2004 Lab Rowe (22) - Code 22 - 04W page 1 Questions 1 to...

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Code 22 - 04W page 1 Questions 1 to 23: Laboratory Questions 1. Which statement is FALSE ? a. Differences between populations are not always a result of natural selection. b. An adaptation is a trait that improves an organisms chances of producing offspring. c. Mutations are the only source of new traits and new combinations of traits in populations. d. Charles Darwin proposed natural selection as a mechanism for the process of adaptation. e. Not all observed traits are adaptations that enhance fitness. 2. A population of beetles that is yellow in colour lives on vegetation that is also yellow in colour. A biologist wants to know whether or not the beetles’ yellow colouration is an adaptation for camouflage. She reads several articles about this beetle species and learns (1) that they are always yellow in colour, and (2) that most populations live on green vegetation. What is the most reasonable conclusion that the biologist can draw from this information? a. The beetles’ colouration is an adaptation for camouflage. b. The beetles’ colouration is not an adaptation for camouflage. c. The beetles that live on green vegetation are in the process of evolving yellow colouration. d. The beetles that live on yellow vegetation are in the process of evolving green colouration. e. The ancestors of this beetle species were green in colour. 3. Which insects utilize different habitats and feed on different sources of food throughout the different stages in their life cycle? a. Cockroaches, beetles, and flies. b. Waterstriders, Praying Mantids, and Giant Water Bugs. c. Aphids, waterstriders, and butterflies. d. Butterflies, silkworm moths, and beetles. e. Aphids, cockroaches, waterstriders. 4. Which of the following was a major event in the evolution of gymnosperms and angiosperms? a. Layers of tissue to protect the embryo within the seed, as found in gymnosperms. b. A conspicuous green gametophyte generation. c. Sperm that are motile and can swim to the egg cell. d. Freeing fertilization from the requirement for liquid water. e. The presence of vascular tissue.
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Code 22 - 04W page 2 5. A student in BIO150 sets up an experiment to test the effect of temperature on isopods, using the same experimental apparatus that you used in Lab 2. The bottom of one dish contains warm water; the other dish contains cold water. Both petri dishes are covered completely with black paper. She places 10 isopods in each petri dish. At the end of 10 minutes, all of the isopods are on the screen in the petri dish above the warm water. Which conclusion is most CORRECT ? a. This suggests a kinesis because the isopods moved towards the cold. b. This suggests a kinesis because the isopods moved away from the warmth. c. This suggests a taxis because the isopods moved more quickly in the warmth.
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This note was uploaded on 11/24/2010 for the course BIO BIO150Y1Y taught by Professor Barret,thomson during the Spring '07 term at University of Toronto- Toronto.

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2004 Lab Rowe (22) - Code 22 - 04W page 1 Questions 1 to...

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