

a)

Carbon dioxide and oxygen

b)

Water and sunlight

c)

Water and carbon dioxide

d)

Glucose and sunlight

15.

What does an ecosystem NEED to survive?

a)

Sunlight

b)

Oxygen

c)

Carbon Dioxide

d)

All of the above

16.
Another word for a living thing is a:
a)
animal
b)
organism
c)
plant
d)
community
17.
If the population of prey increases, the population of predators will ________because of the availability of food.
a)
decrease
b)
stay the same
c)
increase
18.
How does a bird "change its environment" to meet its NEEDS?
a)
builds a nest
b)
flies around
c)
catches bugs
d)
looks for something to eat
19.

What non-living factor is the most important for an ecosystem to work?

a)

Rock

b)

Sun

c)

Plants

d)

Animals

20.
A meadow has too many rabbits. What would help balance this ecosystem?
a)
more rain that grass needs
b)
more foxes that eat rabbits
c)
fewer foxes that eat rabbits
d)
more grass for the rabbits to eat
21.
Which term best describes two predators living in the same habitat who feed on the same prey?
a)
coexistence
b)
competition
c)
mutualism
22.
The Texas Kangaroo Rat, native to north-central Texas, makes its home in mesquite bushes.  If the mesquite bushes are cleared for human homes , which of the following is the most probable result?
a)
The rat population will rise (increase).
b)
The rat population will decline (decrease).
c)
The rat population will stay the same.
d)
The rat population will double.
23.
Which example shows a relationship between a living thing and a non-living thing?
a)
An insect is food for salmon.
b)
Water carries a rock downstream.
c)
A tree gets nutrients from the soil.
d)
A flower makes food for a butterfly.
24.
Which of these is an example of one living thing depending on another living thing?
a)
Cat walking on the sand
b)
Bird building a nest in a tree
c)
Dog warming in the sunlight
d)
Squirrel drinking water
25.

Living and nonliving things interacting in an environment is called:

a)

Organism

b)

Producer

c)

Consumer

d)

Ecosystem

26.

When an animal blends in with its surroundings, it's using ______

a)

Mimicry

b)

Camouflage

c)

Compression

d)

Carnivore

27.

The flat teeth of an antelope are teeth used for eating ___________________.

a)

Grass

b)

Wood

c)

Bugs

d)

Large animals

28.

Which item is not an adaptation for a lion to get food?

a)

Sharp teeth

b)

Sharp claws

c)

Fluffy tail

d)

Sense of smell

29.

A turtle's shell helps him

a)

For swimming

b)

For eating

c)

For protection

30.
The spotted fur of a leopard and spotted skin of a leopard gecko are shown in the photographs below. 
How do these body coverings help organisms in their environments?
a)
They help organisms find food.
b)
They help organisms look like another animal in its environment.
c)
They help organisms eat food quickly.
d)
They help organisms blend into their surroundings. 
31.

Colorful flowers with a sweet smell help some plants meet their needs in their habitat because they will be better able to -

a)

Attract insects

b)

Collect sunlight

c)

Survive the cold

d)

Absorb rainwater

32.

A snowshoe hare has many structural adaptations that help it survive in its environment.

Which adaptation of the snowshoe hare provides warmth and camouflage in its cold and snowy environment?

a)

Long, flexible ears

b)

Large, brown eyes

c)

Thick, white fur

d)

Wide, strong feet

33.

Tigers are excellent predators. To survive, they hunt and eat other animals in their environment.


All of the following characteristics of a tiger help it to be an effective predator EXCEPT -

a)

Sharp teeth and claws

b)

A thick coat of fur

c)

Powerful jaws and limbs

d)

Good eyesight and hearing

34.

How does a grasshopper's green color help it to survive on the prairie? The green color helps the grasshopper -

a)

Locate its sources of food

b)

Avoid being seen in its habitat

c)

Gain energy when in sunlight

d)

Make its own food

35.

Which of the following is an example of behavioral adaptation in Canada Geese?

a)

Shape of the beak

b)

Shape of the feet

c)

Body movement in water

d)

Migration towards south

36.

How does the giraffes long neck help it survive in the African grasslands? This structure functions to help the giraffe

a)

Run very quickly

b)

Reach tree branches

c)

Drink from ponds

d)

Hide from predators

37.

The bright, red color of the male cardinal is a structure that helps it -

a)

Hide from predators

b)

Find the food it eats

c)

Absorb sunlight for warmth

d)

Look attractive to females

38.

Why might some plants have thorns?

a)

To protect themselves

b)

To look pretty

c)

To take in nutrients

d)

To provide shade for the plant

39.

An animal has webbed feet. It’s eyes, ears, and nose are on top of its head. What kind of habitat do you think this animal lives in?

a)

The habitat has water

b)

The habitat is dry

c)

The habitat is very windy

d)

The habitat has little or no light

40.

Animals such as elephants and walruses have tusks. How to tusks help the animal?

a)

Tusks help them swim

b)

Tusks help them camouflage

c)

Tusks look pretty to other animals

d)

Tusks protect the animal when fighting

41.

characteristics passed from parent to offspring

a)

inherited traits

b)

learned behavior

c)

camouflage

d)

environment

42.

behaviors acquired by an organisms interactions with its environment/parents

a)

learned behaviors

b)

inherited traits

c)

inherited behaviors

d)

mimicry

43.
Some traits and behaviors are learned and some are inherited. Which of the following traits are inherited?
a)
Speaking Spanish
b)
Bird saying hello
c)
Cat using a litter box
d)
Spines on a cactus
44.
Which of the following is a behavior that is learned?
a)
shape of a beak
b)
monkey riding a bicycle
c)
horse eating hat
d)
snake eating mice
45.
When danger approaches, a black bear mother will send a warning call to her cubs.  The cubs will then climb a tree.  This response is
a)
an environmental trait
b)
an inherited trai
c)
a learned behavior
d)
a personality trair
46.
 Which of the following is a behavior? 
 
a)
running when startled
b)
having very sharp teeth
c)
having a good sense of smell
d)
having long legs
47.
 If a trait is learned or caused by the environment, then                                       
a)
it can be changed
b)
it can be passed on to offspring
c)
it cannot be changed
d)
it cannot be passed on, but could be taught to offspring
48.
Which of these human traits is not inherited?                  
a)
the language a person speaks
b)
the color of a person's eyes
c)
the color of a person's hair
d)
being able to laught
49.
A dog runs after a thrown stick and brings it back to its owner. What type of behavior is the dog showing?          
a)
an instinct
b)
an inherited trait
c)
a learned behavior
d)
an innage behavior
50.
Which of the following is a learned behavior
a)
a snake slithering on the ground
b)
bees pollinating flowers
c)
a duck swimming in a pond
d)
a dog fetching a newspaper
51.
A dog owner feeds his new dog in its sleeping crate.  Soon the dog runs to its crate when it is hungry.  This behavior is an example of
a)
inherited behavior
b)
learned behavior
c)
instinct
d)
migration pattern
52.
Which of the following organisms can learn a behavior?
a)
an apple tree
b)
a dandelion
c)
a rabbit
d)
a rose bush
53.
Smelts are fish that lay their eggs in the sand on beaches.  When the eggs hatch, the babies know to go to the water.  This is an example of
a)
instinct
b)
hibernation
c)
camouflage
d)
learned behavior
54.
Which example is a physical feature passed on to offspring?
a)
talking 
b)
walking
c)
sharp beak
d)
loose tooth
55.
Raccoons living in cities have learned to open lids of garbage cans.  This is an example of an animal-
a)
adapting to its environment
b)
inheriting the ability to change its diet
c)
being tamed by humans
d)
becoming a plant eater
56.
Crows are black birds with excellent hearing.  In the wild they live 6-7 years.  Some crows in Japan open hard shelled nuts by dropping them in front of moving cars.  Which of these is a learned behavior?
a)
excellent hearing
b)
living 6-7 years
c)
dropping nuts in front of cars
d)
having black feathers
57.
Which of the following is most likely a learned behavior?
a)
a lizard warming itself in the heat of the sun
b)
a cat running to the kitchen at the sound of a can opener
c)
butterflies migrating from Canada to Mexico each year
d)
a caterpillar feeding on milkweed plant
58.
Everyday a rancher feeds his new horses in the barn at 5:00 p.m.   Soon the horses start heading for the barn at 4:55 p.m.  This behavior is an example of-
a)
an instince
b)
an inherited behavior
c)
a migration pattern
d)
a learned behavior
59.
In the ADULT stage, the organisms job is 
a)
to hatch
b)
to eat
c)
to change 
d)
to reproduce
60.
What is the last stage of the butterfly life cycle?
a)
egg
b)
pupa
c)
adult
d)
larva
61.
The second stage in incomplete metamorphosis is a/an_.
a)
embryo
b)
adult
c)
nymph
d)
larva
62.
The process in which some organisms change form during different stages of life is called_.
a)
germinate
b)
life span
c)
direct development
d)
metamorphosis
63.
After a frog hatches from an egg it looks just like an adult frog.
a)
True
b)
False
64.
The type of life cycle where the young look like miniature adults is called _________ .
a)
direct development
b)
complete metamorphosis
c)
incomplete metamorphosis
d)
miniatureization
65.
In the LARVA stage, the organisms job is 
a)
to hatch
b)
to eat
c)
to change 
d)
to reproduce
66.
In the EGG stage, the organisms job is 
a)
to hatch
b)
to eat
c)
to change 
d)
to reproduce
67.
In the PUPA stage, the organisms job is 
a)
to hatch
b)
to eat
c)
to change 
d)
to reproduce
68.
Which of the following goes through DIRECT DEVELOPMENT for its life cycle?
a)
butterfly
b)
dog
c)
oak tree
d)
grasshopper
69.
Which of the following goes through COMPLETE METAMORPHOSIS for its life cycle?
a)
butterfly
b)
dog
c)
oak tree
d)
grasshopper
70.
How many stages are there in the butterfly life cycle?
a)
6
b)
4
c)
3
d)
5
71.
What is the stage of the caterpillar called?
a)
pupa
b)
adult
c)
egg
d)
larva
72.
What is a life cycle?
a)
process of changing from one form to another
b)
changes an animal goes through during its life
c)
larva spins this covering out of silk or grows hard shells
73.
List the four stages of the complete metamorphosis life cycles in the correct order. 
a)
Egg, Pupa, Larva, Adult
b)
Egg, Larva, Pupa, Adult
c)
Adult, Egg, Larva, Pupa
d)
Adult, Egg, Pupa, Larva
74.
What are the stages called that show how a caterpillar turns into a butterfly?
a)
Life Cycle
b)
Process
c)
Growing Up
d)
Life Steps
75.
An _________________ is fully grown.
a)
egg
b)
adult
c)
larvae
d)
pupa
76.
A immature ______________ looks very similar to its parents.
a)
nymph
b)
adult
c)
egg
d)
pupa
77.
What is the second stage of a frog called?
a)
froglet
b)
egg
c)
frog
d)
tadpole
78.
What life cycle?
a)
bird
b)
horse
c)
lizard
d)
frog
79.

Fertilizers used on farms near the coast can be carried to the ocean when runoff occurs during rain showers. These fertilizers can decrease the populations of fish and shellfish. Which other populations most likely decrease as a result? (5.9C)

a)

Organisms that eat algae

b)

Organisms that live on farms

c)

Organisms that eat fish and shellfish

d)

All of these

80.

Data for four animal populations in a wooded area were collected before and after a shopping mall was constructed near the area. The graph shows changes in the populations. Which animal's food sources most likely increased after the mall opened? (5.9C)

a)

Snakes, squirrels, and raccoons

b)

Squirrels only

c)

Snakes, squirrels, and deer

d)

Raccoons only

81.

The nesting habits of four types of birds are described in the table. If all the dead branches and dying trees in a wooded area are removed, which bird's nesting habit would be most affected? (5.9C)

a)

Baltimore oriole

b)

Barn swallow

c)

Downy woodpecker

d)

Belted kingfisher

82.

Prairie dogs eat plants and dig underground tunnels. Prairie dog tunnels help break up hard prairie soils, and the animals' waste adds nutrients to the soil. In the past, large groups of prairie dogs lived in many parts of the U.S. Great Plains, but people have destroyed most of these colonies. Which of these will most likely happen when prairie dogs are removed from an area? (5.9C)

a)

The population of predators that eat prairie dogs will decrease.

b)

The population of plants that prairie dogs eat will decrease.

c)

The nutrients in the soil will increase.

d)

The number of underground tunnels will increase.

83.

Wild Texas hogs, similar to the one shown here, are descended from hogs brought here from other countries. These wild hogs eat many different kinds of foods, including plants, fungi, and insects. Besides being very destructive to the habitats of other animals, how do wild hogs most likely harm other animals? (5.9C)

a)

By competing with other animals for food

b)

By moving slower than most other animals

c)

By causing other animals to reproduce more

d)

By eating foods that no other animals eat

84.

This picture shows a type of plant called kudzu. Kudzu is a fast-growing Asian vine that was introdued into the United States. Kudzu quickly uses available resources and can completely cover the plants in an area. What effect does the rapid growth of kudzu most likely have on an ecosystem? (5.9C)

a)

The variety of native plants decreases.

b)

The water supply in the area increases.

c)

Weather patterns in the area change.

d)

The number of other plants increases.

85.

How does a bird "change its environment" to meet its NEEDS?

a)

builds a nest

b)

flies around

c)

catches bugs

86.

An ______________ is a system made up of all the biotic and abiotic factors in an area and all the interactions among them.

a)

ecosystem

b)

habitat

c)

population

87.

Why would humans cut down forests?

a)

to build roads

b)

to build buildings

c)

to build factorys

d)

all of the above

88.

Which of the following would have a NEGATIVE impact on an ecosystem

a)

constructing highways

b)

planting trees

c)

recycling paper

89.

Which is NOT an example of a natural environmental change?

a)

a beaver dam

b)

a hurricane

c)

a housing development

90.

When the last member of a species dies, the species becomes

a)

extinct

b)

endangered

c)

dead

91.

In a pond ecosystem, what would happen to frogs if the insect population decreased?

a)

There would be more frogs in the pond

b)

There would be more insects in the pond

c)

There would be less frogs in the pond

92.

A squirrel makes a change to its environment when it —

a)

climbs a tree

b)

digs a hole to bury an acorn

c)

collects acorns

93.

What is overpopulation?

a)

all living things that belong to the same group and live in the same area

b)

having too many people or organisms in a particular area

c)

the place where an organism lives

94.

Natural disasters can also change ecosystems. What can organisms do if a disaster happens?

a)

Fight, Survive, Struggle

b)

Move, Adapt, Die

c)

Stay, Sleep, Survive

95.

Changes to an environment may make it more difficult for an organism to find-

a)

food.

b)

shelter.

c)

water.

d)

all of the above

96.

Which picture below is mostly positive???

a)
b)
c)
d)
97.

If humans cleared a forest to build homes, we would expect _____________.

a)

fewer tree-dwelling animals

b)

increased insect populations

c)

more development of soil

98.
Water is an example of...
a)
Biotic Factor
b)
Abiotic Factor
99.

A NATURAL change to an ecosystem occurs when

a)

a severe drought causes plants to die.

b)

trees are cut down to make paper.

c)

roads are built through a forest.

100.

Which of the following is a natural disaster that could wipe out an ecosystem?

a)

a sunny day

b)

a rain storm

c)

a forest fire

101.

In what ways can humans change an ecosystem?

a)

by making a region flood

b)

by creating hurricanes

c)

by adding to the amount of pollution in an ecosystem

102.

When animals graze so much that the vegetation is damaged

a)

fertilize

b)

overpopulation

c)

overgrazing

103.

All negative impacts on an ecosystem are caused by humans.

a)

true

b)

false

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