Difference between revisions of "MS-LS2-2"

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{{DISPLAYTITLE:MS-LS2-2 {{!}} Interactions in Ecosystems}}
 
 
{{Navlinks|MS-LS2-4|MS-LS2-5|← MS-LS2-4|MS-LS2-5 →}}
 
{{Navlinks|MS-LS2-4|MS-LS2-5|← MS-LS2-4|MS-LS2-5 →}}
 
{{learningstandard
 
{{learningstandard
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| topic = Interactions in Ecosystems
 
| ls = Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.
 
| ls = Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.
 
| cs = Emphasis is on predicting patterns of interactions such as competition, predation, mutualism, and parasitism in different ecosystems in terms of the relationships among and between organisms.
 
| cs = Emphasis is on predicting patterns of interactions such as competition, predation, mutualism, and parasitism in different ecosystems in terms of the relationships among and between organisms.
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! style="padding: 0.5em 1.5em;" | Question
 
! style="padding: 0.5em 1.5em;" | Question
 
|-
 
|-
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| rowspan="4" style="background-color:white;" | [[Spring 2026 Grade 8 Science Test|Spring 2026]]
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| rowspan="4" style="background-color:white;" | [[Spring 2026 Grade 8 Science Test|Spring 2026 Grade 8 Test]]
 
| style="background-color:white;" | [[Questions:Cowbirds|Cowbirds]]
 
| style="background-color:white;" | [[Questions:Cowbirds|Cowbirds]]
 
| style="background-color:white;" | [[Questions:Cowbirds#q1|Question 1]]
 
| style="background-color:white;" | [[Questions:Cowbirds#q1|Question 1]]
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| style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle#q3|Question 27]]
 
| style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle#q3|Question 27]]
 
|-
 
|-
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| style="background-color:white;" | [[Spring 2025 Grade 8 Science Test|Spring 2025]]
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| style="background-color:white;" | [[Spring 2025 Grade 8 Science Test|Spring 2025 Grade 8 Test]]
 
| style="background-color:white;" | [[Questions:The Lake Erie Ecosystem|The Lake Erie Ecosystem]]
 
| style="background-color:white;" | [[Questions:The Lake Erie Ecosystem|The Lake Erie Ecosystem]]
 
| style="background-color:white;" | [[Questions:The Lake Erie Ecosystem#q1|Question 10]]
 
| style="background-color:white;" | [[Questions:The Lake Erie Ecosystem#q1|Question 10]]
 
|-
 
|-
−
| rowspan="3" style="background-color:white;" | [[Spring 2024 Grade 8 Science Test|Spring 2024]]
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| rowspan="3" style="background-color:white;" | [[Spring 2024 Grade 8 Science Test|Spring 2024 Grade 8 Test]]
 
| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird|Ecosystem of the Eastern Bluebird]]
 
| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird|Ecosystem of the Eastern Bluebird]]
 
| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird#q1|Question 44]]
 
| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird#q1|Question 44]]
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| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird#q3|Question 46]]
 
| style="background-color:white;" | [[Questions:Ecosystem of the Eastern Bluebird#q3|Question 46]]
 
|}
 
|}
 +
 +
== Vocabulary ==
 +
Terms from the [[Middle School Science Glossary]] that come from this standard or from the released Grade 8 Science Test questions that assess it.
 +
 +
<div class="vocab-subhead">From this standard</div>
 +
<div class="vocab-list" style="column-width:14em;">
 +
* competition
 +
* competitive interaction
 +
* ecosystem
 +
* environment
 +
* explanation
 +
* interaction
 +
* interdependent relationship
 +
* mutualism
 +
* mutually beneficial interaction
 +
* negative interaction
 +
* organism
 +
* parasitism
 +
* pattern of interaction
 +
* positive interaction
 +
* predation
 +
* predator
 +
* predatory interaction
 +
* species
 +
* survival
 +
</div>
 +
 +
<div class="vocab-subhead">From released test questions</div>
 +
<div class="vocab-list" style="column-width:20em;">
 +
* [[Questions:Cowbirds#q5|adaptation]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|antibiotic]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|argument]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|atmosphere]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|bacteria]] – Spring 2026
 +
* [[Questions:Cowbirds#q5|behavior]] – Spring 2026
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q1|berry]] – Spring 2024
 +
* [[Questions:Cowbirds#q1|bird]] – Spring 2026
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q1|birdhouse]] – Spring 2024
 +
* [[Questions:Cowbirds#q1|compete]] – Spring 2026
 +
* [[Questions:The Lake Erie Ecosystem#q1|competitive relationship]] – Spring 2025
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|decomposition]] – Spring 2026
 +
* [[Questions:Cowbirds#q5|egg]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q3|Spring 2024]]
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q2|energy]] – Spring 2024
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q3|environmental factor]] – Spring 2024
 +
* [[Questions:Cowbirds#q5|evidence]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q2|Spring 2024]]
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q1|farmland]] – Spring 2024
 +
* [[Questions:The Lake Erie Ecosystem#q1|fish species]] – Spring 2025
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q2|flow of energy]] – Spring 2024
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q3|food]] – Spring 2024
 +
* [[Questions:Ecosystem of the Eastern Bluebird#q1|food source]] – Spring 2024
 +
* [[Questions:Cowbirds#q2|food web]] – Spring 2026, [[Questions:The Lake Erie Ecosystem#q1|Spring 2025]], [[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024]]
 +
* [[Questions:Cowbirds#q1|grazing animal]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|greenhouse gas]] – Spring 2026
 +
* [[Questions:Cowbirds#q2|habitat]] – Spring 2026, [[Questions:The Lake Erie Ecosystem#q1|Spring 2025]]
 +
* [[Questions:The Lake Erie Ecosystem#q1|habitat degradation]] – Spring 2025
 +
* [[Questions:The Lake Erie Ecosystem#q1|habitat diversity]] – Spring 2025
 +
* [[Questions:Cowbirds#q5|hatching]] – Spring 2026
 +
* [[Questions:Cowbirds#q5|hatching success]] – Spring 2026
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* [[Questions:Cowbirds#q5|host]] – Spring 2026
 +
* [[Questions:Cowbirds#q5|host bird]] – Spring 2026
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* [[Questions:Cowbirds#q1|insect]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024]]
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* [[Questions:The Lake Erie Ecosystem#q1|invasive species]] – Spring 2025
 +
* [[Questions:Cowbirds#q5|migration]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024]]
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|model]] – Spring 2026, [[Questions:The Lake Erie Ecosystem#q1|Spring 2025]], [[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024]]
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|molecule]] – Spring 2026
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* [[Questions:The Lake Erie Ecosystem#q1|native species]] – Spring 2025
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* [[Questions:Cowbirds#q5|nest]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q3|Spring 2024]]
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* [[Questions:Cowbirds#q5|nest success]] – Spring 2026
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* [[Questions:Cowbirds#q5|nesting behavior]] – Spring 2026
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* [[Questions:Ecosystem of the Eastern Bluebird#q1|nesting site]] – Spring 2024
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|nitrogen cycle]] – Spring 2026
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|nitrogen fixation]] – Spring 2026
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|nitrogen-fixing bacteria]] – Spring 2026
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* [[Questions:The Lake Erie Ecosystem#q1|non-photosynthetic]] – Spring 2025
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* [[Questions:Ecosystem of the Eastern Bluebird#q1|orchard]] – Spring 2024
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* [[Questions:The Lake Erie Ecosystem#q1|overfishing]] – Spring 2025
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* [[Questions:Cowbirds#q5|parasitize]] – Spring 2026
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* [[Questions:The Lake Erie Ecosystem#q1|photosynthetic]] – Spring 2025
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* [[Questions:The Lake Erie Ecosystem#q1|phytoplankton]] – Spring 2025
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* [[Questions:The Lake Erie Ecosystem#q1|pollution]] – Spring 2025
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|population]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024]]
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* [[Questions:Cowbirds#q2|predator-prey relationship]] – Spring 2026
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* [[Questions:Ecosystem of the Eastern Bluebird#q1|prey]] – Spring 2024
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|protein]] – Spring 2026
 +
* [[Questions:Cowbirds#q1|resource]] – Spring 2026
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|root]] – Spring 2026
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* [[Questions:Ammonia and the Nitrogen Cycle#q3|seed]] – Spring 2026, [[Questions:Ecosystem of the Eastern Bluebird#q3|Spring 2024]]
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|soil]] – Spring 2026
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* [[Questions:Ecosystem of the Eastern Bluebird#q3|territory]] – Spring 2024
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|tissue]] – Spring 2026
 +
* [[Questions:Ammonia and the Nitrogen Cycle#q3|usable nitrogen]] – Spring 2026
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* [[Questions:Ecosystem of the Eastern Bluebird#q1|woodland]] – Spring 2024
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* [[Questions:The Lake Erie Ecosystem#q1|zooplankton]] – Spring 2025
 +
</div>
 +
 +
<div class="vocab-subhead">Implied by this standard</div>
 +
<div class="vocab-list">
 +
* symbiosis and commensalism – implied by "competition, predation, mutualism, and parasitism" and "mutually beneficial interactions"
 +
</div>
  
 
{{PerformanceLevelMS}}
 
{{PerformanceLevelMS}}
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| Level4 = Construct an explanation that predicts multiple patterns of interactions, both positive and negative, among organisms in a variety of ecosystems.
 
| Level4 = Construct an explanation that predicts multiple patterns of interactions, both positive and negative, among organisms in a variety of ecosystems.
 
| Level3 = Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.
 
| Level3 = Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.
 +
| Example3 = <span class="pld-chip pld-chip-ms">[[Questions:Ecosystem of the Eastern Bluebird#q3|Spring 2024 · Q46]]</span>
 
| Level2 = Given a pattern of interaction (interdependent relationship) in an ecosystem, identify which organisms display this interaction.
 
| Level2 = Given a pattern of interaction (interdependent relationship) in an ecosystem, identify which organisms display this interaction.
 +
| Example2 = <span class="pld-chip pld-chip-ms">[[Questions:Cowbirds#q2|Spring 2026 · Q2]]</span> <span class="pld-chip pld-chip-ms">[[Questions:Cowbirds#q5|Spring 2026 · Q5]]</span> <span class="pld-chip pld-chip-ms">[[Questions:The Lake Erie Ecosystem#q1|Spring 2025 · Q10]]</span> <span class="pld-chip pld-chip-ms">[[Questions:Ecosystem of the Eastern Bluebird#q2|Spring 2024 · Q45]]</span>
 
| Level1 = Identify the type of interaction (interdependent relationship) from those provided, between two different organisms in an ecosystem.
 
| Level1 = Identify the type of interaction (interdependent relationship) from those provided, between two different organisms in an ecosystem.
 +
| Example1 = <span class="pld-chip pld-chip-ms">[[Questions:Ammonia and the Nitrogen Cycle#q3|Spring 2026 · Q27]]</span> <span class="pld-chip pld-chip-ms">[[Questions:Cowbirds#q1|Spring 2026 · Q1]]</span> <span class="pld-chip pld-chip-ms">[[Questions:Ecosystem of the Eastern Bluebird#q1|Spring 2024 · Q44]]</span>
 
}}
 
}}
  
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| TOPIC = MS. Interdependent Relationships in Ecosystems
 
| TOPIC = MS. Interdependent Relationships in Ecosystems
 
}}
 
}}
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<metadesc>NYS Standard MS-LS2-2: Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.</metadesc>
 

Latest revision as of 09:45, 18 October 2026

← MS-LS2-4
MS-LS2-5 →

Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems.

Clarification statement: Emphasis is on predicting patterns of interactions such as competition, predation, mutualism, and parasitism in different ecosystems in terms of the relationships among and between organisms.

Grade 8 Science Test Questions

Released New York State Grade 8 science test questions that assess MS-LS2-2 are listed here by test and question cluster. Each link opens the question with its answer key.

Exam Cluster Question
Spring 2026 Grade 8 Test Cowbirds Question 1
Cowbirds Question 2
Cowbirds Question 5
Ammonia and the Nitrogen Cycle Question 27
Spring 2025 Grade 8 Test The Lake Erie Ecosystem Question 10
Spring 2024 Grade 8 Test Ecosystem of the Eastern Bluebird Question 44
Ecosystem of the Eastern Bluebird Question 45
Ecosystem of the Eastern Bluebird Question 46

Vocabulary

Terms from the Middle School Science Glossary that come from this standard or from the released Grade 8 Science Test questions that assess it.

From this standard
  • competition
  • competitive interaction
  • ecosystem
  • environment
  • explanation
  • interaction
  • interdependent relationship
  • mutualism
  • mutually beneficial interaction
  • negative interaction
  • organism
  • parasitism
  • pattern of interaction
  • positive interaction
  • predation
  • predator
  • predatory interaction
  • species
  • survival
From released test questions
Implied by this standard
  • symbiosis and commensalism – implied by "competition, predation, mutualism, and parasitism" and "mutually beneficial interactions"

Performance Level Descriptions

Every Grade 8 Science Test question on MS-LS2-2 is written to match one of the performance level descriptions (PLDs) below.

Level 1: Identify the type of interaction (interdependent relationship) from those provided, between two different organisms in an ecosystem. Spring 2026 · Q27 Spring 2026 · Q1 Spring 2024 · Q44
Level 2: Given a pattern of interaction (interdependent relationship) in an ecosystem, identify which organisms display this interaction. Spring 2026 · Q2 Spring 2026 · Q5 Spring 2025 · Q10 Spring 2024 · Q45
Level 3: Construct an explanation that predicts patterns of interactions among organisms in a variety of ecosystems. Spring 2024 · Q46
Level 4: Construct an explanation that predicts multiple patterns of interactions, both positive and negative, among organisms in a variety of ecosystems.
Notice: PLD levels!

Resources

Examples and discussion of resources for the learning, teaching, and assessment of MS-LS2-2.

Pixel beaver This section could be expanded upon. You can help out by adding to this section.


NGSS Dimensions

Performance expectation MS-LS2-2 was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices
  • Constructing Explanations and Designing Solutions
    • Construct an explanation that includes qualitative or quantitative relationships between variables that predict phenomena.
Disciplinary Core Ideas
  • LS2.A: Interdependent Relationships in Ecosystems
    • Similarly, predatory interactions may reduce the number of organisms or eliminate whole populations of organisms. Mutually beneficial interactions, in contrast, may become so interdependent that each organisms requires the other for survival. Although the species involved in these competitive, predatory, and mutually beneficial interactions vary across ecosystems, the patterns of interactions of organisms with their environments, both living and nonliving, are shared.
Crosscutting Concepts
  • Patterns
    • Patterns can be used to identify cause and effect relationships.
Page contributors: Conrad Richman, Caroline Leonard, Shirley Shameen
MS | MS. Interdependent Relationships in Ecosystems
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