AnswersCA-Life Science B High SchoolRelationships Among Organisms

Relationships Among Organisms Answers

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most likely

b
become extinct
l
learn to fix nitrogen
b
benefit in the long run
s
stay the same
4

most likely

s
stay the same
d
decrease
i
increase
b
become extinct
6

most likely

a
a low reproductive rate
b
big difference between original and new habitats
a
a strong predator in new habitat
g
great tolerance to a wide range of conditions
7

Why are invasive species dangerous to the environment?

T
They pollute the environment.
T
They are always predators.
T
They threaten biodiversity.
T
They bring abiotic factors.
8

most likely

d
decrease
i
increase
b
become extinct
s
stay the same
9

As human travel increases, the number of introduced species likely

d
decreases.
i
increases.
s
stays the same.
i
is eliminated.
10

most likely

d
decrease
i
increase
s
stay the same
d
disappear
11

Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?

A
mutualism
B
commensalism
C
predation
D
coevolution
12

The cane toad, or Rhinella marina, was introduced to the Hawaiian Islands in 1932 by sugar cane farmers. The farmers released the toads in their crops to help control pests that were damaging the sugar cane. The cane toad has few natural predators because it secretes a poisonous toxin that kills the animals that consume it. As a result, the cane toad population thrived, and by 1935, it numbered hundreds of thousands. Which role does the cane toad play in the Hawaiian Islands?

A
native species
B
invasive species
C
reintroduced species
D
endangered species
13

Which type of symbiotic relationship is described in the following scenario?Termites are unable to digest some plant materials (fiber). Termite stomachs contain bacteria that digest the fiber in wood for the termites. In turn, the bacteria are provided with a hospitable environment to carry out their life processes.

A
commensalism
B
mutualism
C
parasitism
D
competition
14

A relationship in which one species kills and consumes another species is known as

A
predation.
B
parasitism.
C
commensalism.
D
mutualism.
15

What is a snake that eats a mouse an example of?

A
predation
B
competition
C
mutualism
D
parasitism

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