AnswersEnvironmental Science - SC2028Skills Lesson: Contrasting Observations or Objects

Organismal Relationships Answers

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1
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Many dogs bark when unknown individuals approach their house. What type of interaction is this?

A
Mutualism
B
Predation
C
Symbiosis
D
Competition
2
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The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict about allowing nonnative species onto the islands?

A
It is so strict because a foreign species could mate with a native species and create a new species.
B
It is so strict because a foreign species could become a problem for tourism.
C
It is so strict because a foreign species could compete with a native species and drive it to extinction.
D
It is so strict because a foreign species may not be able to survive in a new environment.
3

The Great Burdock plant’s seeds have spines on them that attach to the fur of animals that brush against it. The seed then travels with the animal until it eventually falls off, which spreads the plant’s seeds farther than the plant could have done. What type of symbiotic relationship is this?

A
Mutualism
B
Commensalism
C
Parasitism
D
Competition
4

Which of the following scenarios is representative of mutualism?

A
Barnacles living on whales
B
Bees pollinating flowers
C
Birds feeding on insects stirred up by grazing animals
D
Mosses living on tree trunks
5

What are the three types of symbiosis?

A
predation, mutualism, and parasitism
B
mutualism, commensalism, and parasitism
C
competition, predation, and commensalism
D
parasitism, predation, and competition
6

Which of the following is not a possible long-term consequence of two organisms occupying the same niche?

A
Local extinction
B
Adaptation
C
Migration
D
Coexistence
7

Interactions between organisms and their environment impact the organism’s overall population. The jaguar Panthera onca is the largest cat found in North America. It is found in areas across the Southwest, including Arizona, New Mexico, and Texas. It is a carnivore with powerful jaws and sharp teeth. Photo by US Fish and Wildlife Service/Gary M. Stoltz Which concept is shown by the relationship between the jaguar and deer?

Question illustration
A
adaptation
B
competitive exclusion
C
predator-prey
D
niche
8

What are the three types of interactions between organisms in an ecosystem?

A
competition, mutualism, and predation
B
territoriality, predation, and symbiosis
C
competition, predation, and symbiosis
D
commensalism, parasitism, and mutualism
9

Which of the following is not an example of predation?

A
A blue whale feeding on zooplankton
B
A tree obtaining nutrients from the soil
C
A caterpillar eating the leaves of a tree
D
A wolf eating a deer
10

The competitive exclusion principle states that _______.

A
more than two organisms are capable of filling the same niche
B
competition between species never leads to exclusion
C
two organisms who attempt to fill the same niche will develop a mutualistic relationship
D
when two organisms attempt to fill the same niche, one will exclude the other from the ecosystem
11

Competitive exclusion occurs when _______.

A
organisms attempt to fill the same niche
B
organisms mark their territory
C
organisms experience intraspecific aggression
D
organisms have a symbiotic relationship
12

Which of the following scenarios is representative of parasitism?

A
Tapeworms living in a mammal’s intestinal tract
B
Remora fish attaching themselves to sharks
C
Birds feeding on insects stirred up by grazing animals
D
Birds eating scraps of food from a crocodile’s teeth
13

The competitive exclusion principle states that two organisms cannot fill the same niche. Please select the best answer from the choices provided

A
T
B
F
14

What are the three types of interactions between organisms in an ecosystem?

A
competition, mutualism, and predation
B
territoriality, predation, and symbiosis
C
competition, predation, and symbiosis
D
commensalism, parasitism, and mutualism
15

Some types of organisms obtain needed energy through predation.

A
T
B
F
16

The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict about allowing nonnative species onto the islands?

A
It is so strict because a foreign species could mate with a native species and create a new species.
B
It is so strict because a foreign species could become a problem for tourism.
C
It is so strict because a foreign species could compete with a native species and drive it to extinction.
D
It is so strict because a foreign species may not be able to survive in a new environment.
17

Living organisms interact in a variety of ways for a variety of purposes. The imperial shrimp rides on sea cucumbers as they travel underwater. This interaction enables the shrimp to use little to no energy to move between the areas in which it feeds. The sea cucumber is typically unaware that the shrimp is using it for transport. Which type of interaction occurs between the imperial shrimp and its host organism?

A
mutualism
B
commensalism
C
parasitism
D
competition
18

Which of the following is not an example of predation?

A
A blue whale feeding on zooplankton
B
A tree obtaining nutrients from the soil
C
A caterpillar eating the leaves of a tree
D
A wolf eating a deer
19

Which of the following is an example of a niche?

A
A squirrel living in a tree.
B
A fish in a pond.
C
A lion hunting for zebra in a grassland.
D
Two birds flying in the air.
20

Competitive exclusion occurs when _______.

A
organisms attempt to fill the same niche
B
organisms mark their territory
C
organisms experience intraspecific aggression
D
organisms have a symbiotic relationship

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