|I think of the first two sentences
as an introduction to the introduction
|The end of this section should
summarize what your experiment will look like.
|Notice that the tense of this section
is consistent throughout. (2nd person present)
|All amounts and times are specified
|Units are apparent (hours and #
|Borders are created to give a polished
tutorial is designed to aid you all year long in writing lab
reports, one of the most important parts of your grade!
The sample report below
is an “A” report.
Does your report look like this? You may select any heading
to see a list of common errors made in that given section.
MUSTARD SEED GERMINATION LAB
all sections have headings that stand out
What effect does the amount of water given to seeds have on the rate
of seed germination?
Notice that the report is single spaced
with larger spacing between sections for a neat clean look.
Most plants start out life as a seed. In order to germinate
(or sprout) seeds need a supply of water in addition to other nutrients.
lab the effect of varying amounts of water on seed germination will be
Mustard seeds will be used for this experiment mainly due to their small
size. A number of seeds will be placed in two beakers containing different
amounts of water. The beakers will be monitored over three days in order
to reach a conclusion.
1. Place 50 mustard seeds in each of two small beakers.
2. Label one beaker FIVE and the other beaker THIRTY.
3. Using a graduated cylinder pour 5 mL of water into the beaker labeled
4. Using a graduated cylinder pour 30 mL of water into the beaker labeled
5. Cover each beaker with a lid.
6. Set the beakers aside for 24 hours.
7. After 24 hours count the number of seeds in each beaker and record.
8. Repeat Step 7 after 48 hours from initial set-up and again after 72
# SEEDS SPROUTED
5 mL WATER
# SEEDS SPROUTED
30 mL WATER
The effect of water on seed germination is that more water enhances the
rate of germination. Although all the data are not in agreement this
is the best conclusion that can be reached. In all likelihood it takes
some time before this effect is realized. In this lab seeds were monitored
for germination at three different intervals. As shown in Table 1 the
beaker with more water had a greater amount of seeds germinate in two
out of the three intervals. Also, the greatest difference was seen in
the last interval where the beaker with more water had almost double
the number of seeds germinate. Even though more seeds sprouted at the
24 hr period in the 30mL beaker this is too small a sample to make a
good conclusion (2 to 3). In the 48 hr period more seeds germinated in
the 5mL beaker, but this difference was also slight (12 to 10). My conclusion
is based primarily on the 72 hr measurement, which shows a large difference
between results (19 to 35). Most likely time also plays an important
role in determining the rate of germination. If this lab was extended
to 96 hrs my conclusion would probably be supported by that data as well.