Natural Selection Critical Juncture
Authored by Jeremy Pollin
Science
8th Grade
NGSS covered
Used 86+ times
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This quiz covers natural selection and population genetics, targeting 8th grade life science students. The content systematically builds understanding from basic population concepts through the complete mechanism of natural selection. Students need to distinguish between populations, traits, and variations within species, interpret histograms showing trait distribution, and understand how environmental pressures influence which traits become adaptive or non-adaptive. The quiz requires knowledge of inheritance patterns, gene function in trait expression, and the role of mutations in generating genetic diversity. Students must analyze real-world examples like poisonous newts, peppered moths, and stickleback fish to demonstrate their understanding of how populations change over generations through differential survival and reproduction rates based on environmental advantages. Created by Jeremy Pollin, a Science teacher in US who teaches grade 8. This comprehensive assessment serves multiple instructional purposes throughout a natural selection unit, from formative assessment during initial concept introduction to summative evaluation of student mastery. Teachers can use individual sections as warm-up activities to activate prior knowledge about populations and traits, assign histogram interpretation questions for guided practice, or deploy the complete quiz as homework to reinforce lessons on adaptive traits and inheritance. The sequential structure makes it ideal for review sessions before unit tests, while the real-world examples provide excellent discussion starters for deeper conceptual understanding. This quiz aligns with NGSS MS-LS4-4 (natural selection leads to adaptation), MS-LS4-6 (environmental changes affect populations), and MS-LS3-2 (sexual reproduction increases genetic variation), supporting standards-based instruction while building critical thinking skills about evolutionary processes.
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60 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of these is not a characteristic of a population?
living in the same area
same size
same type of organism
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
True or False: the fish in this image represent a population.
True
False
Tags
NGSS.MS-LS2-1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the main change in poisonous newts that has occurred over time?
There has been more variety in their color
There has been more variety in their size
They have become more poisonous
none
Tags
NGSS.HS-LS4-2
NGSS.HS-LS4-4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The specific characteristic of an individual organism is the definition of what?
feature
trait
variation
distribution
Tags
NGSS.MS-LS4-4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A characteristic that all members of a species have is defined as what?
feature
trait
variation
distribution
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
True or False: all members of this population have the same traits.
True
False
Tags
NGSS.MS-LS4-4
NGSS.MS-LS1-5
NGSS.MS-LS3-2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is one feature that all members of this butterfly population have in common?
size
design
antenna
number of wings
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