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Science and Technology/Engineering | Grade : 6
Discipline - Life Science
Core Idea - Biological Evolution: Unity and Diversity
[6.LS.4.2] - Construct an argument using anatomical structures to support evolutionary relationships among and between fossil organisms and modern organisms. Clarification Statement: Evolutionary relationships include (a) some organisms have similar traits with similar functions because they were inherited from a common ancestor, (b) some organisms have similar traits that serve similar functions because they live in similar environments, and (c) some organisms have traits inherited from common ancestors that no longer serve their original function because their environments are different than their ancestors’ environments.
[WCA.6-8.1] -
Write arguments focused on discipline-specific content.
[3.LS.4.1] -
Use fossils to describe types of organisms and their environments that existed long ago and compare those to living organisms and their environments. Recognize that most kinds of plants and animals that once lived on Earth are no longer found anywhere.
Clarification Statement: Comparisons should focus on physical or observable features. State Assessment Boundary: Identification of specific fossils or specific present-day plants and animals, dynamic processes, or genetics are not expected in state assessment.
[4.LS.1.1] -
Construct an argument that animals and plants have internal and external structures that support their survival, growth, behavior, and reproduction.
Clarification Statements: Animal structures can include legs, wings, fins, feathers, trunks, claws, horns, antennae, eyes, ears, nose, heart, stomach, lung, brain, and skin. Plant structures can include leaves, roots, stems, bark, branches, flowers, fruit, and seeds. State Assessment Boundary: State assessment will be limited to macroscopic structures.
[HS.LS.4.1] -
Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence, including molecular, anatomical, and developmental similarities inherited from a common ancestor (homologies), seen through fossils and laboratory and field observations. Clarification Statement: Examples of evidence can include the work of Margulis on endosymbiosis, examination of genomes, and analyses of vestigial or skeletal structures.