Name ID: A 66. During the time of Pangaca, an ancestor of modern crocodiles inha
ID: 268688 • Letter: N
Question
Name ID: A 66. During the time of Pangaca, an ancestor of modern crocodiles inhabited the region marked by the star in this map (left in the following figure). Early Jurassic (200 mya), shortly after supercontinent Pangaea began to drift apart. Continents in their present locations. Where would you expect to find fossils of this animal today (the map on the right)? a. Northern Hemisphere b. c. Africa d. Antarctica on every continent changing regional climate reduction of mutation rates in all organisms most recent mass extinction, which occurred during the Cretaccous period, may have been caused by extra beat from the sun 67. Continental drift has played a role in all of the following except a c. d. promoting speciation 68. The the dinosaurs an asteroid hitting Earth C. a. d. b. the pull of the moon on Earth 69. Which of the following does NOT cad to adaptive radiation? a. mass extinction b. adaptations that allow an organism to use its enviroament in new ways migration of a species into a new environment with a number of free ecological niches c. d. a species living in a habitat to which it is well adapted Which of the following has NOT been proposed as a possible cause of mass extinctions? -70. c. massive volcanic eruptions d. changes in sea levels a. climate change b. a very large carthquake Recent research in developmental biology has shown that the body plans of organisms may be varied as a result of a. how and when a particular gene is expressed in the developing embryo b. the exchange of genetic material between homologous chromosomes c. genes that exhibit sex linkage d. adaptive radiation 71.Explanation / Answer
66. C. Africa
before breaking Africa and other continents were part of supercontinent pangea. the star is located at place is now Africa.
67. C. reduction in mutation rates in all organisms
continental drift started with tectonic movements resulting in movement of continents thus have played role in climate change, mass extictions and speciations.
68. D. an asteroid hitting on earth might have caused the extinction is claimed by many researchers.
69. D. a species living in a known habitat to which it is well adapted does not undergo adaptive radiation which is a phenomena in which species adapt to changing environment by developing new features important for their survival.
70. D. mass extinctions by sea level changes have not been proposed yet. though new studies suggest it may have impact on mass extinctions but not proposed.
71. D. Adaptive radiation is thought to be playing important role in morphological development.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.