Welcome to Bronze: Photosynthesis
Beware procrastination and be sure to use your checklist as a guide on your journey.
Write Learning Goals:
I will investigate the relationship between photosynthesis and cellular respiration.
I will compare photosynthesis and cellular respiration.
I will investigate transpiration and structures of leaves.
I will investigate the relationship between photosynthesis and cellular respiration.
I will compare photosynthesis and cellular respiration.
I will investigate transpiration and structures of leaves.
Task 1
Brainstorm!
In your Book Creator or journal brainstorm the answer to the following question.
How do you end up with a Giant Sequoia from a seed so small?
In your Book Creator or journal brainstorm the answer to the following question.
How do you end up with a Giant Sequoia from a seed so small?
Task 2
How does CO2 get into a plant? What force allows water to flow up a plant against gravity? You will complete two mini labs today to find out.
Be sure to take pictures for your book creator.
Lab 1
1. Place equal amounts of water in your two centrifuge tubes.
2. Place the stalk of each leaf in your tubes.
3. Wrap tape around the stalk and the top of the centrifuge tube to make as air tight as possible
4. Place foil fully surrounding one of your two leaves.
5. Take an initial mass of each of your leaf set-ups
6. Place under the grow light by the goggle cabinet.
7. After 25 minutes take a second mass measurement. While you wait perform lab 2 below.
8. Find the difference of your initial and final measurements between your two leaves.
Lab 2
1. Place a piece of one of your leaves, upside down on a microscope slide. (the piece should be slightly smaller than the coverslip)
2. Draw what you observe. (hint: you are looking for small opening on the leaf that look like lips)
3. These structures are called stomata.
4. Take a count of how many stomata you see.
5. Flip the leaf over and do the same as above.
6. Research transpiration and stomata and see how the two are related.
Analysis
1. Was there a difference between your two leaves in terms of change in mass?
2. If there was difference, why?
3. What process was stopped that allowed the change in mass?
4. What is the role of stomata in the process of transpiration?
5. How does CO2 get into a plant?
6. What process helps water to flow against gravity and up the xylem of a plant?
Predict
1. Based on what you know about osmosis (diffusion of water), what would you predict about the rate of transpiration of plants in a humid environment vs. a dry environment?
2. What type of structural adaptations do you see in plants in a dry environment that might help control the rate of transpiration?
Be sure to take pictures for your book creator.
Lab 1
1. Place equal amounts of water in your two centrifuge tubes.
2. Place the stalk of each leaf in your tubes.
3. Wrap tape around the stalk and the top of the centrifuge tube to make as air tight as possible
4. Place foil fully surrounding one of your two leaves.
5. Take an initial mass of each of your leaf set-ups
6. Place under the grow light by the goggle cabinet.
7. After 25 minutes take a second mass measurement. While you wait perform lab 2 below.
8. Find the difference of your initial and final measurements between your two leaves.
Lab 2
1. Place a piece of one of your leaves, upside down on a microscope slide. (the piece should be slightly smaller than the coverslip)
2. Draw what you observe. (hint: you are looking for small opening on the leaf that look like lips)
3. These structures are called stomata.
4. Take a count of how many stomata you see.
5. Flip the leaf over and do the same as above.
6. Research transpiration and stomata and see how the two are related.
Analysis
1. Was there a difference between your two leaves in terms of change in mass?
2. If there was difference, why?
3. What process was stopped that allowed the change in mass?
4. What is the role of stomata in the process of transpiration?
5. How does CO2 get into a plant?
6. What process helps water to flow against gravity and up the xylem of a plant?
Predict
1. Based on what you know about osmosis (diffusion of water), what would you predict about the rate of transpiration of plants in a humid environment vs. a dry environment?
2. What type of structural adaptations do you see in plants in a dry environment that might help control the rate of transpiration?
Task 3
Watch this video. Do NOT maximize the video, you want be able to see the questions.
Thanks to the Amoeba Sisters for their video on Photosynthesis.
Thanks to the Amoeba Sisters for their video on Photosynthesis.
Task 4
How are cellular respiration and photosynthesis connected?
Click on the link below to complete the virtual lab to find out. Be sure to go to the Explore tab to get to the investigation.
Virtual Lab
Instructions for Lab
Thanks to TEA for the above resources.
Click on the link below to complete the virtual lab to find out. Be sure to go to the Explore tab to get to the investigation.
Virtual Lab
Instructions for Lab
Thanks to TEA for the above resources.
To Pass the Gauntlet...complete the following.
Compare the Light Dependent Reaction and the Calvin Cycle. Use the illustration below to assist you in your task.
Complete this comparison chart and answer the questions below.
Complete this comparison chart and answer the questions below.