A new Unit begins: Evolution. Don't forget to read the unit in the text beginning on page 71. I will be updating the Evolution link as we go along so continue to look back at this. Here are the questions:
Question #1: Evolution is the process of the
(1) development of one-celled organisms from mammals
(2) change in species over long periods of time
(3) embryonic development of modern humans
(4) changing energy flow in food web
Question #2: Which phrase best defines evolution?
(1)an adaptation of an organism to its environment
(2) a sudden replacement of one community by another
(3) the isolation of organisms from each other for many years
(4) a process of change in species over a period of time
Question #3: the study of fossils has allowed scientists to
(1) describe past environments and the history of life
(2) study present ocean temperatures at different depths
(3) analyze the chemical composition of sedimentary rocks and minerals
(4) Describe the details of the process by which life began on earth
question #4 The diagram below shows undisturbed sedimentary strata at the bottom of an ocean. The fossils found in layer B resemble the fossils found in layer A. This similarity suggests that
(1) the fossils in layer B were formed before the fossils in layer A
(2) modern forms of life may have evolved from earlier forms of life
(3) vertebrate fossils are only found in sediments
(4) the fossils in layer A must be more complex than those in layer B
Question #5: Darwin's theory of evolution is based on the concept of
(1) use and disuse
(2) mutations
(3) natural selection
(4) hybridization
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