When investigating the conditions necessary for seed germination, describe how you:
1 - Leaving Cert Biology - Question 9(b) - 2017
Question 9(b)
When investigating the conditions necessary for seed germination, describe how you:
1. Provided an oxygen-free environment.
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Worked Solution & Example Answer:When investigating the conditions necessary for seed germination, describe how you:
1 - Leaving Cert Biology - Question 9(b) - 2017
Step 1
Provided an oxygen-free environment.
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Answer
To provide an oxygen-free environment, I used an anaerobic jar or a boiled water container that had been cooled or was covered with oil. This method effectively creates conditions devoid of oxygen, which is essential for certain types of seed germination experiments.
Step 2
Determined that germination had taken place.
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Answer
To determine whether germination had taken place, I observed the development of radicles (roots) or plumes (shoots). The presence of these structures indicates that the seeds have successfully germinated.
Step 3
How did you prepare the section?
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To prepare the transverse section of the dicotyledonous stem, I cut a thin section from the stem. Additionally, I added water or a dye to enhance visibility under the microscope.
Step 4
Why is a coverslip used?
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A coverslip is used to prevent the cells from drying out and to protect them during examination. It also helps in keeping the sample in place and makes it easier to observe the specimen under the microscope.
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