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Science 9 Unit A Biodiversity

Total questions: 70

Worksheet time: 56mins

Name
Class
Date
1.

What does DNA stand for?

a)

Do Not Assist

b)

deoxyribbon nucleic acid

c)

deoxyribonucleic acid

d)

dexyribonucleic acid

2.

What is a niche?

a)

the habitat of an organism

b)

how many organisms of that kind live in the area

c)

an organism's role in the ecosystem

d)

a rash you need to scratch

3.

An advantage of asexual reproduction:

a)

the population can grow quickly in a short amount of time

b)

offspring can adapt to their environments faster

c)

long term bonds are formed between the parents and offspring

d)

there is more variety in the offspring

4.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
5.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
6.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
7.

Identify the statement that is most accurate for the relationship between evolution and natural selection.

a)

Evolution is the mechanism for natural selection

b)

Natural selection is the mechanism for evolution

c)

Evolution results in natural selection

d)

Natural selection results in evolution

8.
In natural selection, the selective agent is the
a)
humans
b)
mutations
c)
breeders
d)
environment
9.

Natural selection could not occur without

a)

geographic isolation

b)

variation in the population

c)

stable environments

d)

competition for unlimited resources

10.
A __________ includes all living and non-living things in an environment. 
a)
population
b)
niche
c)
abitotic
d)
ecosystem
11.

What is a niche?

a)

the habitat of an organism

b)

how many organisms of that kind live in the area

c)

an organism's role in the ecosystem

d)

a rash you need to scratch

12.

The process shown is:

a)

asexual reproduction

b)

sexual reproduction

13.

Sperm and egg cells have _____ number of chromosomes as other body cells.

a)

the same

b)

twice the

c)

half the

14.

The process shown is called:

a)

meiosis

b)

binary fission

c)

budding

d)

spore production

15.

The process shown is called:

a)

meiosis

b)

binary fission

c)

budding

d)

spore production

16.

The process shown is called:

a)

meiosis

b)

mitosis

c)

budding

d)

spore production

17.

Which trait is influenced by genetics only?

a)

scars

b)

mass

c)

blood type

d)

skin colour

18.

An organism that can eat many types of food and live in many places is called a:

a)

specialist

b)

generalist

19.

An organisms that lives in the striped area would have a ______ niche.

a)

broad

b)

narrow

20.

The organism that can better survive small changes in the environment:

a)

specialist

b)

generalist

21.

Organisms that live in a broad niche are called:

a)

generalists

b)

specialists

22.

Organisms that live in a narrow niche are called:

a)

generalists

b)

specialists

23.

Which country would have the highest biodiversity?

a)

Canada

b)

United States

c)

Columbia

d)

Russia

24.

Both parents are:

a)

homozygous recessive

b)

heterozygous

c)

heterozygous dominant

25.

What are the chances that a child will have the recessive trait of blonde hair?

a)

75%

b)

25%

c)

0%

d)

100%

26.

What are the chances that a child will have the recessive trait of blonde hair?

a)

75%

b)

25%

c)

0%

d)

100%

27.

What part of a cell has the genetic information?

a)

cell membrane

b)

chloroplast

c)

cytoplasm

d)

chromosome

28.

Problems with _______ can lead to offspring with the wrong number of chromosomes.

a)

meiosis

b)

mitosis

c)

cell division

29.

Height is an example of:

a)

discrete variation

b)

Continuous variation

30.

Handspan is an example of:

a)

discrete variation

b)

Continuous variation

31.

Blood type is an example of:

a)

discrete variation

b)

Continuous variation

32.

A baby panda was born in a Belgian zoo. This is an example of:

a)

establishing protected areas

b)

captive breeding programs

c)

international import/export treaties

33.

A wildlife refuge has been set up in Peru. This is an example of:

a)

establishing protected areas

b)

captive breeding programs

c)

international import/export treaties

34.

This form of reproduction requires 2 parents:

a)

sexual reproduction

b)

asexual reproduction

c)

both sexual and asexual reproduction

35.

A recessive trait is seen in the offspring when:

a)

both parents pass on the trait

b)

one parent passes on the trait

36.

Which is probably an example of artificial selection?

a)

Broad leaves on maples allow them to collect more sunlight.

b)

Durum wheat is high in protein, making it useful for pasta.

c)

The beak of the golden eagle is sharp for tearing meat.

d)

Wolves have ridges on their skull for strong jaw muscles.

37.
What is species diversity?
a)
the variety of different organisms in an environment
b)
the number of individuals in a population
c)
the number of habitats on a continent
d)
how much food is available in a habitat
38.
_____________ refers to all of the living species in the world.
a)
genetic diversity
b)
species diversity
c)
biological diversity
d)
environmental diversity
39.
A place in an ecosystem where a population lives is called a _________.
a)
community
b)
habitat
c)
evolution
d)
limiting factor
40.
The theory of evolution says that living things ___________.
a)
grow and develop
b)
change over time
c)
stay the same throughout history
d)
change very quickly
41.
What causes living things to change over time?
a)
cloning
b)
fossil evidence
c)
natural disasters
d)
changes in the environment
42.
Living things who posses favorable traits will most likely _____________.
a)
die young
b)
go extinct
c)
pass those traits to offspring
d)
remove the trait from the gene pool
43.
Populations with low genetic diversity are more likely to ______________.
a)
go extinct
b)
adapt to their environment
c)
posses a wide variety in traits
d)
have an advantage over living things with high genetic diversity
44.
 characteristic or trait that helps an organism survive in its environment
a)
skills
b)
speciation
c)
natural instinct
d)
adaptation
45.
Charles Darwin noticed that birds of the Galapagos Islands were very similar in size and shape but their beaks were very different. What is the explanation for birds having different beaks? 
a)
gathering food
b)
building nest
c)
fighting
d)
scaring predators
46.
What is a species?
a)
A group of organisms that can mate with each other and produce fertile offspring. 
b)
A group of organisms that genetically are very different from each other. 
c)
A group of organisms that can mate and produce offspring even if those offspring are infertile.
d)
Indivual organisms that live in the same environment. 
47.
A tapeworm and a cat have this type of relationship.
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
48.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
49.
Red-billed oxpeckers are birds that often feed on parasites that infest impala.  This is an example of _______.
a)
commensalism
b)
mutualism
c)
neutralism
d)
competition
50.

Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.

a)

Predation

b)

Parasitism

c)

Commensalism

d)

Mutualism

51.
____species coexist by using only part of the available resources
a)
Resource Partitioning
b)
Resource competition
c)
Mutual competition
d)
Mutaulization
52.
Two different types of finches feeding on seeds is an example of 
a)
commensalism
b)
competition
c)
predator prey
d)
mutualism
53.

After cell division by meiosis, the number of chromosomes each egg or sperm has is:

a)

1/4 the original

b)

1/2 the orginal

c)

ten times the original

d)

twice the original

54.
What is artificial selection?
a)
a nonnative organism that spreads widely in a community
b)
the process of selection conducted under human direction
c)
a heritable trait that increases the likelihood of an individual's survival and reproduction
d)
how reproductively successful an organism is in its environment
55.
A panda is considered a ________________________ because of its restricted range of living.
a)
specialist
b)
generalist
56.

Which of the following are heritable characteristics?

a)

colour hair

b)

liking apples

57.
Bacteria reproduce this way.
a)
budding
b)
fragmentation
c)
binary fission
d)
vegetative propagation
58.
Which type(s) of reproduction involves only ONE parent?
a)
asexual 
b)
sexual
c)
both
59.
Which type(s) of reproduction involves TWO parents?
a)
asexual 
b)
sexual
c)
both
60.
Which type(s) of reproduction involves genetically unique offspring - a variety?
a)
asexual
b)
sexual
c)
both
61.

Which of the following is NOT an example of natural selection?

a)

People selectively breeding hamsters.

b)

Insect populations developing resistance to certain pesticides.

c)

Bacteria becoming resistant to antibiotics.

d)

Male birds of certain species developing colorful feathers to attract female mates.

62.

Which term refers to the process by which individuals who are better suited to the environment survive and reproduce therefore passing down their genes to their offspring?

a)

Inheritance of Acquired Characteristics

b)

Variation

c)

Adaptation

d)

Natural Selection

63.

Which species’ DNA is most similar to the DNA of the toothed whale?

a)

Hippopotamus

b)

Baleen Whale

c)

Grazing Mammals

d)

Camels

64.
The environment around Manchester, England, changed during the Industrial Revolution.  How did this change affect peppered moths living in the area?
a)
Natural selection favored moths with dark wings because predators could not see them on the soot-colored trees.
b)
Natural selection favored moths with white wings that were easy for predators to see.
c)
Natural selection favored moths with white wings because predators could not see them on the soot-colored trees.
d)
Natural selection caused moths with white wings to become extinct.
65.
When an organism completely dies out, it is called.....
a)
Adaption
b)
Extinction
c)
Fossilization
d)
Mutation
66.

What is this an example of?

a)

diversity of species

b)

variation

c)

vestigial structures

d)

mitosis and meiosis

67.

A well-tested concept that explains a wide range of observations is called a(an):

a)

hypothesis

b)

fact

c)

law

d)

scientific theory

68.

The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these will most likely increase? Choose the best answer.

a)

Environmental fitness

b)

Reproductive mutations

c)

Natural selection

d)

Genetic variation

69.

A graph regarding the effect of agricultural bioengineering on insect pests is shown below. How has natural selection affected species of insect pests?

a)

Natural selection has not affected the number of species that are resistant to pesticides

b)

Natural selection has rapidly increased the number of species that are resistant to pesticides

c)

Natural selection has only affected the number of species that are resistant to pesticides

70.

The table shows the survival rate of two types of beetles in the same environment over a period of three years.


Which statement about the beetles in this environment is best supported by the data?

a)

Brown beetles have a shorter life cycle than green beetles have

b)

Green beetles are more fit for their environment than brown beetles

c)

brown beetles undergo more unfavorable mutations than green beetles

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