Biology COE Task Version September Salmonberry Plants

Transcription

1 Salmonberry Plants Salmonberry plants can be found all along the Pacific coast. Salmonberry plants are a food source for many animals in Pacific coast ecosystems including hummingbirds, deer, and bear. Scientists conducted a field study to learn about salmonberry plant populations in different habitats in Washington. Field Study Question: How does the salmonberry plant population vary by habitat? Salmonberry Habitat COE Task Example [1]

2 Procedure: 1. Go to the salmonberry field study area. Record location, date, time, and temperature. 2. Choose a random location in the forest edge habitat. 3. Measure a 5-meter-by-5-meter plot and label as Plot Count the number of salmonberry plants in Plot 1. Record as Plot 1 for the forest edge habitat. 5. Repeat steps 2 through 4 for Plot 2 and Plot 3, choosing a new location in the forest edge habitat for each plot. 6. Repeat steps 1 through 5 for the stream bank and forest habitats. 7. Calculate and record the average number of salmonberry plants for each habitat. Data Collected: Location: Forest edge, stream bank, and forest habitats Date and Time: May 1, from 11:00 A.M. to 2:00 P.M. Temperature: 10 C to 15 C Salmonberry Habitat COE Task Example [2]

3 1. a) Describe a step in the field study procedure that ensured the results of the field study would be reliable. b) Describe a step in the field study procedure that ensured the results of the field study would be valid. Salmonberry Habitat COE Task Example [3]

4 c) The results from the field study are shown in the Habitat vs. Number of Salmonberry Plants table. Describe a scientific reason for the results in the forest edge habitat and a scientific reason for results in the forest habitat. In your description, be sure to: Describe a scientific reason for the results in the forest edge habitat. Describe a different scientific reason for the results in the forest habitat. Include data from the Habitat vs. Number of Salmonberry Plants table that supports each scientific reason. Forest edge habitat results: Forest habitat results: Salmonberry Habitat COE Task Example [4]

5 2 a) Salmonberry leaf cells contain 14 chromosomes. A plant produces many new cells as the plant grows. Describe the process that produces new cells in a plant. In your description, be sure to: Describe the process that causes the number of cells in a plant to increase. Identify the number of chromosomes in each plant cell at the beginning and at the end of the process. You may use words and/or labeled diagrams in your answer. Salmonberry Habitat COE Task Example [5]

6 b) Describe the relationships among amino acids, chromosomes, proteins, and genes in the cells of a salmonberry plant. c) Salmonberry plant roots absorb minerals by active transport. Describe the active transport process that allows substances to enter and exit cells. In your description be sure to: Describe the active transport process in terms of energy differences. Describe the active transport process in terms of concentration differences. d) Cellular respiration occurs in salmonberry plants. Describe two similarities between cellular respiration in salmonberry plants and the burning of gasoline. Salmonberry Habitat COE Task Example [6]

7 3 a) Carbon cycles through the forest edge habitat. Describe a path of carbon through the forest edge habitat. Include the atmosphere, salmonberry plants, and bears in the path. In your description, be sure to: Begin and end with carbon in the atmosphere. Identify the molecule that contains the carbon for each step in the path. Describe the roles of salmonberry plants and bears in the carbon cycle. You may use words and/or labeled diagrams in your answer. Salmonberry Habitat COE Task Example [7]

8 b) Blackberry plants are sometimes found in forest edge habitats along with salmonberry plants. Describe two factors that could limit the growth of plant populations in the forest edge habitat. In your description, be sure to: Identify two characteristics of the forest edge habitat. Describe how each characteristic is a factor that could limit populations of plants. One factor: Another factor: Salmonberry Habitat COE Task Example [8]

9 4 a) Some bears are getting into trash cans at campgrounds near the forest. The park rangers plan to trap and relocate these bears to solve the problem of these bears getting into the trash. Describe two constraints other than cost that park rangers could encounter while trapping and relocating these bears. In your description, be sure to: Identify two constraints on trapping and relocating these bears other than cost. Describe how each constraint is a limitation. One constraint: Another constraint: Salmonberry Habitat COE Task Example [9]

10 b) The population of a type of fish, rainbow trout, is decreasing in the stream flowing through the salmonberry habitat. Students want to increase the population of rainbow trout. Describe how to begin solving this problem. Be sure to describe the following stages in your design process: Research the Problem: Describe any scientific information needed to solve the problem and how to collect that information. Explore Ideas: Describe several possible solutions to the problem, including any useful scientific concepts. Problem: Increase the population of rainbow trout in the stream. Research the Problem: Explore Ideas: Salmonberry Habitat COE Task Example [10]