Title:
See how nitrogen effects water habitats. eutrophication Aims:
To see what the effect of nitrogen has on aqcuatic plant growth
Hypothesis:
I think that the duckweed with some nitrogen will grow the best. Not full stock or half stock but around quarter or eith stock. This is because I think that to much nitrogen will be deadly for the plant but with some nitrogen it will grow better than duckweed without any nitrogen.
Method:
We took the top off of the coke bottles
We cleaned the coke bottles to ensure nothing would interfere with the investigation
We added river water to the coke bottles
Added 1 tablespoon of soil to each bottle
We then added our nutrient solution for nitrogen we used urea
We added 1/10 for the full …show more content…
On the 2nd day of recording there was no growth in the duckweed showing that duckweed cant grow after 3 days in no stock water. On the 3rd day of recording the duckweed had a huge jump in growth as it was now at 13 duckweed plants. This shows that duckweed can grow in no stock water and has started off huge by gaining 8 duckweed plants. On the 4th day of recording there was 17 duckweed plants. Showing that duckweed can grow well with no nitrogen added. On the 5th day of recording the duckweed was at 18 plants. The growth has slowed dramatically to only 1 plant being added. On the 6th day of recording the duckweed had grown to 20 plants. This shows that duckweed can grow in water with no added nitrogen. The duckweed is still growing but a lot slower than at the start of the investigation. On the 7th day of recording the duckweed had grown to 22. This shows that duckweed can grow successfully in water with no added nitrogen. It also had a huge start with growing 8 plants in 3 days but then slowed down dramatically to only adding one or two duckweed plants each …show more content…
On the 2nd day recording the duckweed still had 5 duckweed plants. This was probably because the duckweed wouldn’t have grown straight away as it has only just been put in a new environment and would take some time to adapt so it did no grow in the first 3 days. On the 3rd day of recording the duckweed had grown to 8 plants. This may have been because the duckweed has adapted to the new environment and has started to grow in the plentiful nitrogen in the water. On the 4th day of recording the duckweed had stayed at 8 plants. This may have been because the duckweed has taken as much nitrogen as it needs but now the water has to much nitrogen and is struggling to live. On the 5th day recording the the duckweed has grown to 9 showing that it can live in the half stock but is growing slowly and is struggling. On the 6th day of recording the duckweed has dropped to 7 plants. This is probably because the nitrogen is too much and is starting to kill off the duckweed as there is too much making the water deadly. On the 7th day of recording the duckweed had died completely in the ½ stock bottles. This was probably because there was too much nitrogen un the bottles so the duckweed plants slowly died as the water would have been too acidic and the plants would have
See how nitrogen effects water habitats. eutrophication Aims:
To see what the effect of nitrogen has on aqcuatic plant growth
Hypothesis:
I think that the duckweed with some nitrogen will grow the best. Not full stock or half stock but around quarter or eith stock. This is because I think that to much nitrogen will be deadly for the plant but with some nitrogen it will grow better than duckweed without any nitrogen.
Method:
We took the top off of the coke bottles
We cleaned the coke bottles to ensure nothing would interfere with the investigation
We added river water to the coke bottles
Added 1 tablespoon of soil to each bottle
We then added our nutrient solution for nitrogen we used urea
We added 1/10 for the full …show more content…
On the 2nd day of recording there was no growth in the duckweed showing that duckweed cant grow after 3 days in no stock water. On the 3rd day of recording the duckweed had a huge jump in growth as it was now at 13 duckweed plants. This shows that duckweed can grow in no stock water and has started off huge by gaining 8 duckweed plants. On the 4th day of recording there was 17 duckweed plants. Showing that duckweed can grow well with no nitrogen added. On the 5th day of recording the duckweed was at 18 plants. The growth has slowed dramatically to only 1 plant being added. On the 6th day of recording the duckweed had grown to 20 plants. This shows that duckweed can grow in water with no added nitrogen. The duckweed is still growing but a lot slower than at the start of the investigation. On the 7th day of recording the duckweed had grown to 22. This shows that duckweed can grow successfully in water with no added nitrogen. It also had a huge start with growing 8 plants in 3 days but then slowed down dramatically to only adding one or two duckweed plants each …show more content…
On the 2nd day recording the duckweed still had 5 duckweed plants. This was probably because the duckweed wouldn’t have grown straight away as it has only just been put in a new environment and would take some time to adapt so it did no grow in the first 3 days. On the 3rd day of recording the duckweed had grown to 8 plants. This may have been because the duckweed has adapted to the new environment and has started to grow in the plentiful nitrogen in the water. On the 4th day of recording the duckweed had stayed at 8 plants. This may have been because the duckweed has taken as much nitrogen as it needs but now the water has to much nitrogen and is struggling to live. On the 5th day recording the the duckweed has grown to 9 showing that it can live in the half stock but is growing slowly and is struggling. On the 6th day of recording the duckweed has dropped to 7 plants. This is probably because the nitrogen is too much and is starting to kill off the duckweed as there is too much making the water deadly. On the 7th day of recording the duckweed had died completely in the ½ stock bottles. This was probably because there was too much nitrogen un the bottles so the duckweed plants slowly died as the water would have been too acidic and the plants would have