Laboratory practice
- 1. Laboratory Practice Effect of chemical contaminants on the germination of seeds
- 2. Effect of chemical contaminants on the germination of seeds • Material • Petri plates • Sal • vinegar • then d'avet • test • dropper
- 3. Effect of chemical contaminants on the germination of seeds • Procedure: 1. We will germinate in petri dishes d'anet then irrigated with water and mineral water with different concentrations of salt or vinegar.
- 4. Effect of chemical contaminants on the germination of seeds • 2. Steps • Each capsule stuck a label with the name of the group of students, and a number. each capsule will put blotter at the base, two layers thick. • 5 d'anet will then spread around each capsule.
- 5. Effect of chemical contaminants on the germination of seeds • Will 3 ml of liquid water in each capsule as follows: • Regain 1 capsule with water, watered water • Regain 2 capsule with water contaminated salt 1g / ml contaminated water and vinegar watered to 50% • 3 capsule will water contaminated with salt water to 2g / ml contaminated water and vinegar watered to 75% • Capsule 4 watered salt contaminated water to 3.5 g / ml and vinegar watered pure 100%
- 6. Effect of chemical contaminants on the germination of seeds • Save capsules protected from light, separating two different drawers that contain salt that contain vinegar. • Very important: will be watering at least 2 times per week using the dissolution if the paper is dry, so that the paper remains moist but not fully floating water. Also will be observing and then scored on a grill amount of seeds that have germinated.
- 7. Effect of chemical contaminants on the germination of seeds • Questions and Comments: • Data collection: • Should be performed every Monday, Wednesday and Friday for the duration of practice: six observations following the registration form:
- 8. Effect of chemical contaminants on the germination of seeds Salt Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Capsule 1 Capsule 2 Capsule3 Capsule 4
- 9. Effect of chemical contaminants on the germination of seeds Vinegar Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Capsule 1 Capsule 2 Capsule3 Capsule 4
- 10. Effect of chemical contaminants on the germination of seeds • At the end of the observations we di the analysis of the data. • Ratings
- 11. Effect of chemical contaminants on the germination of seeds
- 12. Effect of chemical contaminants on the germination of seeds
- 13. Effect of chemical contaminants on the germination of seeds
- 14. Effect of chemical contaminants on the germination of seeds
- 15. Effect of chemical contaminants on the germination of seeds