Final answer:
To prevent the scenario, wear gloves, grip the scalpel properly, and use a scalpel with a retractable blade. If an accident occurs, apply first aid and inform the teacher.
Step-by-step explanation:
To prevent the scenario in which a student gets seriously cut during an earthworm dissection, there are a few precautions that can be taken. First, the student should always wear gloves while handling sharp objects like scalpels. Second, the student should make sure to have a firm grip on the scalpel and keep their fingers away from the blade. Third, it is important to use a scalpel with a safety feature such as a retractable blade.
If an accident does occur and the student's finger gets cut, immediate response is necessary to minimize harm. The student should stop the activity and put pressure on the cut to stop bleeding. They should then wash the cut with soap and water, apply an antiseptic, and cover it with a clean bandage. Finally, the student should inform the teacher and seek medical attention if necessary.