1407 hcc exam 1 (1)

1407 hcc exam 1 (1) - Please do not write on the Exam BIOL...

Info iconThis preview shows pages 1–38. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Please do not write on the Exam! BIOL 1407 Houston Community College Exam 1 Instructor: A. Nesterovitch MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result." Which statement is most likely to be helpful in correcting this student's misconceptio n? Disuse of an organ may lead to its eventual disappearance. Only favorable adaptations have survival value. Overproduction of offspring leads to a struggle for survival. Spontaneous mutations can result in the appearance of new traits. Characteristics acquired during an organism's life are generally not passed on through genes. The following questions refer to Figure 22.1, which shows an outcrop of sedimentary rock whose strata are labeled A- D. Figure 22.1 2) Which stratum should contain the greatest proportion of extinct organisms? If "x" indicates the location of fossils of two closely related species, then fossils of their most- recent common ancestor are most likely to occur in which stratum? Which of the following must exist in a population before natural selection can act upon that population? Genetic variation among individuals Sexual reproduction Variation among individuals caused by environmental factors B and C only A, B, and C The following question refers to the evolutionary tree in Figure 22.2 . The tree's horizontal axis is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V —Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species. Figure 22.2 5) How many separate species, both extant and extinct, are depicted in this tree? 6 B) 4 C) 3 D) 5 E) 2 6) Of the following anatomical structures, which is homologous to the wing of a bird? Dorsal fin of a shark Hindlimb of a kangaroo Flipper of a cetacean Wing of a butterfly Tail fin of a flying fish 7) If two modern organisms are distantly related in an evolutionary sense, then one should expect that their chromosomes should be very similar. they live in very different habitats. they should be members of the same genus. they shared a common ancestor relatively recently. they should share fewer homologous structures than two more closely related organisms. 8) Which of the...
View Full Document

This note was uploaded on 02/07/2011 for the course BIOS 101 taught by Professor Matthews during the Spring '11 term at DeVry Austin.

Page1 / 509

1407 hcc exam 1 (1) - Please do not write on the Exam BIOL...

This preview shows document pages 1 - 38. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online