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Symbiosis and Interactions

Total questions: 35

Worksheet time: 28mins

Name
Class
Date
1.
A coyote captures, kills, and eats a rabbit. What type of symbiotic relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
predation
2.
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
3.
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. 
4.
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. 
5.
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. 
6.
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 
7.
Commensalism is where one organism is benefiting and the other organism is _____________________. 
a)
not effected
b)
helped
c)
harmed
d)
hurt
8.
In a mutual relationship, both organisms are ________________. 
a)
hurt
b)
not effected
c)
harmed
d)
benefiting 
9.
In a parasitic relationship, one organism is ___________ and one organism is benefiting. 
a)
helped
b)
harmed
c)
not effected
d)
happy
10.
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
11.
Two male Giraffes are fighting over the last green leaf of a tree that is dying.  
a)
Competition
b)
Mutualsim
c)
Predation
d)
Commensalism
12.

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

a)

Commensalism

b)

Parasitism

c)

Competition

13.

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

a)

Mutualism

b)

Commensalism

c)

Competition

14.
Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 
a)
parasitism
b)
commensalism
c)
mutualism
15.
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
16.
Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales. 
a)
parasitism
b)
commensalism
c)
mutualism
17.
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.
18.

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

19.

All of the following are examples of living things interacting with each other EXCEPT —

a)

birds preying on insects living in the grass

b)

squirrels spreading the seeds of trees by burying them

c)

frogs sleeping in the mud at the bottom of the pond

d)

fish eating plants and other smaller fish

20.

Another word for a living thing is a:

a)

animal

b)

organism

c)

plant

d)

community

21.
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
22.
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
23.
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
24.
A group of one type of organisms is called a(n) ___________.
a)
Organism
b)
Population
c)
Community
d)
Ecosystem
25.

Many species of organisms that live in an area is called a(n) ____________.

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

26.

Both living and nonliving things interacting within a defined area makes up a(n) _____________.

a)

Organism

b)

Population

c)

Community

d)

Ecosystem

27.
Which of the following is not an example of a limiting factor?
a)
Happiness
b)
Space
c)
Predators
d)
Food
28.

An organism that hunts other animals is a _______.

a)

Predator

b)

Prey

29.

An organism that gets hunted is a _______.

a)

Predator

b)

Prey

30.

The snake is the _______.

a)

Predator

b)

Prey

31.

The bird is the _______.

a)

Predator

b)

Prey

32.

The rabbit is the _______.

a)

Predator

b)

Prey

33.

The shark is the _______.

a)

Predator

b)

Prey

34.

The seal is the _______.

a)

Predator

b)

Prey

35.

Animals that eat other animals are called ____________.

a)

Prey

b)

Predators

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