InQuizitive Logo Chapter 14: The History of Life: Dinosaur Hunters toby.dakin-beeby.390@my.csun.edu Page 273 14.4. Classify a given species at each level of the Linnaean system. The scientific name for humans is Homo sapiens. In this name, Homo represents what? the order name the genus name the family name the species name Question Confidence I know I know it!100 points You can gain or lose up to 100 points on this question. Activity Score (View Activity Report) Your activity score is 1450 Chart Line chart with 27 data points. The chart has 1 X axis displaying values. Data ranges from 1 to 26. The chart has 1 Y axis displaying values. Data ranges from 0 to 1450. End of interactive chart. Current Grade 97% √ Your grade has been submitted Question Help/Challenge
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It consists of several hierarchical levels, including kingdom, phylum, class, order, family, genus, and species. Show more…
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Archaeopteryx is an extinct animal having feathers like a bird but teeth and a long bony tail like a reptile. Only a few fossil specimens are known from the Jurassic geological period. If specimens belong to the same species then it is thought that there should be a strong relationship between the lengths of a pair of bones from all individuals. Data below is the length of the femur (a leg bone) and the humerus (an arm bone) for five specimens of Archaeopteryx fossil that have both bones. Femur length/cm | Humerus length/cm 38 | 37 52 | 62 59 | 63 64 | 75 74 | 84 a) Plot this data appropriately to decide if the length of the humerus bone can be predicted from the length of the femur. Present your graph well here. b) Is there a valid linear relationship? Show an appropriate plot as evidence for any statement. c) State the correlation value squared and state what this indicates.
Madhur L.
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Only six fossil specimens are known. Because these specimens differ greatly in size, some scientists think they are different species rather than individuals from the same species. We will examine some data. If the specimens belong to the same species and differ in size because some are younger than others, there should be a positive linear relationship between the lengths of a pair of bones from all individuals. An outlier from this relationship would suggest a different species. Here are data on the lengths in centimeters of the femur (a leg bone) and the humerus (a bone in the upper arm) for the five specimens that preserve both bones: $^{10}$ $$\begin{array}{lccccc}\hline \text { Femur }(x): & 38 & 56 & 59 & 64 & 74 \\\text { Humerus }(y): & 41 & 63 & 70 & 72 & 84 \\\hline\end{array}$$ (a) Make a scatterplot. Do you think that all five specimens come from the same species? Explain. (b) Find the correlation $r$ step by step, using the formula on page 154 . Explain how your value for $r$ matches your graph in part (a).
Describing Relationships
Scatterplots and Correlation
Study Worksheet 12) Geologic Time Scale: (14pts) Match the letter below to each evolutionary "event". A) Early feathered birds and furry mammals appear in this period. B) "The great dying" where 96% of all marine species, including trilobites, go extinct. C) Horses were domesticated by nomadic human tribes in central Asia. D) Flying insects dominate swampy forests and the first egg-laying reptiles appear. E) Marine jawless fishes diversify and primitive non-vascular plants colonize land. F) Multicellular aerobic organisms diversify with rising global oxygen levels. G) The oldest fossils of trilobites and annelid worms are found here. H) Anoxygenic and oxygenic photosynthetic microbes form stromatolite fossils. I) A massive terrestrial extinction wipes out non-avian "dinosaurs" here. J) Whales evolved from semi-aquatic grazing mammals adapting to the seas. K) The first flying pterosaur reptiles radiate following a major extinction. L) Jawed bony fishes first colonize freshwater habitats. M) No evidence of life is present. N) The first salamander-like amphibians colonize land.
Danielle A.
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