Coyne College Seed Germination Lab Report

User Generated

Fcvevgyvsr

Science

Coyne College

Description

  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

Unformatted Attachment Preview

Name Prof. Date 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 ©eScience Labs, 2016 Experiment 1: Effects of pH on Radish Seed Germination Natural soil pH depends on the parent rock material from which it was formed and processes, such as climate. Soil pH is a measure of the acidity or alkalinity of the soil. Acidic soils are considered to have a pH of 5.0 or lower, whereas 10.0 or above is considered a strong basic or alkaline soil. The pH of soil affects the solubility of nutrients in soil water. It therefore also affects the amount of nutrients available for plant uptake. Different nutrients are available under differing pH conditions. In this experiment, we will look at the effect of pH on the germination and growth rate of radish seeds to determine the range of pH tolerance for the seed. Acidic or basic water will be used to stimulate acidity or alkalinity in soil. Materials 2 mL 4.5% Acetic Acid (Vinegar), C2H4O2 Permanent Marker (3) 5 cm Petri Dishes 3 pH Test Strips Radish Seed Packet Ruler 2 mL 15% Saturated Sodium Bicarbonate (Baking Soda) Solution, NaHCO3 *Paper Towel Sheets (cut to fit into the petri dish) *Scissors *Sunny Location *Water *You Must Provide Procedure 1. Use the permanent marker to label the top of each of the three petri dishes as Acetic Acid, Sodium Bicarbonate, or Water. 2. Carefully cut three small circles from the paper towel sheets. The circles should comfortably fit within the bottom of the petri dish. 3. Place the circles in the dishes and wet them with approximately 2 mL of the respective solution (acetic acid, sodium bicarbonate, or water). ©eScience Labs, 2016 4. Gently press the reaction pad of three pH test strips onto the wet paper towels. Record your data in Table 1. 5. Arrange 10 radish seeds on each paper towel in each petri dish. Make sure the seeds have space and are not touching. Then, place the top of the petri dish on the bottom. 6. Create a hypothesis regarding which environment will provide the heartiest radish seed growth. Be sure to indicate why you believe this will be true using scientific reasoning. Record your hypothesis in the post-lab questions. 7. Place the petri dishes in a sunny or well-lit, warm place. Be sure to keep the paper towels moist for the length of the experiment with the appropriate solution if any of the towels dry out. 8. Observe the seeds daily for seven days, and record the number of seeds that germinate in Table 1. Note when the seeds crack and roots or shoots emerge. On the seventh day, record the lengths of radish seed sprouts (mm or cm). Table 1: pH and Radish Seed Germination Stage/Day Observations Acetic Acid Sodium Bicarbonate Water Initial pH 1 2 3 4 5 6 7 ©eScience Labs, 2016 Post-Lab Questions 1. Record your hypothesis from Step 6 here: 2. 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.). 3. Was there any noticeable effect on the germination rate of the radish seeds as a result of the pH? Compare and contrast the growth rate for the control with the alkaline and acidic solutions. 4. According to your results would you say that the radish has a broad pH tolerance? Why or why not? Use your data to support your answer. 5. Knowing that acid rain has a pH of 2-3 would you conclude that crop species with a narrow soil pH range are in trouble? Is acid rain a problem for plant species and crops? 6. Research and briefly describe a real world example about how acid rain affect plants. Be sure to demonstrate how pH contributes to the outcome, and proposed solutions (if any). Descriptions should be approximately 2 3 paragraphs. Include at least three citations (use APA formatting). ©eScience Labs, 2016
Purchase answer to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Hello, please find the attached lab. Please let me know if you have any question. Thanks and Goodbye

Name
Prof.
Date

Pre-Lab Questions
1. Would you expect endangered species to be more frequently
generalists or specialists? Explain your answer.
I would expect endangered species to be more frequently specialists because being a
specialists the animals need specific food, weather or climate to survive. If those things
are not around they will end up dying. If they were generalists they would be able to
adapt to the changes in their environment.
2. How does temperature affect water availability in an ecosystem?
The temperature affects water availability in the ecosystem because of evaporation.
When it is to hot the water evaporates and may not replenish with rainfall. With warm but
not temperatures then the water will evaporate but it will rain more often.
3. Choose a species and describe some adaptations that species
developed that allow them to survive in their native habitat
A species that would be considered a generalist is a raccoon, which can survive in many
different environments and survives by eating a wide variety of foods. A specialist
example would be a koala. The koala lives in the hot temperatures of Australia and
survives solely off of eucalyptus leaves, which is abundant in its habitat.

©eScience Labs, 2016

Experiment 1: Effects of pH on Radish Seed Germination
Natural soil pH depends on the parent rock material from which it was formed
and processes, such as climate. Soil pH is a measure of the acidity or alkalinity
of the soil. Acidic soils are considered to have a pH of 5.0 o...


Anonymous
Really helped me to better understand my coursework. Super recommended.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Related Tags