Assignment: 11/8/21 Transpiration Lab Day 5

AP BIOLOGY-A
2021-11-07T23:37:57Z

Due: Nov 8, 2021 by 11:59pm

Last day for collecting data. Before you clean up your plants and throw things away we will need to normalize the transpiration data. There are a few ways to do this: 1. could be to divide the mass change by the total surface area which would control for plants having different surface areas. The downside of this is it is time consuming to calculate surface area of each plant and hard to do accurately. 2. the other method is to measure the mass of just the plant without the soil and then divide the mass change by the total plant mass. This will correct for plants being different sizes and is faster to figure out, just cut off the plant and take the mass of it.

Some things that need to happen today:

Take any pictures of your experiment that you might want to use in your screencast.

Record the mass of all plants.

Record the environmental conditions for each treatment.

Cut each plant off at the soil surface. Measure and record the mass of each plant.

Put away all probeware used to monitor environmental conditions.

Transfer any data files from Labquest II unit onto your Chromebook.

Throw away all pots, soil and plants. Clean up your lab station.

Clean up any other lab apparatus that was used during this lab.

Begin analysis of your data: means, std dev, std error, graphs. (Always remember the question that you were trying to answer.)

Below, give me a sentence or two summarizing your first impressions of your data.

Last day for collecting data. Before you clean up your plants and throw things away we will need to normalize the transpiration data. There are a few ways to do this: 1. could be to divide the mass change by the total surface area which would control for plants having different surface areas. The downside of this is it is time consuming to calculate surface area of each plant and hard to do accurately. 2. the other method is to measure the mass of just the plant without the soil and then divide the mass change by the total plant mass. This will correct for plants being different sizes and is faster to figure out, just cut off the plant and take the mass of it.

Some things that need to happen today:

Take any pictures of your experiment that you might want to use in your screencast.

Record the mass of all plants.

Record the environmental conditions for each treatment.

Cut each plant off at the soil surface. Measure and record the mass of each plant.

Put away all probeware used to monitor environmental conditions.

Transfer any data files from Labquest II unit onto your Chromebook.

Throw away all pots, soil and plants. Clean up your lab station.

Clean up any other lab apparatus that was used during this lab.

Begin analysis of your data: means, std dev, std error, graphs. (Always remember the question that you were trying to answer.)

Below, give me a sentence or two summarizing your first impressions of your data.