Certain physical changes were necessary to allow human ancestral species to walk on two legs (bipedalism) as our 'obligatory' or preferred form of locomotion. This includes broad changes to all of the following except ____. a. Double curved sping b. Arched feet c. Wide pelvis d. Long flat ankle bones for leaping
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34. Certain physical changes were necessary to allow human ancestral species to walk on two legs (bipedalism) as our 'obligatory' or preferred form of locomotion. This includes broad changes to all of the following except ____.
a. Double curved sping
b. Arched feet
c. Wide pelvis
d. Long flat ankle bones for leaping
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- .The skeletons of early fossil Homo and archaic Homo sapiens are marked by very ____ skeletons; this pattern demonstrates a dramatic ____ with the origin of modern humans. a. well designed; increase b. robustly built; decrease c. gracile; increase d. sturdy; increaseExamine the limb bones of these two primates. For each one, what was the most likely broad locomotor pattern? (the images do not necessarily represent the primary mode of locomotion for each primate. Rely on anatomy, rather than the posture in the image). 1. Picture 1: A. Leaper B. Suspensory C. Terrestrial Quadruped D. Aboreal Quadruped 2. Picture 2: A. Leaper B. Suspensory C. Terrestrial Quadruped D. Aboreal QuadrupedYou are studying the skeleton and bone morphology across reptiles. You find that in alligators a certain bone in the jaw has elongated whereas in a species of chameleon the bone has shortened in the jaw. In both species the bone still helps control feeding. Is this bone and skeletal morphology a homology? a. Yes, it is a homology b. No, it is not a homology c. Not enough information to tell d. The answer depends on the specific diet of each species
- Which of the following is NOT a feature associated with bipedalism? O The legs are longer than the arms. The foramen magnum is centrally located at the base of the skull, rather than posteriorly. O The scapula and clavicle are oriented more posteriorly. O The pelvic bones are oriented more superiorly (upward) than anteriorly (outward). d. The foot is flatter and the big toe less dexterous. O The tarsals are larger and the big toe is not opposable.A human's arm, a cat's front leg, a dolphin's front flipper, and a bat's wing _____ a. are used in similar ways b. have similar kinds of bones c. share many similarities with insect wings and jellyfish tentacles d. have nothing in common4. Bone probably first evolved to Choose a or b a. provide fish with jaws in order to be fearful predators. b. store calcium to provide strong muscle power when released to the bloodstream. 5. The earliest tetrapods first emerged from shallow water habitats Choose a or b a. around marine (salt water) coastlines. b. in freshwater swampy areas.
- A human forearm, a horse's front leg, a bat's wing, and a porpoise's flipper have similar bone structure. What conclusions can we draw from the similarities in bone structure between these mammals? a. Such homologies do not exist in other areas of the vertebrate skeleton. b. Similarities among vertebrate forelimbs suggest they evolved from a common ancestor. c. Similarities among vertebrate forelimbs suggest they have evolved convergently. d. The anatomy of the vertebrate forelimb is not currently undergoing natural selection. e. Differences among vertebrate forelimbs suggest that they evolved independently.Both the calcaneus and the first toe of bipeds are relatively ____ in comparison to the rest of the foot when compared to the feet in in other primates/ a. more gracile b. more diminutive c. short d. largeThe bones that make up the forelimbs of monkeys, cats, whales, and birds are similar. of the following statements best supports the evolutionary relationship of these animals? Which A The animals share a common ancestry but have adapted to different environments. B The animals have different ancestries but have adapted to similar environments. C The animals at one time lived in different environments but now share an environment. D The animals use their forelimbs for identieal activities but live in different environments.
- 11. Vestigial structures are body parts that seemingly have no purpose or function. They once did, but somewhere along the way they lost their functions and are now basically useless. The existence of vestigial structures is on of the strongest evidences of evolution. Which of the following is NOT an example of vestigial structure? * a. Coccyx from the lower portion of the vertebra of human. b. Appendix is a narrow tube that extends from cecum. c. Hair like projections in the nose are called vibrissae. d. Body hair on the chest of man. 12. Rice is a staple food in the Philippines. There are various type of rice in the country, and Filipinos call them by local names such as laon, wagwag, sinandomeng, and angelica. These are some of the different varieties of the rice plant with the scientific name Oryza sativa. yet they all differ. Human intervention can change organism into different or…Whale 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.Classic Neanderthal limb bones suggest that: A. the Neanderthals probably had limited manual dexterity, which probably accounts for the crudeness of Mousterian (= Middle Paleolithic) stone tools. B. even Neanderthal children had difficulty walking erect. C. the Neanderthals were stocky, heavily muscled people. D. the Neanderthals averaged over six feet tall. E. the Neanderthals had apelike limb proportions, including exceptionally long arms.