Which of the following is the most likely organism to fossilize and be found in the fossil record? The earliest forms of bacteria A jellyfish with a soft body An octopus with a soft body A crustacean with a hard exoskeleton
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Which of the following is the most likely organism to fossilize and be found in the fossil record?
The earliest forms of bacteria
A jellyfish with a soft body
An octopus with a soft body
A crustacean with a hard exoskeleton
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- Your age-dating put the age of the rocks you are examining in the early Devonian period. Because of this, you suspect that the vertebrate remains you found might belong to some of the earliest tetrapods (four-legged animals including land vertebrates) to walk the Earth. Examine the cladogram below. What is the sister group to the land vertebrates? Lampreys Sharks Lungfish Land vertebrates Tetrapoda Choanata Fingers and toes Osteichthyes Choanae Gnathostomata Bony ribs and shoulder girdie Vertobrata Jaws O Lampreys Vertebrae O Tetrapoda O Amphibians Lungfish Ray-finned fish AmphibiansWhich organism is most likely to fossilize? A tropical frog A forest dwelling lizard All animals have the same probability of leaving fossil behind A marine snail A jellyfishAristotle classified all large, mobile, unshelled aquatic animals without a vertebral column as: the Malacostraca the zoophytes the birds the malacia the ostracoderm
- What are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii, Actinistia, Dipnoi, and Tetrapoda? How many species are in each of the above groups? Which one has the most species? When did the first vertebrates appear, and when did they first live on land? Where do we find the earliest fossils of vertebrates, and where do we find the earliest fossils of terrestrial (land-living) vertebrates? What are the following and how are they related to humans: Pongo, Gorilla, Pan, Sahelanthropus, Ardipithecus, Australopithecus, Homo erectus, and Homo neanderthalensis? Which of these is our closest living relative? What are some of the traits that these organisms share with us? When and where did each of the extinct forms above live? What does this tell us about when our lineage split from the most recent ancestor we share with our closest living relative?All of the following have been suggested as triggers for the Cambrian radiation of complex metazoans except: perhaps the Cambrian metazoans outcompeted the Ediacaran metazoans, opening up new ecological niches to fill perhaps a series of fortuitsus genetic changes provided more raw material for natural selection to act upon perhaps increased oxygen in the world ocean promoted the evolution of complex body forms perhaps the rise in sea level that flooded the margins of the continents during the earliest Paleozoic created abundant new ecological niches, promoting biodiversity O perhaps the "arms race" between predator and prey spurred evolutionary innovationFor about how many years of geological time have the dinosours existed on earth?? Did dinosours exist at the same time as humans? How do scientists determine when an era begins and when it ends? What is the purpose of making a geological timeline
- Which of the following is not a known bias in the fossil record? Fossils from well-studied areas are more likely to appear in the fossil record More abundant species are more likely to be found and in the fossil record Mammals preserve better than birds. Shells and skeletons preserve better than soft-bodied animals.Which of the following statements is incorrect in the context of fossilization? Minerals dissolved in the water gradually replace minerals in bones Sediments that slowly accumulate on top of the site extert increasing pressure Extreme pressure transforms the mineralized remains into rock. Impressions form detailed imprints of only external structures. Mineral particles settle out of the groundwater and crystallize inside cavities.A bird, from a modern phylogenetic systematic perspective, is properly classified as a member of all of the following except Group of answer choices Archosaur Gnathostome Amniote Synapsid
- You have the chance to use the very first time-machine created by humans. You volunteer to travel 520 million years back in time to collect coastal marine animals. The first organism you encounter is unusual looking and does not resemble any extant organism you know. You notice that the body is segmented, and the segments are not identical. You also notice that the organism has well developed eyes and one pair of long antennae. Their jointed appendages are branched but unequal in size and have various shapes. Moreover, the body appears to be rigid and covered dorsally with numerous spines. Try to classify this organism (e.g., its phylum) based on its appearance and describe its symmetry. Then speculate on its ecology, likely life history (reproduction), and key developmental features. The second organism that you encounter is fixed to the substrate, firm, and has fan shape with finger like projections. It is brightly colored. As you observe it, a few branches of the fan break off. You…What is a phylogeny a description of? a. mutations b. DNA c. evolutionary history d. organisms on EarthFigure 15.3 Which of the following statements is false? a. Eumetazoa have specialized tissues and Parazoa do not. b. Both acoelomates and pseudocoelomates have a body cavity. c. Chordates are more closely related to echinoderms than to rotifers according to the figure. d. Some animals have radial symmetry, and some animals have bilateral symmetry.
