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Second Semester Review

Total questions: 85

Worksheet time: 1hrs 9mins

Name
Class
Date
1.
A controlled experiment is one where
a)
you change only one variable.
b)
you change many variables.
2.
The independent variable is the
a)
one you measure.
b)
one you change.
3.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the independent variable.
a)
distance traveled by the ball
b)
height of the ramp
c)
mass of the ball
d)
weight of the ball
4.

The dependent variable is the one

a)

you measure as it responds.

b)

you change between the groups.

5.
Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the dependent variable.
a)
height of the ramp
b)
 distance traveled by the ball
c)
mass of the ball
d)
weight of the ball
6.
The______variable goes on the x-axis
a)
Independent 
b)
Irregular
c)
Dependent
7.

Which variable goes on the y-axis?

a)

Independent

b)

Dependent

c)

Controlled variables

8.
What is the dependent variable?
a)
Grade
b)
Number of Students
9.
What is the independent variable?
a)
Subject
b)
Students
10.
Bar graphs are used to best represent what type of data?
a)
Change over Time
b)
Trends over Time
c)
Categories of Information(Comparisons)
d)
Percentages
11.

Line graphs are best used for what type of data?

a)

comparing results for categories

b)

comparing percentages

c)

comparing how numbers change with numbers

12.
What type of graph should be used to show this data?
a)
bar
b)
pie
c)
line
13.
What type of graph would should be used to show this data?
a)
bar
b)
pie
c)
line
14.
What is photosynthesis?
a)
Water loss by a plant.
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
15.
In a chemical equation, which is true? 
a)
reactants--> products 
b)
products--> reactants
16.
Plants need ________ as a reactant for photosynthesis.
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
17.
Carbon dioxide enters plant leaves through the __________.
a)
stomata
b)
chloroplasts
c)
xylem
d)
cuticle
18.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
19.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + glucose
b)
CO2 + glucose + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + glucose
d)
CO2 + O2 + H2O --> Light+ glucose
20.
Which statement about photosynthesis is correct?
a)
Plants get the energy they need for photosynthesis from water.
b)
Plants get the energy they need for photosynthesis from soil.
c)
Plants get the energy they need for photosynthesis from sunlight.
d)
Plants do not require energy to perform photosynthesis.
21.
Why do we eat food?
a)
to provide energy/fuel
b)
to eliminate waste products
c)
to prevent diseases
d)
to kill pathogens
22.

Cellular Respiration's goal is to

a)

make water

b)

make ATP (energy)

c)

make glucose

d)

make oxygen

23.
Which of the following structure is where cellular respiration occurs in the cell?
a)
nucleus
b)
cytoplasm
c)
mitochondria
d)
vacuoles
24.
What are the reactants of cellular respiration?
a)
energy and water
b)
glucose and oxygen
c)
carbon dioxide and oxygen
d)
water and glucose
25.

What are the products of cellular respiration?

a)

energy, carbon dioxide and water

b)

carbon dioxide and energy

c)

water and oxygen

d)

water and energy

26.

True or False:

Both plant cells and animal cells depend on cellular respiration to release energy stored in their food.

a)

True

b)

False

27.
What happens to your breathing rate when you exercise?
a)
It increases
b)
It decreases
c)
It stays the same
28.

Which is NOT a use for the ATP created by cellular respiration?

a)

movement (muscles)

b)

nerve impulses (signals)

c)

growth and building new molecules

d)

body heat

e)

photosynthesis

29.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis used carbon dioxide, while cellular respiration produces carbon dioxide.
30.
In what way is photosynthesis and respiration related to each other?
a)
The reactants of photosynthesis are the reactants of respiration.
b)
The products of photosynthesis are the reactants of respiration.
c)
The products of photosynthesis are the products of respiration.
31.

Which nutrient released in digestion is the main source of fuel (energy) for the body?

a)

sugar (glucose)

b)

fatty acids

c)

amino acids

d)

big carbohydrates

32.

Plants undergo cellular respiration.

a)

True

b)

False.

33.

A consumer that eats only producers.

a)

Primary Consumer

b)

Secondary Consumer

c)

Carnivore

d)

Omnivore

34.

An organism that makes its own food.

a)

Autotroph

b)

Heterotroph

c)

Herbovore

d)

Carnivore

35.

This shows the total energy available at each trophic level of an ecosystem.

a)

Energy Pyramid

b)

Food Chain

c)

Food Web

36.

This organism is always first on a food web.

a)

Plants

b)

The Sun

c)

Apex Predator

d)

Primary Consumer

37.

The energy organisms need to live and grow first enters the ecosystem when-

a)

decomposers break down dead organism

b)

plants take in light energy from the sun

c)

primary consumers eat plants for food

d)

secondary consumers eat primary consumers

38.

The feeding level at the bottom of an energy pyramid contains the

a)

Producers

b)

Primary Consumers

c)

Herbivores

d)

Apex Predators

39.

The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following?

a)

migration

b)

the availability of water

c)

the recycling of nutrients

d)

the distribution of organisms

40.

What level consumer is the frog

a)

Primary Consumer

b)

Secondary Consumer

c)

Tertiary Consumer

d)

Apex Predator

41.

What level consumer is the snake?

a)

Primary Consumer

b)

Secondary Consumer

c)

Tertiary

d)

Apex Predator

42.

Consumers that eat only plants.

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Omnivores

43.

Consumers that only eat other animals (meat).

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Omnivores

44.

A consumer that eats both animals and producers.

a)

Carnnivores

b)

Omnivores

c)

Herbivores

45.

The path of energy transfer from one organism to another in an ecosystem.

a)

Food Chain

b)

Food Web

c)

Energy Pyramid

46.

Overlapping food chains with different pathways for the flow of food energy in an ecosystem

a)

Food Chain

b)

Food Web

c)

Food Pyramid

d)

Energy Pyramid

47.

Select all the biotic factors from the list.

a)

Water

b)

Turtle

c)

Log Turtles are Sitting On

d)

Grasses

e)

Sun

48.

Select all the abiotic factors from the list.

a)

Water

b)

Turtles

c)

Log Turtles are Sitting On

d)

Sun

e)

Grasses

49.
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.
50.

How much energy is available to be passed on to the next level in a food web?

a)

100%

b)

10%

c)

50%

d)

75%

51.
Which of the following symbiotic relationships is considered parasitic?
a)
Ticks feeding on a dog
b)
Bees transporting pollen from flowers
c)
Pilotfish swimming under sharks
d)
Birds eating the insects fromo the back of hippo
52.
Maria and her classmates are observing animals at the pond. They notice that wood storks and ibisies both feed on fish. Which of these describes the relationship between these two birds.
a)
Parasitism
b)
Competition
c)
Predator and prey
d)
Producer and consumer
53.
Which of these describes a mutually beneficial relationship between two organisms?
a)
A dog with worms in its intestine
b)
A turtle and a snail that both eat grass live in a river
c)
A honeybee pollinating a plant and receiving nectar for food
d)
A small fish attached to a shark, eating tiny pieces of the shark's food as it floats
54.
Which pair of organisms listed below are competitors for the same natural resources?
a)
Ticks and dogs
b)
Lions and leopards
c)
Honeybees and flowers
d)
Salmon and brown bears
55.
Which of the examples below can BEST be described as mutualism between animals?
a)
A tapeworm lives in the intestine of a bird and consumes the food that the bird has eaten
b)
Mountain lions and wolves fight each other for the same deer
c)
A bird eats parasites off a rhinoceros while the rhinoceros provides protection to the bird
d)
Rats live in the garbage dump of a town and rarely interact with people
56.
An organism that is killed and eaten by another organism
a)
Predator
b)
Prey
c)
Parasite
d)
Host
57.
Occurs when 2 or more organism use the same resource
a)
Competition
b)
Mutualism
c)
Commensalism
d)
Parasitism
58.
Relationship where one organism benefits and the other is neither harmed nor helped
a)
Commensalism
b)
Parasitism
c)
Mutualism
d)
Competition
59.
An organism where one organism benefits and another is harmed
a)
Commensalism
b)
Parasitism
c)
Mutualism
d)
Competition
60.
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
61.
What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.  
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
62.
Which symbols best describe parasitism?
a)
+,+
b)
+,-
c)
+,0
d)
-,0
63.
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
64.

Clownfish- home & protection

Sea anemone- Clownfish lures prey into the sea anemone and the sea anemone gets food.

a)

Parasitism

b)

Mutualism

c)

Commensalism

65.
Living parts of an ecosystem are called
a)
biotic factors
b)
abiotic factors
c)
crazy critters
d)
animals and plants
66.
Nonliving parts of an ecosystem are called
a)
abiotic factors
b)
biotic factors
c)
rocks and dirt
d)
funiture
67.
What is another word for an animal's home?
a)
Habitat
b)
Niche
c)
Population
d)
Organism
68.
What is the role an organism plays in its ecosystem?
a)
Habitat
b)
Niche
c)
Organism
d)
Population
69.

Water would be an example of:

a)

Biotic

b)

abiotic

70.

An abiotic factor that limits a population size would be?

a)

Food

b)

predators

c)

space

d)

disease

71.

The factors that limit the size of a population are:

a)

Ecos factor

b)

carrying capacity

c)

limiting factor

d)

abiotic number

72.
Which biome, because of its climate, has the largest number of species of plants and animals?
a)
tundra
b)
desert
c)
rain forest
d)
pine forest
73.
How do lichens contribute to primary succession?
a)
Lichens decompose organic matter from animals and plants
b)
Lichens begin to break down rock to form soil
c)
Lichens are nitrogen fixing bacteria
74.
the first organisms that appear in an ecological community
a)
ecological succession 
b)
primary succession 
c)

primary species

d)

pioneer species

75.
In a particular habitat, owls eat mice and mice eat grass. If the owl population suddenly grows, then most likely
a)
the number of mice will decrease and the amount of grass will not change.
b)
the number of mice will increase and the amount of grass will increase.
c)
the number of mice will increase and the amount of grass will not change.
d)
the number of mice will decrease and the amount of grass will increase.
76.
Which habitat exhibits the greatest biodiversity?
a)
A habitat with 15 different species with about 300 individuals each
b)
A habitat with 10 different species with about 75 individuals each
c)
A habitat with 4 different species with about 150 individuals each
d)
A habitat with only one species with about 2000 individual
77.
What is the MOST likely consequence if a fungal disease killed the grass in this WOODLAND ECOSYSTEM?
a)
Only the rabbits would be affected, because they are the ones who eat the grass.
b)
The blueberry bush would begin to grow wild, because it would have more space to grow.
c)
Nothing would happen; the animals would eat something else.
d)
The ecosystem would most likely be disrupted, because the grass is one of its primary producers
78.
Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?
a)
No, sharks are not important.
b)
No, sharks will only affect the seal populations.
c)
Yes, it will disrupt the entire food chain in the ocean.
d)
Yes, but only a little.
79.
How can humans best help an endangered species avoid extinction?
a)
they can feed the animals
b)
they can put the animals in a zoo
c)
they can protect the animal’s habitat
d)
they can take the animal to new habitats
80.
Why is biodiversity so important?
a)
Because all species depend on each other to survive, so if one becomes extinct another species that relies on it could go extinct as well
b)
Because it’s better to have only one variation of each species.
c)
Because it better to only have a few species on Earth.
d)
Honestly, I have no idea what biodiversity is!
81.

Invasive species alter the ecosystem by _____ in number quickly. This leads to _____ food for the native species.

a)

increasing, less

b)

increasing, more

c)

decreasing, less

d)

decreasing, more

82.

TRUE or FALSE? Invasive species grow quickly due to the lack of predators. This leads to a decline or extinction of the native population.

a)

True

b)

False

83.

A species indigenous to a certain region or ecosystem naturally is a ---

a)

Native Species.

b)

Accidental Species.

c)

Introduced Species.

d)

Invasive Species.

84.

TRUE or FALSE? Invasive species can be introduced to an ecosystem accidentally.

a)

True

b)

False

85.

TRUE or FALSE? Invasive species can be introduced to an ecosystem intentionally.

a)

True

b)

False

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