Lab7:Ecological Interactions

Question # 00451320 Posted By: schoolbench Updated on: 12/28/2016 07:45 PM Due on: 12/30/2016
Subject Biology Topic Biochemistry Tutorials:
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Biology 102/103

Lab7:Ecological Interactions

INSTRUCTIONS:

· On your own and without assistance, complete this Lab7AnswerSheet electronically and submit it via the Assignments Folder by the date listedintheCourse Schedule (under Syllabus).

· To conduct your laboratory exercises, use the Laboratory Manuallocated under Course Content. Read the introduction and the directions for each exercise/experiment carefully before completing the exercises/experiments and answering the questions.

· Save your Lab7Answer Sheet in the following format: LastName_Lab7 (e.g., Smith_Lab7).

· You should submit your documentas a Word (.doc or .docx) or Rich Text Format (.rtf) file for best compatibility.


Pre-Lab Questions

1. Would you expect endangered species to be more frequently generalists or specialists? Explain your answer.

2. How does temperature affect water availability in an ecosystem?

3. Choose a species and describe some adaptations that species developed that allow them to survive in their native habitat.


Experiment 1: Effects of pH on Radish Seed Germination

Data Tables and Post-Lab Assessment

Table 1: pH and % Radish Seed Germination

Stage/Day Observations

Acetic Acid

Sodium Bicarbonate

Water

Initial pH

Day 1

Day 2

Day 3

Day 4

Day 5

Day 6

Day 7

Post-Lab Questions

1. Compare and construct a line graph based on the data from Table 1 in the space below. Place the day on the x axis, and the number of seeds germinated on the y axis. Be sure to include a title, label the x and y axes, and provide a legend describing which line corresponds to each plate (e.g., blue = acetic acid, green = sodium bicarbonate, etc…).

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