Duckweed Lab Report
The common duckweed also known as Lemna is often found in ponds, wetlands, and occasionally lakes. Duckweed is a very small, light green free-floating seed bearing plant. (aquaplant.com) Duckweed is known to take over the source of water it is in, in little time. It is forceful and can mix with other plants. The bodies of water that duckweed is mostly found in do not have waves or a strong current. They are typically only in still bodies of water although they can be found elsewhere. They are found around the globe and are the smallest flowering plant. (mobot)
The population growth of duckweed is unlimited per the lab manual.(Bluedoor) If there is no competition in the water, the growth can be unlimited. The population will have favorable …show more content…
We had four different stations set up throughout the length of this lab. Low light with low nutrient water, low light with high nutrient water, high light with low nutrient water, and high light with high nutrient water
The procedure of this experiment has 6 steps. The first step is to work in groups of four, or those at your lab table. Each group will prepare the four experimental treatments using clear plastic cup for each treatment. Label your four cups with each of the treatments listed above. Secondly, add 200 mL of the appropriate solutions. The nutrient water should be provided for you in large jugs. Mark the liquid with a small horizontal line to provide a refill level guide. Next add 10 thalli of lemna into each cup. Select healthy individuals of similar sizes for all of your cups. Try to avoid injuries to the plant when placing them into each cup. Record the number of thalli, 10 for the first week, and the number of fronds and write them in week 0. Place the high light treatment cups under the fluorescent lights on the top shelf. Place the low light treatment cups on a separate rack without lights. Lastly, you should record your number of thalli and fronds in each cup into the table of your lab manual. Each week you should refill the cups with the appropriate treated water to the 200 mL line drawn on your cup. Make notes of your lemna as they grow each week, talk about the growth and color and remember to write down the number weekly in your lab
The population growth of duckweed is unlimited per the lab manual.(Bluedoor) If there is no competition in the water, the growth can be unlimited. The population will have favorable …show more content…
We had four different stations set up throughout the length of this lab. Low light with low nutrient water, low light with high nutrient water, high light with low nutrient water, and high light with high nutrient water
The procedure of this experiment has 6 steps. The first step is to work in groups of four, or those at your lab table. Each group will prepare the four experimental treatments using clear plastic cup for each treatment. Label your four cups with each of the treatments listed above. Secondly, add 200 mL of the appropriate solutions. The nutrient water should be provided for you in large jugs. Mark the liquid with a small horizontal line to provide a refill level guide. Next add 10 thalli of lemna into each cup. Select healthy individuals of similar sizes for all of your cups. Try to avoid injuries to the plant when placing them into each cup. Record the number of thalli, 10 for the first week, and the number of fronds and write them in week 0. Place the high light treatment cups under the fluorescent lights on the top shelf. Place the low light treatment cups on a separate rack without lights. Lastly, you should record your number of thalli and fronds in each cup into the table of your lab manual. Each week you should refill the cups with the appropriate treated water to the 200 mL line drawn on your cup. Make notes of your lemna as they grow each week, talk about the growth and color and remember to write down the number weekly in your lab