2009-Exam-1-1%20---%20ANSWERS

2009-Exam-1-1%20---%20ANSWERS - GLY 309 BIO 309 Ecology Oct...

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GLY 309 / BIO 309 EXAM 1- Version 1 Ecology Oct. 6, 2009 NAME: . PERSON NUMBER: . SIGNATURE: 1. PRINT YOUR NAME, PERSON NUMBER AND EXAM VERSION ON THE MACHINE GRADING FORM . 2. PRINT YOUR NAME AND STUDENT NUMBER AND SIGN YOUR NAME ON THIS COVER PAGE 3. WRITE YOUR PERSON NUMBER ON EVERY PAGE OF THE EXAM . WE WILL CHECK IDs WHEN YOU TURN IN THE EXAM. PLEASE HAVE YOUR UB ID OUT WHEN YOU TURN IN YOUR EXAM. GRAPHICS AND PROGRAMMABLE CALCULATORS, AS WELL AS CALCULATORS ON CELL PHONES, PALM PILOTS AND SIMILAR DEVICES ARE NOT PERMITTED. Use pencil to answer questions on the bubble sheet. Answer all other questions using only the space provided after each question. Some questions are similar but not identical to past exam and problem set questions. Read each question and data set carefully. The exam is worth 90 pts. The multiple choice questions are worth 3 points each. The value of the other questions are indicated in brackets. Exam grades and an answer key will be posted on UBLearns.
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Person Number _____________________ 309 Exam 1 Version 1 - 1 1. The increase in frequency of a seemingly new trait in a population under selection is usually due to a. The transfer of genes from a different species b. Mutation c. Selection for an existing variant already in the population d. Migration of individuals with the trait into the population e. None of the above 2. Which of the following are resources for plants? 1. atmospheric oxygen 2. soil nitrogen levels 3. soil temperature 4. soil water content 5. total salt content of the soil 6. soil phosphate 7. pH 8. atmospheric nitrogen (N 2 ) a. 1,2,3,4,5,6,7,8 b. 1,7,8 c. 2,3,4,6 d. 2,4,6 e. 1,3,5,7,8 3. An environmental factor can be considered to be a “limiting factor” for a population if a. It is an essential resource b. If population growth changes when the factor is altered c. If the population does not affect the factor d. If r=0.0 for the population e. Any of the above
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Person Number _____________________ 309 Exam 1 Version 1 - 1 Two species in a community are monitored over four years and the intrinsic rate of increase determined for each species. Data from multiple years are presented simply to give you a sense of the degree of variation in the measurement of population growth. The species were also grown in experimental settings in a series of experiments in which they were maintained in isolation or in combination with each other. Population growth rates are listed below. ² ³ ´ µ ² ! ¸ ³ ¹ ! º µ ¸ » ± ! ² ½ ¹ ! º µ ¸ » ± ! ¾ ± ! !! CO-OCCURRING TOGETHER IN ISOLATION POPULATIONS AN EXPERIMENT IN AN EXPERIMENT SPECIES! A B A B A B YEAR! 1990 .05 .18 .14 .33 .11 .23 1991 .09 .17 .15 .30 .13 .25 1992 .10 .20 .16 .28 .10 .26 1993 .09 .18 .16 .31 .09 .24 4. Based on the data the interaction in the experimental setting was a. Competition b. Mututalism c. A is a predator of B d. B is a predator of A e. Commensalism.
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This note was uploaded on 10/20/2010 for the course BIO 213 taught by Professor Lo during the Winter '10 term at American International.

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2009-Exam-1-1%20---%20ANSWERS - GLY 309 BIO 309 Ecology Oct...

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