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Virtual Garden Lab

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Megan Jempson

on 3 April 2014

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Transcript of Virtual Garden Lab

Chart A
Pansies
Megan Jempson
Wednesday, April 2, 2014
Vol XCIII, No. 311
Sunflowers
Objectives, Materials, and Hypothesis
Chart B

Virtual Garden Observation Data Chart
Objectives:
Identify patterns in plant growth under varying conditions: such as sunlight, gravity, water, and soil pH.
Predict outcomes of plant growth under multiple parameters.

Materials:
Virtual Garden Simulation from lesson
Lab Report Form

Hypothesis:
I believe that a low pH level, a water level at 3, and gravity would produce the best growth in the plants.
Virtual Garden Lab
Chart D
Virtual Garden Observation Data Chart
Chart C
Virtual Garden Observation Data Chart
Virtual Garden Observation Data Chart
Hydrangeas
Which row was the best placement for the pansies, hydrangeas, and sunflowers? Explain your answer.
The sunflowers grew best in the last row because they needed the majority of the sunlight. Then in the middle row were the Hydrangeas. They were best fit there due to well with warmer temperatures. Lastly, the Pansies were in the last row which was shaded by a tree. They grow best in indirect sunlight and cooler temperatures.

Describe the process of germination and plant growth you observed in the lab activity for a monocot plant. (Hint: Use data chart A to help with your description.) Describe the process of germination and plant growth you observed in the lab activity for a dicot plant.
The process of germination and plant growth was pretty remarkable. There was a big distinction in between the pansies and sunflowers being dicots and growing that way, while the hydrangeas grew their way as a monocot. They all did follow a similar growth pattern. The seeds all started to grow and then the roots all started to grow deeper into the ground. Then the seed hypocotyls started rising above the ground. The pansies and the sunflowers both had one big bulb while the hydrangeas just had several sprouts. Then the leaves on the pansies and sunflowers started to come out as they kept growing up. But once the hydrangea finished growing a smaller seed started growing in the middle of all the seed sprouts where the flower would come out.

Which of your plants was a dicot? Which was a monocot? How could you tell? (Hint: Refer to the lesson for differences in monocots and dicots.)
Pansies and Sunflowers are dicots while Hydrangeas are monocots. Hydrangeas are monocots because the way that they rise form the soil is different. They leaf doesn’t start to emerge once the sheath hits the light. It does not grow out until the sheath has risen very high up from the soil. Whereas the Pansies and Sunflower, being dicots, the hypocotyl lengthens until it reaches above the soil where the seed cotyledons go with it. Then as it straightens out, the leaves start to emerge between them.

What was the correct water level for germination? Why did this water level work best for all the plants in the garden?
The correct level for germination was at 2. It worked best for all of the flowers because it was right in the middle. It did not over water the plants just as how it did not under water them.

What water level did you select for plant growth during your first attempt? Describe the observations of your plants at this water level. Based on your data, was the level you picked the best choice for optimum growth?
During my first attempt I selected the water growth at 3. I thought that was suitable and it was in the middle so it would not provide too much or too little. In doing so, the Pansies did not take it well. The plant was a darker color and it had no flowers sprouted. The other two plants were lively and had several flowers. Therefore, the level that I picked at 3 was not best for the plants. I then changed the selection to level 2 and they all had no problem growing into beautiful flowers.

What pH level did you select for plant growth? Describe the observations of your plants at this pH level. Based on your data, was the level you picked the best choice for optimum growth?
I set the pH level for the plants at low. In low pH the only pansie flower that grew was yellow, the Hydrangeas were blue and purple, and the sunflower was yellow. By also seeing the pH being set at high, I think that the flowers had a better chance at growing. In the high pH, the multiple pansies were purple, the hydrangeas were pink, and the sunflower was yellow.

Describe your observations of plant growth in zero gravity. Can you provide possible reasons for the growth patterns? (Hint: Refer to tropisms in the lesson for ideas.)
When the gravity was set at 0, the plant growth changed drastically. Due to no gravity, the plants tried to grow in all different directions in an attempt to find the gravity. They tried to grow towards the source of the light and followed it. With no gravity, even the roots were growing in all sorts of ways. While with the gravity, the roots grew down straightly and the flowers grew normally. The way that the plants grew that way with gravity then without, is called Gravitropism.

Analysis Questions
Chart C measures the change in the flowers when the independent variable is the pH level. I set the level at low and these were my results.
For chart D, the independent variable was the gravity. For my experiment, I turned the gravity off.
For chart B, I had to change the water level given to the plants. I set the water level at 3, and the pansies did not handle it so well. The other two plants thrived just like normal.
For chart A, I just had to measure the growth of these three plants over 9 days. The water level was set at 2 and all of the plants grew wonderfully.
Conclusion Questions
In a real garden, which hormones would stimulate seed germination and plant growth?
In real life, gibberellins would be the hormones to stimulate seed germination and plant growth. They help with three ways in the plants. The first is by starting germination and promoting seed growth. Also, they stimulate the buds of the flowers to open along with the plant stem growth.
Based on your experiences with the Virtual Garden, how would you set up a real backyard garden? Describe what you learned about plant behavior in this lab that will help you cultivate a healthy garden.

I would create my garden just like in the virtual garden. The first row of pansies would be shaded by a tree, then the second for hydrangeas, and then third row sunflowers. I know that the proper level of water for each plant to thrive in growth is 2. Therefore, I would not over or under water them. I also know the behavior of the plant and even color of the flowers based on the pH level being high or low. I also know what the flowers will do if the gravitational pull is at zero.
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