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The oldest body fossils of a land animal are of_____ .
a. insects c. cnidarians
b. roundworms d. myriapods
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- Australopiths are_______ . a. a type of monkey c. extinct hominins b. wet-nosed primates d. descendants of H. erectusWhale skeletons contain nonfunctional pelvic bonesa. as a result of convergent evolution.b. due to catastrophism.c. because whales evolved from ancestors that had hind legs.d. because the bones might be needed for a future adaptation.In the Paleozoic era, the first vertebrates to live on land were thea. amphibians.b. reptiles.c. birds.d. mammals
- Which is NOT true about the acrchaeopteryx fossil: A) had jaws with sharp teeth B) had three fingers with claws C) lived around 60 million years ago D) had a long bony tail___________ were an early group of humans with short, sturdy builds and heavy supraorbital ridges that lived throughout Europe and western Asia from about 250,000 to 28,000 years ago. (a) australopithecines (b) dryopithecines(c) archaic humans (d) Neandertals (e) DenisovansLobe-finned fishes are important because theya. were the first vertebrates.b. were the earliest animals.c. are closely related to tetrapods.d. lack jaws
- Fossil insects many times larger than any insects alive today have been dated to the Carboniferous and Permian periods. These fossils are evidence that during these periods a. the climate was much warmer than it is today. b. the oxygen concentration of the atmosphere was significantly higher than it is today. c. the carbon dioxide concentration of the atmosphere was lower than it is today. d. insects had fewer competitors for food than modern insects. e. there were fewer predators on insects than there are today.Why is it interesting that Homo luzonensis was found on an island? A. The islands only formed after Homo luzonensis became extinct, so Neanderthals must have put them on the island B. The islands were a few miles apart, and Homo luzonensis would have needed to either float by grabbing on a tree or make a raft C. The islands were a few miles apart, and Homo luzonensis clearly had to learn how to fly to get to them D. The islands were volcanoes when Homo luzonensis was alive, so it's unexpected that they were thereHumans evolved from a. monkeys. b. chimpanzees. c. gorillas. d. an ancestor shared with chimpanzees.
- Bivalves, cephalopods, and gastropods are alla. arthropods.b. lophophorans.c. cnidarians.d. annelids.e. molluscs.Cephalopods have complex eyes that arose separately from vertebrate eyes that are also used in vision. What's this an illustration of? A. Analogous structures B. Vestigial structures C. Homologous structures D. Missing linksScientists collectively call humans and their immediate ancestors (a) mammals (b) primates (c) anthropoids (d) hominoids (e) hominins