Campbell Biology:conc.(ll)-w/access
9th Edition
ISBN: 9780134784427
Author: Reece
Publisher: PEARSON
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Chapter 37, Problem 13TYK
SCIENTIFIC THINKING An ecologist studying plants in the desert performed the following experiment. She staked out two identical plots, which included a few sagebrush plants and numerous small, annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one of the plots with a fence to keep out kangaroo rats, the most common grain-eaters of the area. After two years, to her surprise, four of the wildflower species were no longer present in the fenced plot, but one species had increased dramatically. The control plot had not changed. Using the principles of ecology, propose a hypothesis to explain her results. What additional evidence would support your hypothesis?
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An ecologist studying plants in the desert performed the following experiment. She staked out two identical plots, which included a few sagebrush plants and numerous small, annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one of the plots with a fence to keep out kangaroo rats, the most common grain-eaters of the area. After two years, to her surprise, four of the wildflower species were no longer present in the fenced plot, but one species had increased dramatically. The control plot had not changed. Using the principles of ecology, propose a hypothesis to explain her results. What additional evidence would support your hypothesis?
SCIENTIFIC INQUIRY An ecologist studying desert plantsperformed the following experiment. She staked out twoidentical plots, containing sagebrush plants and small annualwildflowers. She found the same five wildflower species inroughly equal numbers on both plots. She then enclosed oneplot with a fence to keep out kangaroo rats, the most commongrain-eaters of the area. After two years, four of the wildflowerspecies were no longer present in the fenced plot, but onespecies had become much more abundant. The control plothad not changed in species diversity. Using the principles ofcommunity ecology, propose a hypothesis to explain her results.What additional evidence would support your hypothesis?
Ernie's school has three greenhouses, located in three parts of the school. Ernie notices that the plants in one
greenhouses are smaller than the same species in the other greenhouses. Ernie's biology teacher says she has
been having a problem recently with growing plants in this particular greenhouse. Ernie's lab group decides to
investigate factors such as light levels, temperature, and soil nutrients in the three greenhouses. They find that
these are the same for all the rooms. What additional factors would you suggest testing for, and how would
each of these factors affect the growth of plants?
20
Chapter 37 Solutions
Campbell Biology:conc.(ll)-w/access
Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Which of the following groups is (are) absolutely...Ch. 37 - Prob. 4TYKCh. 37 - Prob. 5TYKCh. 37 - Prob. 6TYKCh. 37 - The open ocean and tropical rain forests...Ch. 37 - Prob. 8TYKCh. 37 - Prob. 9TYKCh. 37 - Prob. 10TYK
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