The Two-Sided Attack on the Spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps Spiny Cactus Organism Collared peccary (musk hog) 300 Parasitic wasp 200 Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cact and these two organisms 100 O 70 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus and eat the inner pulp of the plant, usually destroying the plant. These wasps lay eggs on spiny cactus plants that have a large number of spines. O. O O O. dicts how Cact with 70 spines Cacti with 100 spines Cacti with 130 spines Cact with 70 spines Cacti with 100 spines Cacti with 130 spines Cacti with 70 spines Cact with 100 spines Cacti with 130 spines Cacti with 70 spines Cacti with 100 spines Cacti with 130 spines wa Change in the Population They will decrease due to the collared peccaries They will increase due to their ability to survive and reproduce They will decrease due to the parasitic wasps Change in the Population They will decrease due to the parasitic wasps They will increase due to their ability to survive and reproduce They will decrease due to the collared peccaries Change in the Population They will increase due to their ability to survive and reproduce They will decrease due to the parasitic wasps They will increase due to their ability to survive and reproduce Change in the Population They will increase due to their ability to survive and reproduce They will decrease due to the collared peccaries They will increase due to their ability to survive and reproduce

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The Two-Sided Attack on the Spiny Cactus
The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the
introduction of collared peccaries and parasitic wasps.
Spiny Cactus
Organism
Collared peccary
(musk hog)
Number of Cacti
Parasitic wasp
300
200
100
T
Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cacti and these two organisms.
70
1
1
80 90 100 110 120 130
Number of Spines
Organisms Introduced into the Ecosystem
Relationship with Spiny Cactus Plants
They eat spiny cactus plants that have a small number of spines.
They lay eggs at the base of cactus spines. When the eggs
hatch, the emerging grubs dig into the interior of the cactus
and eat the inner pulp of the plant, usually destroying the plant.
These wasps lay eggs on spiny cactus plants that have a large
number of spines.
Which predicts how the spiny cactus population will MOST LIKELY change over a long period of time?
O
O
A.
C.
D.
Cacti with 70
spines
Cacti with 100
spines
Cacti with 130
spines
Cacti with 70
spines
Cacti with 100
spines
Cacti with 130
spines
Cacti with 70
spines
Cacti with 100
spines
Cacti with 130
spines
Cacti with 70
spines
Cacti with 100
spines
Cacti with 130
spines
Change in the Population
They will decrease due to the collared peccaries
They will increase due to their ability to survive and
reproduce
They will decrease due to the parasitic wasps
Change in the Population
They will decrease due to the parasitic wasps
They will increase due to their ability to survive and
reproduce
They will decrease due to the collared peccaries
Change in the Population
They will increase due to their ability to survive and
reproduce
They will decrease due to the parasitic wasps
They will increase due to their ability to survive and
reproduce
Change in the Population
They will increase due to their ability to survive and
reproduce
They will decrease due to the collared peccaries
They will increase due to their ability to survive and
reproduce
Transcribed Image Text:The Two-Sided Attack on the Spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps. Spiny Cactus Organism Collared peccary (musk hog) Number of Cacti Parasitic wasp 300 200 100 T Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cacti and these two organisms. 70 1 1 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus and eat the inner pulp of the plant, usually destroying the plant. These wasps lay eggs on spiny cactus plants that have a large number of spines. Which predicts how the spiny cactus population will MOST LIKELY change over a long period of time? O O A. C. D. Cacti with 70 spines Cacti with 100 spines Cacti with 130 spines Cacti with 70 spines Cacti with 100 spines Cacti with 130 spines Cacti with 70 spines Cacti with 100 spines Cacti with 130 spines Cacti with 70 spines Cacti with 100 spines Cacti with 130 spines Change in the Population They will decrease due to the collared peccaries They will increase due to their ability to survive and reproduce They will decrease due to the parasitic wasps Change in the Population They will decrease due to the parasitic wasps They will increase due to their ability to survive and reproduce They will decrease due to the collared peccaries Change in the Population They will increase due to their ability to survive and reproduce They will decrease due to the parasitic wasps They will increase due to their ability to survive and reproduce Change in the Population They will increase due to their ability to survive and reproduce They will decrease due to the collared peccaries They will increase due to their ability to survive and reproduce
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