wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

TCA 7-ecosystems review

Total questions: 113

Worksheet time: 3hrs 32mins

Name
Class
Date
1.
Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales. 
a)
parasitism
b)
commensalism
c)
mutualism
2.
Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit. 
a)
parasitism
b)
commensalism
c)
mutualism
3.
Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 
a)
parasitism
b)
commensalism
c)
mutualism
4.
 The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.
a)
parasitism
b)
commensalism
c)
mutualism
5.

Which of the following shows the symbiotic relationship between the Rodent and the Bird?

a)

Mutualism

b)

Commensalism

c)

Competition

6.

Hermit Crabs live in shells made and then abandoned by snails.

a)

Commensalism

b)

Parasitism

c)

Competition

7.
Two male Giraffes are fighting over the last green leaf of a tree that is dying.  
a)
Competition
b)
Mutualsim
c)
Predation
d)
Commensalism
8.
a relationship that occurs when two or more organims of the same species need the same resource at the same time
a)
competition
b)
symbiosis
c)
predation
9.
In a parasitic relationship, one organism is ___________ and one organism is benefiting. 
a)
helped
b)
harmed
c)
not effected
d)
happy
10.
In a mutual relationship, both organisms are ________________. 
a)
hurt
b)
not effected
c)
harmed
d)
benefiting 
11.
Commensalism is where one organism is benefiting and the other organism is _____________________. 
a)
not effected
b)
helped
c)
harmed
d)
hurt
12.
1.  A bee and a flower work together to benefit each other. This is an example of _________________. The bee helps the flower by pollinating it and the flower helps the bee by providing it with nectar. 
a)
commensal relationship 
b)
parasitic relationship 
c)
mutual relationship 
13.
A tick is a parasite to a horse. Which statement best describes the relationship between the tick and the horse? 
a)
a.  The tick helps the horse get food. 
b)
a.  The tick harms the horse by feeding on its blood. 
c)
a.  The horse harms the tick by feeding on its blood. 
d)
The tick does not affect the horse. 
14.
 Mrs. Bush’s cat has fleas. A flea is a parasite that gets its energy from Dante’s blood. How are the flea and the cat affected in this relationship? 
a)
Both organisms are helped.
b)
Both organisms are not affected.
c)
One organism is helped and one organism is not effected.
d)
One organism is helped and another organism is harmed. 
15.
Which is an example of commensalism?
a)
Two different kinds of organisms harming each other. 
b)
Two different kinds of organisms are neither helping nor harming each other. 
c)
One kind of organism is being helped, but the other one is not harmed or helped. 
d)
One kind of organism is being helped, but the other is harmed. 
16.
Which interaction benefits both organisms?
a)
A flea living on a dog
b)
A bee pollinating a flower
c)
A tapeworm living inside an animal
d)
A mosquito biting a person
17.
Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which best describes the outcome of this relationship?
a)
The dog and tapeworm both become ill. 
b)
The dog becomes ill, and the tapeworm benefits. 
c)
The tapeworm and dog helpe ach other survive. 
d)
The tapeworm helps the dog survive. 
18.
A mite lives in the base of the eyelashes of people who use mascara. It feeds on the mascara; it does not seem to harm people. What type of symbiotic relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
predation
19.
A coyote captures, kills, and eats a rabbit. What type of symbiotic relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
predation
20.

Lactobacilli are a type of bacteria that live in our lungs and destroy many of the microorganisms that enter our respiratory system. They are highly adapted to living in our lungs and can't survive in many other habitats.

a)

mutualism

b)

commensalism

c)

parasitism

21.

In the jungles of South America lives a thorn tree call an acacia. A species of ant eats secretions of the acacia, drinks its sap, and raises its young in the hollow thorns. The ants also keep competing vines from growing near the acacia tree and they help repel any insects that would damage the acacia tree.

a)

mutualism

b)

commensalism

c)

parasitism

22.

Lichens are close associations of fungi and algae. The fungi hold the water supply and the algae perform photosynthesis to manufacture carbohydrates for both organisms.

a)

mutualism

b)

commensalism

c)

parasitism

23.
Which of he following interactions demonstrates a PARASITIC relationship?
a)
A mosquito sucking blood from a warm blooded animal.
b)
A group of baby otters floating together to help warm each other in the cold waters.
c)
Many fish swimming together to protect each other from predators.
d)
Two hyenas fighting over a female to mate with.
24.

A bee and a flower work together to benefit each other. This is an example of a ______. The bee helps the flower by pollinating it and the flower helps the bee by providing it with nectar.

a)

commensalistic relationship

b)

parasitic relationship

c)

mutualistic relationship

25.
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
26.
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
27.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

28.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

29.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

30.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

31.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

32.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

33.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

34.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

35.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

36.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

37.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

38.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

39.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

40.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

41.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

42.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

43.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

44.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

45.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

46.

Is this picture abiotic or biotic?

a)

Abiotic

b)

Biotic

47.

Plants require moisture, oxygen, carbon dioxide, light, and minerals to survive. These are examples of which of the following?

a)

Biotic factors

b)

Abiotic factors

c)

All of the above

d)

None of the above

48.

Which abiotic factors would you expect to influence the growth of trees in the mountains?

a)

Predator and prey populations

b)

Types of trees and plants

c)

Rainfall and location on the mountain

49.

Which of the following contains only biotic factors?

a)

Temperature and rainfall

b)

Frog and weather

c)

Ant and snail

50.

John takes the subway to work every morning. He enjoys drinking his coffee and talking to people that sit near him. The other people on the subway are an example of what type of factor?

a)

Abiotic

b)

Biotic

51.

Termites are tiny insects that can cause severe damage to homes and other structures that consist of wood. Termites are an example of what type of factor.

a)

Biotic

b)

Abiotic

52.

The Sun is the source of all energy within an ecosystem. Plants depend on light from the sun in order to perform the process of photosynthesis. Sunlight is an example of what type of factor?

a)

Biotic

b)

Abiotic

53.

A black mamba is a highly venomous snake that can reach lengths of 14 feet. They are also able to slither at speeds of 12 miles per hour (mph). A black mamba is an example of what type of factor?

a)

Biotic

b)

Abiotic

54.

Water is a compound that consists of 2 hydrogen atoms and 1 oxygen atom. Up to 60% of an adult human is made up of water. Water is an example of what type of factor?

a)

Biotic

b)

Abiotic

55.

Air is a mixture of colorless gases. The air that makes up the Earth's atmosphere consists primarily of nitrogen and oxygen. Air is an example of which type of factor?

a)

Biotic

b)

Abiotic

56.

Brandon and his dad cut a tree that fell in a storm into smaller sections. Then they split the wood to use for firewood. Firewood is an example of which type of factor.

a)

Biotic

b)

Abiotic

57.

An arctic blast pushed its way through several of the Northern state in the United State. The temperatures dropped below freezing for several days. Temperature is an example of which type of factor?

a)

Biotic

b)

Abiotic

58.

An angler fish has a fleshy growth on its head that gives off light. This part acts as a lure to help the angler fish catch its prey. An anglerfish is an example of which type of factor?

a)

Biotic

b)

Abiotic

59.

Pyrite is a mineral that is also referred to as "fools gold." It is commonly found in many types of rocks such as limestone. Pyrite is an example of which type of factor?

a)

Biotic

b)

Abiotic

60.

Precipitation is water in liquid or solid form that falls from Earth's atmosphere to the ground due to gravity. Rain, snow, sleet and hail are common forms of precipitation. Precipitation is an example of which type of factor?

a)

Biotic

b)

Abiotic

61.

Great Danes are large dogs that were originally referred to as boar hounds because they were bred to hunt boars. They are one of the tallest dog breeds and can weigh up to 200 pounds. Great Danes are an example o which type of factor?

a)

Biotic

b)

Abiotic

62.

A certain plant needs moisture, carbon dioxide, oxygen, light, and minerals to survive. This scenario shows that this particular living organism depends

a)

Biotic and Abiotc Factors

b)

Biotic Factors

c)

Abiotic Factors

d)

None of the Above

63.

What is the difference between the biotic

and abiotic factors?

a)

Biotic are the living things and abiotic are nonliving things.

b)

Biotic are the nonliving things and abiotic are living things.

64.
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
65.

Living and nonliving things interacting in an environment is called:

a)

Organism

b)

Producer

c)

Consumer

d)

Ecosystem

66.
A place where plants and animals live and grow is called a ____________. It provides, food, water, shelter, and air.
a)
shelter
b)
tree
c)
habitat
d)
organism
67.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
68.
What are the abiotic factors in this image? 
a)
water, sunlight, dirt, air
b)
birds and plants
c)
water, plants, and birds 
69.
What are the biotic factors in this image?
a)
sunlight, elephants, and grasses
b)
sunlight, water,  and air
c)
elephants, plants, trees 
70.

Lizards and cacti are biotic factors in a desert ecosystem that would rely on which abiotic factors?

a)

insects and sun

b)

water and insects

c)

snakes and temperature

d)

water and soil

71.

Which is an example of a biotic factor in the environment?

a)

The climate in the region

b)

Carnivores that consume other animals

c)

Amount of helium gas in the air

d)

Flow of water in a river

72.

_____: the variety of life in the world, or in a particular habitat or ecosystem.

a)

Biodiversity

b)

Carrying Capacity

c)

Limiting Factor

73.

______: The largest number of individuals that an environment can support.

a)

Carrying Capacity

b)

Biodiversity

c)

Limiting Factors

74.

______: Resources that restrict the size of a population.

a)

Limiting Factors

b)

Biodiversity

c)

Carrying Capacity

75.

______: Nonliving things in an ecosystem (air, soil, water, sunlight)

a)

Abiotic Factors

b)

Biotic Factors

76.

______: Living factors in an ecosystem (plants, animals, bacteria, fungi, etc.)

a)

Biotic Factors

b)

Abiotic Factors

77.

Which of the following is a likely result of low biodiversity?

a)

species extinction

b)

rapid population growth

78.

What would happen if a species reached its carrying capacity?

a)

the species could become endangered or possibly extinct

b)

the birth rate and death rate of the species would be equal

c)

the species' population would double in a short period of time

79.

Which of the following is *NOT* a limiting factor in an ecosystem?

a)

plenty of available food and water

b)

predators in the ecosystem

c)

harsh weather conditions

d)

competition with other members of the species

80.

Which of the following is a BIOTIC factor in an ecosystem?

a)

Trees

b)

Air

c)

Water

d)

Soil

81.

Which of the following is an ABIOTIC factor in an ecosystem?

a)

Worms

b)

Fruit

c)

Soil

d)

Fish

82.

The _______ includes all living organisms on Earth along with the spheres they interact with (lithosphere, hydrosphere, and atmosphere).

a)

Biosphere

b)

Biome

c)

Community

d)

Ecosystem

83.

A _____ is a large ecological area with similar climatic conditions, and it can have multiple ecosystems within it.

a)

Biome

b)

Biosphere

c)

Ecosystem

d)

Community

84.

_______: a collection of all the organisms living in a particular place together with their abiotic components, such as water and air.

a)

Biosphere

b)

Biome

c)

Ecosystem

d)

Community

85.

A _____ is the populations of two or more species within the same geographical area and time period.

a)

Biome

b)

Ecosystem

c)

Community

d)

Population

86.

A _____ is a group of individuals within the same species, within the same area, and that are capable of reproducing with one another.

a)

Population

b)

Community

c)

Ecosystem

d)

Biome

87.
What are the ecological levels of organization from smallest to the largest?
a)
organism, population, community, ecosystem, biome, biosphere
b)
organism, community, population, ecosystem, biome, biosphere
c)
organism, population, community, biome, ecosystem, ecosphere.
d)
organism, community, population, biome, ecosystem, ecosphere
88.
Multiple organisms of the same species describes a
a)
organism
b)
population
c)
community
d)
ecosystem
89.

Which of the following levels of organization is the most complex?

a)

organism

b)

population

c)

community

d)

ecosystem

90.

A group of the same organisms living together in the same place at the same time is:

a)

An organism

b)

A population

c)

A community

d)

A biome

91.

What are groups of different populations living togther in the same place at the same time called?

a)

An organism

b)

A population

c)

A community

d)

A biosphere

92.
An organism that is killed and eaten by another organism
a)
Predator
b)
Prey
c)
Competition
d)
Adaptation
93.
What role does the mouse play?
a)
Predator
b)
Prey
94.

Animals that eat other animals are called ____________.

a)

Prey

b)

Predators

95.

Predator population lags behind prey population because......

a)

Increase in predators leads to decrease in prey

b)

Increase in predators leads to increase in prey

c)

Increase in predators leads to decrease in producers

d)

Increase in producers leads to increase in prey

96.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
97.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

98.

What is the definition of Symbiosis?

4 lines
99.

In mutualism, both organisms (a)  

100.

In parasitism, one organism benefits while the other gets (a)  

101.

In commensalism, one organism benefits while the other one is (a)  

102.

Definition of Prey

a)

animal that is hunted for as food

b)

animal that hunts organisms for food

103.

Definition of Predator

a)

animal that is hunted for as food

b)

animal that hunts other animals for food

104.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

105.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

106.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

107.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

108.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

109.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

110.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

111.

Select the best symbiotic relationship that these two organisms would express

a)

mutualism

b)

commensalism

c)

parasitism

112.

As prey population goes up... predator populations go (a)  

113.

As prey population numbers go down, which means a decrease in food for predators... predator population numbers go...

(a)  

Similar Resources on Wayground

7th Grade Review

115 questions

7th Grade Review

quiz

Worksheet

•

7th Grade

Earth Science Midterm Exam 2019

111 questions

Earth Science Midterm Exam 2019

quiz

Worksheet

•

6th Grade

Full Weather Test Review

109 questions

Full Weather Test Review

quiz

Worksheet

•

8th Grade

Physical and Chemical Changes Review

109 questions

Physical and Chemical Changes Review

quiz

Worksheet

•

8th Grade

Cambridge Science Unit 6 Stage 7

111 questions

Cambridge Science Unit 6 Stage 7

quiz

Worksheet

•

6th Grade

🚀11.14

110 questions

🚀11.14

quiz

Worksheet

•

7th Grade

Science Q4 Review

110 questions

Science Q4 Review

quiz

Worksheet

•

8th Grade

RFMS Science: CSA 2 Review 2024/2025

109 questions

RFMS Science: CSA 2 Review 2024/2025

quiz

Worksheet

•

6th Grade