Free Printable WorksheetScienceGrade 7Science CurriculumMS-LS4-2

7.53 Anatomical Evidence and Evolutionary Relationships Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 7 Science worksheet provides structured practice on 7.53 Anatomical Evidence and Evolutionary Relationships. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Anatomical Evidence and Evolutionary Relationships - Which anatomical comparison best supports a common ancestry claim? (NGSS MS‑LS4‑2)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 7

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 7.53 Anatomical Evidence and Evolutionary Relationships skill assessments:

Problem 1Difficulty: Mastery

Use the planned capstone comparison of modern whale, early whale fossil, shark, and wolf forelimbs and hind-limb structures. Which conclusion is best supported by the anatomical evidence?

AHabitat is better evidence of ancestry than anatomy.

BWhales likely share ancestry with land mammals because modern and fossil whales retain or show limb structures that match the mammal body plan.

CSharks and wolves are equally related to whales because all have body parts used for movement.

DWhales are most closely related to sharks because both live in water.

Solution & Explanation:The comparison ties together fossil whale hind limbs, modern whale vestigial structures, and mammal-style limb anatomy. Those structural clues are stronger than habitat or function.

Problem 2Difficulty: Mastery

Which option best combines modern and fossil anatomical evidence to support common ancestry?

APenguins and seals both have streamlined bodies.

BModern whales have tiny pelvic bones, and early whale fossils show larger hind limbs.

CDolphins and sharks both have fins, and both live in oceans.

DBats and butterflies both can fly at night.

Solution & Explanation:This answer combines vestigial anatomy in a living organism with fossil anatomy from earlier relatives, making the evolutionary explanation especially strong.

Problem 3Difficulty: Mastery

A scientist compares a crocodile forelimb, a bird wing, and an insect wing. Which pair offers the strongest evidence of common ancestry?

ACrocodile forelimb and bird wing because both are vertebrate forelimbs with corresponding bones

BCrocodile forelimb and insect wing because both help movement

CAll pairs are equally informative

DBird wing and insect wing because both are wings

Solution & Explanation:A bird wing is a modified vertebrate forelimb, so it shares corresponding bones with a crocodile forelimb. That is better evidence than simple wing function.

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 7 Science students. It aligns with educational standard MS-LS4-2 (Primary standard selected for prompt fields in this prompt cell: NGSS MS-LS4-2. Skill statement in this prompt cell: Which anatomical comparison best supports a common ancestry claim? Associated standards listed with this skill in this prompt cell: NGSS MS-LS4-2. Use this prompt-provided wording as the supporting standard description for this workflow.).