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7th Grade Science Term 2 Final Exam

Total questions: 60

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
GMO stands for
a)
genetically made organism
b)
genetically modified organism
c)
gene manipulated organism
d)
Genetic mutant organism
2.
What is the benefit of geneticially modified organisms?
a)
They may be better looking or more productive/effective
b)
They are easily reproduced
c)
They are higher in population
d)
They live longer/stronger
3.
Insecticide resistance is one of the main reasons for GMO crops.
a)
True 
b)
False
4.

True or False-GMO's have been proven to be harmful for humans to consume.

a)

True

b)

False

5.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

a)

There would be a decrease in the small bird population.

b)

There would be a decrease in the grass/flowers population.

c)

There would be a decrease in the mice population.

d)

There would be an increase in the grass/flowers population.

6.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
7.
A food chain shows the transfer of ___ from one organism to another. 
a)
matter
b)
consumers
c)
energy
d)
habitat
8.
Which represents the largest group in a food web?
a)
carnivores
b)
omnivores
c)
herbivores
d)
producers
9.
Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?
a)
Population
b)
Resources
c)
Community
d)
Competition
10.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
11.

How are similarities passed from parent to offspring?

a)

through teaching

b)

through learning

c)

through blood

d)

through genes

12.

Why do offspring usually look like their parents?

a)

Their parents choose their features and make sure they look similar to themselves.

b)

The offspring adapt to their surroundings making them look more like their parents

c)

Offspring receive characteristics that have been passed down from their parents

13.
Ostriches and gazelles eat together.  They both watch for predators and danger.  Since they see things differently, they each can identify threats the other animal may not see.  Both species are benefited.  
a)
mutualism
b)
commensalism
c)
predation
d)
parasitism
14.
Mistletoe takes water and nutrients from the oak tree. This is good for the mistletoe but bad for the tree.
a)
mutualism
b)
commensalism
c)
parasitism
d)
competition
15.
A bison walks through the grass, insects fly up and are seen and eaten by egrets.  This neither harms nor helps the bison, but it is easier for the egrets to get food.
a)
mutualism
b)
parasitsm
c)
commensalism
d)
competition
16.
In this food web, the grasshopper and the mouse have this relationship:
a)
mutualism
b)
commensalism
c)
competition
d)
predation
17.
In this food web, the snake and the mouse have this relationship
a)
mutualism
b)
commensalism
c)
predation
d)
parasitsm
18.
A flea feeds on a mouse’s blood.  This is good for the flea but bad for the mouse.
a)
mutualism
b)
commensalism
c)
parasitism
d)
competition
19.

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

a)

keystone

b)

invasive

c)

engineer

d)

predator

20.

A species that does not belong in a balanced ecosystem, comes in, and changes it (usually for the worse).

a)

flagnship

b)

umbrella

c)

invasive

d)

predator

21.
In this food chain, what will happen if the frogs become extinct?
a)
The snakes will increase.
b)
The grasshoppers will decrease.
c)
The eagles will remain the same.
d)
The grasshoppers will increase.
22.

What do we call the variety of life in an ecosystem?

a)

Producer

b)

Biology

c)

Biodiversity

d)

Keystone Species

23.

Select dominant phenotypes. (More then 1 answer)

a)

HH

b)

Hh

c)

hh

d)

None

24.

Select Recessive traits:

a)

TT

b)

Tt

c)

tt

d)

None

25.

Being able to roll the tongue is a dominant trait (T). Not being able to roll the tongue is a recessive trait (t). A persons genes are tt. Which trait would they have?

a)

Able to roll the tongue

b)

Not able to roll the tongue

c)

Can't tell

26.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
27.
The genotype of:  bb   will have the PHENOTYPE of...
a)
black fur
b)
white fur
c)
course hair
d)
fine hair
28.

Black hair (H) is a dominant gene in guinea pigs and black yellow (h) is recessive. What color hair would a guinea pig have if it got a recessive gene (h) from mom and a dominant gene (H) from dad?

a)

Black hair

b)

Yellow hair

c)

Can't tell

29.

The trait that will always be expressed if one copy of an allele is present.

a)

recessive

b)

dominant

c)

co-dominant

30.

The trait that will be expressed only if two copies of the allele are present.

a)

recessive

b)

dominant

c)

co-dominant

31.

A child has blue eyes, but both of her parents have brown eyes. What are the genes for each person?

a)

She's adopted; a child can't have a different trait from their parent

b)

Child = BB; Mom = BB; Dad = BB

c)

Child = bb; Mom = BB; Dad = Bb

d)

Child = bb; Mom = Bb; Dad = Bb

e)

Child = BB; Mom = Bb; Dad = Bb

32.

The information that is passed from parent to offspring:

a)

cell

b)

gene

c)

trait

d)

nucleus

33.

Which is not an advantage for asexual reproduction?

a)

Less genetic variation

b)

No need for a mate

c)

Quick

d)

Produces more offspring

34.

Pairs of thread-like molecules, which live in the cell's nucleus, and carries heredity information are called

a)

chromosomes

b)

genes

c)

DNA

d)

mitosis

35.

Made of DNA this is the basic physical and functional unit of heredity.

a)

chromosomes

b)

genes

c)

DNA

d)

nucleus

36.

Fully grown parent cells split into two halves resulting in two daughter cells with the exact DNA as the parent.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

37.

A parent cell breaks into pieces and each piece becomes a new offspring.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

38.

What type of asexual reproduction is taking place?

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Regeneration

e)

Vegetative Reproduction

39.

There are two types of reproduction :

a)

semisexual reproduction

b)

asexual reproduction

c)

bisexual reproduction

d)

sexual reproduction

40.

Sexual reproduction involve the _______________

a)

one parent

b)

two parents

c)

fusion of male gamete and female gamete

d)

have same characteristic with parents

e)

have different characteristic with parents

41.

Asexual reproduction involve

a)

two parents

b)

one parent

c)

produced large numbers of individuals

d)

same characteristics with parent

e)

different characteristics with parent

42.

What are some advantages of asexual reproduction are: (select all that apply - there are 3)

a)

it only requires one organism

b)

it takes less energy than sexual reproduction

c)

offspring are already well-adapted for the environment

d)

there is a lot of genetic variety

43.

Some advantages of sexual reproduction include: (select all that apply - there are 3)

a)

genetic variation

b)

improves chances of adapting to the environment

c)

helps species survive catastrophes

d)

it doesn't take as much energy as asexual reproduction

44.
To adjust to a changing environment
a)
Mutation
b)
Adapt
45.
The gradual change in species over time is...
a)
Evolution
b)
Nucleotide 
c)
Adaptation
d)
Natural Selection
46.
What is another name for natural selection?
a)
survival of the smartest
b)
survival of the fastest
c)
survival of the biggest
d)
survival of the fittest
47.
This is the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.
a)
Competiton
b)
Extinction
c)
Evidence
d)
Fossil
48.
What would indicate that a series of fossils represent evolution?
a)
the fossils were identical
b)
the fossils were found in the same layers of rock
c)
the fossils show similarities
d)
the fossils were completely different
49.

Adaptations are:

a)

physical or behavioral tendencies.

b)

physical or behavioral characteristics that help an organisms survive and reproduce.

c)

physical or behavioral characteristics that do not help the organism in any way.

d)

genetic mutations that have gone wrong.

50.
Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? 
a)
Evolution 
b)
Variation 
c)
Adaptation
d)
Natural Selection 
51.
Which of these describes a species that has become extinct?
a)
fewer members of the species are dying than being born
b)
more members of the species are dying than being born
c)
very few members of a species are alive
d)
all members of a species have died
52.
The Florida panther is a large cat related to lions. Panthers eat deer, rodents, and farmers' livestock. Panthers once lived in Tennessee. Which of these most likely caused panthers to disappear from Tennessee?
a)
Panthers in Tennessee were unable to reproduce.
b)
People hunted panthers and destroyed their habitats.
c)
Natural predators killed and ate all the panthers in Tennessee.
d)
Panthers in Tennessee ran out of food. 
53.
A large herd of goats lives in a field full of poison ivy.  Some goats are able to eat the poison ivy while others have become sick when they eat it. Over time the herd as a whole will tend to
a)
Become more likely to eat poison ivy.
b)
Become less likely to eat poison ivy.
c)
Not change in the proportion of goats that can and can not eat poison ivy.
d)
Eat all the poison ivy and leave only plants all the goats can eat.
54.
The clear wing moth and the wasp look similar to each other. Why? 
a)
The wasp mimics the moth to attract prey.
b)
The moth and the wasp are closely related
c)
The moth mimics the wasp to repel predators
d)
The moth had one wasp parent
55.

Organisms, like bacteria, insects and worms, that break down waste are called ___

a)

carnivore

b)

herbivores

c)

decomposers

56.
A hawk is an example of a
a)
consumer
b)
producer
c)
decomposer
57.
An apple tree is a
a)
producer
b)
consumer
c)
decomposer
58.
A mushroom is a 
a)
producer
b)
consumer
c)
decomposer
59.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
60.
An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
a)
They break down dead organisms to return nutrients to the soil.
b)
They produce their own food for survival.
c)
They play a role in preventing weathering and erosion.
d)
They provide most of the energy to consumers.

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