Worksheetsintro to human evolution exam 3
Total questions: 30
Worksheet time: 15mins
Which characteristic most strongly led early researchers to misclassify the Gibraltar 1 skull as pathological rather than evolutionary?
Large teeth with human-like jaw
Smooth brow ridges with tall cranium
Narrow nasal cavity with small brow ridges
Huge nasal cavity with very wide face
Thomas H. Huxley’s role in shaping modern evolutionary studies is best summarized by which statement?
He rejected Darwin and emphasized fossil typology
He discovered the Feldhofer Neanderthal and named the species
He linked primate diversity to humans and formalized biological anthropology
He proved Engis 2 was a modern human infant
Trinil 2 on the Solo River was argued by Dubois to be a transitional form for what primary reason?
It had enormous canines like gorillas
Its skull was angular with massive brow ridges and an erect-walking anatomy
It showed a human-sized brain with ape-like teeth
It lacked femoral evidence for bipedalism
Continental drift affecting ocean gateways is cited as a driver of long-term cooling. Which tectonic change most plausibly intensified Northern Hemisphere glaciation via ocean circulation?
Opening of the Arctic–Atlantic gateway, warming Europe
Breakup of Antarctica, enhancing tropical rainfall
Raising of Central America, altering the Gulf Stream
Collision of Africa with Eurasia, increasing monsoons
Oxygen isotope stages are used to track glacial–interglacial cycles. Given that even-numbered stages are cold and odd-numbered stages are warm, what do Stage 2 and Stage 5 represent, respectively?
Stage 2: Last Glacial Maximum; Stage 5: Last Interglacial
Stage 2: Warmest Holocene; Stage 5: Earliest glacial
Stage 2: Last Interglacial; Stage 5: Maximum glaciation
Stage 2: Mild cooling phase; Stage 5: Moderate warming
Which anatomical feature most directly enables weight transfer from one leg to the other during human bipedal stance?
Extended elbows stabilizing trunk
Curved femur increasing torsion
Sagittal ilium reducing leverage
Valgus knee bringing joints closer
Which trait best distinguishes robust australopiths like Paranthropus boisei from gracile forms such as Australopithecus afarensis?
Brain volume far exceeding later Homo species
Diurnal activity pattern with terrestrial bipedalism
Long curved phalanges adapted for arboreal grasping
Large molars with thick enamel and massive jaws
The notes list precision grip as a synapomorphy with later Homo and connect it to tool-related behaviors. Considering the anatomical demands of manipulating stone flakes, which trait combination best explains how Homo habilis could reliably perform precise cutting movements shown in the diagram?
Precision grip with enhanced manual dexterity plus planning ability
Increased brain size plus longer upper limb for arboreality
Shorter face with reduced prognathism plus enlarged molars
Diurnal activity pattern plus omnivorous diet diversity
The notes define a tool as an object taken from the external world to fulfill a purpose and distinguish tool use from tool making. Given the Olduvai Gorge context, which statement most accurately separates these behaviors in early Homo?
Both tool use and making are identical behaviors in early hominins
Tool use is employing suitable objects, while making involves manufacture
Tool making is using found objects without modification for tasks
Tool use requires shaping raw materials into standardized forms
Which anatomical trait most directly enables a precision grip important for tool manufacture?
Restricted digits preventing fingertip contact
Flattened apical tufts like chimpanzees
Separated tendon allowing thumb movement alone
Short thumb with thick tendons
Which inference best explains the reduction in tooth size observed in later Homo erectus populations?
Greater reliance on plant fiber and tough seeds
Genetic drift unrelated to dietary changes
Shift to softer fruits due to climate change
Meat-heavy diet requiring less intense chewing
A paleoanthropologist compares crania from H. erectus (Zhoukoudian) and H. heidelbergensis (Petralona). Which conclusion aligns with evidence on orbital spacing and brain size?
Orbital distance differs strongly and brain size is far smaller
Orbital spacing varies widely and brain size is identical
Orbital spacing is similar and brain size is slightly larger
Orbital distance is narrower and brain size is greatly larger
Which combination best distinguishes Neanderthal craniofacial morphology from that of modern humans?
Small brow ridges with retracted midface and chin
Reduced eye orbits with retracted nasal aperture
Double-arched brow ridges with pulled-forward midface
Thin zygomatics with enlarged parietals and chin
The diagram shows labels for Broca’s area and Wernicke’s area in the left hemisphere. Which interpretation best explains how damage to each would differentially affect language?
Broca’s damage impairs word meaning; Wernicke’s damage impairs articulation
Broca’s damage impairs memory; Wernicke’s damage impairs attention
Broca’s damage impairs speech production; Wernicke’s damage impairs comprehension
Broca’s damage impairs hearing; Wernicke’s damage impairs writing
Which anatomical ratio in modern humans supports packaged vowel production?
Horizontal-to-vertical tract 3:2 ratio
Horizontal-to-vertical tract 1:2 ratio
Horizontal-to-vertical tract 2:1 ratio
Horizontal-to-vertical tract 1:1 ratio
Damage to key speech areas can lead to which outcome?
Normal speech but impaired hearing
Comprehension intact with gibberish output
Perfect grammar with no semantics
Complete muteness without comprehension
Facial flattening around 40,000 years ago is linked to which capacity?
Reduced need for laryngeal descent
Better olfactory discrimination ability
Enhanced chewing force and tooth wear
Improved conditions for good speech
Which claim about Homo erectus and language is most supported?
Had fully modern language identical to ours
Had language more precise than modern humans
Had no language and communicated only with calls
Likely had some language but less quick or precise
Which evolutionary change most contributed to complex speech capacity?
Reduction of hand strength and grip
Increase in foot arch and locomotion
Expansion of molars and premolars
Changes in faces and vocal tracts
What misconception about Neanderthal speech is corrected by vocal tract data?
They had nearly suitable but not fully quantal tracts
They had fully modern speech identical to ours
They lacked any capacity for vocalization
They produced more distinct vowels than humans
Which statement about scientific racism and classification is accurate?
Race categories improved social relations widely
Classification relied entirely on genetic data
Taxonomic listings framed as governance were racist
Hierarchical taxonomy began only in the 1900s
How did Linnaean ideas affect global views of race?
They relied solely on neutral genetic evidence
They shaped how people think about race worldwide
They eliminated racial categories entirely
They prevented any bias in classification
Which statement about Blumenbach fits the historical account?
He was one of Linnaeus’s students
He identified the Duffy blood group
He disproved vocal tract quantal theory
He founded Mendelian genetics
Within-race differences between populations account for roughly what proportion?
Nearly 40.0 percent of diversity
Close to 2.1 percent of diversity
Approximately 20.3 percent of diversity
An additional 8.3 percent of diversity
After accounting for within- and between-population variation, what remains for racial classification?
About 6.3 percent of diversity
Almost 0.0 percent of diversity
Roughly 25.0 percent of diversity
Nearly 50.0 percent of diversity
What does the data imply about perceived racial differences versus actual variation?
Perception exaggerates differences compared to within-group variation
Perception shows groups are completely identical
Perception underestimates differences across groups
Perception matches genetic differences exactly
Plan a research approach to test quantal speech conditions across hominins. Which variable is most critical to measure?
Maximum lung capacity during phonation
Tongue muscle strength during chewing
Vocal tract shape enabling vowel distinctness
Average speech rate in spontaneous dialogue
Evaluate claims about Homo erectus language: which reasoning aligns with anatomical evidence?
Language superior to modern humans
Fully modern language identical to ours
No language capacity due to brain size
Partial language capacity with less precision
Given genetic diversity percentages, which inference about race categories is most warranted?
Race captures most between-individual variation
Race explains major biomedical differences
Race maps neatly onto human genetic structure
Race has minimal genetic basis and low utility
Which reasoning best critiques Linnaean race lists that describe what groups are “governed by”?
Framing traits as governance embeds bias and racism
Linking lists to neutral taxonomy eliminates bias
Using only genetic markers removes social bias
Describing governance reveals objective hierarchies
