Talons Talk – Light Intensity, and Rate of Photosynthesis

Talons Talk:


Aryal, S. (2019, 1 11). Plastids- Definition, Structure, Types, Functions and Diagram. Retrieved 5 20, 2020, from Online Microbiology Notes: https://microbenotes.com/plastids-types-structure-and-functions/

Bassham, J. A., & Lambers, H. (2020, 17 3). Photosynthesis. Retrieved from ENCYCLOPÆDIA BRITANNICA: https://www.britannica.com/science/photosynthesis

Brilliant Biology Student. (2015). Effect of Light Intensity On the Rate of Photosynthesis. Retrieved 5 20, 2020, from Brilliant Biology Student: http://brilliantbiologystudent.weebly.com/effect-of-light-intensity.html#:~:text=Light%20intensity%20is%20one%20of,to%20a%20lesser%20degree%2C%20water.&text=Light%20is%20a%20limiting%20factor,proceed%20at%20its%20maximum%20rate.

Chong Liu, J. J. (2015, 4 7). Nanowire–Bacteria Hybrids for Unassisted Solar Carbon Dioxide Fixation to Value-Added Chemicals. Retrieved 5 20, 2020, from ACSPublications: https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b01254?journalCode=nalefd&

The Editors of Encyclopaedia Britannica. (2017, 6 27). Luminous intensity. Retrieved 5 20, 2020, from Encyclopædia Britannica: https://www.britannica.com/science/luminous-intensity

UCSB ScienceLine. (2014, 11 03). How does the level of light affect the rate of photosynthesis? Retrieved 5 20, 2020, from UCSB ScienceLine: http://scienceline.ucsb.edu/getkey.php?key=4647

University of California. (2001). Light Basics. Retrieved 5 20, 2020, from http://cse.ssl.berkeley.edu: http://cse.ssl.berkeley.edu/SegwayEd/lessons/light/measure3.html#:~:text=Intensity%20is%20like%20brightness%2C%20and,unit%20time%20per%20unit%20area.

Vidyasagar, A. (2018, 10 15). What Is Photosynthesis? Retrieved 5 25, 2020, from Live Science: https://www.livescience.com/51720-photosynthesis.html

Wimalasekera, R. (2019, 09 16). Effect of Light Intensity on Photosynthesis. Retrieved 5 24, 2020, from Wiley Online Library: https://onlinelibrary.wiley.com/doi/abs/10.1002/9781119501800.ch4


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10 comments on “Talons Talk – Light Intensity, and Rate of PhotosynthesisAdd yours →

  1. Great Job Evan! In middle school I was taught what photosynthesis is, but it was never taught about in more depth. Your presentation did a great job at explaining things about photosynthesis that I didn’t already know. In the future, I would suggest you either take more breaks in your presentation so you have time to catch your breath or you could talk slower, as at times it seemed like your voice was running out of energy. You mentioned that when there is not enough light, photosynthesis might not occur. What actually happens to the plant when they cannot do photosynthesis?
    – Ben

    1. Thanks for the feedback Ben! To answer your question, if a plant cannot photosynthesize, it will eventually die because it can’t produce energy for itself.

  2. Hi Evan! Your video was very insightful and you did a great job explaining the process of photosynthesis. One minor wish I have for your presentation is to keep your diagrams on the screen for a little longer. This is a very minor issue since I can just pause the video if I want to look at the images longer. You talked about how some plants have evolved with thick and waxy leaves to withstand the effects of light intensity. Could you explain in more detail how that works? Great work on your video.

    – Simran

    1. Thank you for the feedback! In areas with more intense light, such as deserts, plants have evolved to have thicker leaves or more wax/hair to avoid being burnt by the sun. These leaves cool down the plant and reduce evaporation, meaning that the high heat and light intensity won’t bleach the chlorophyll pigments or damage the plant. There are also other chemical processes that plants use to reduce sun damage.

  3. Hey Evan! I really enjoyed your TALONS talk! It was really engaging, and I loved how you chose to appear in person instead of using a PowerPoint. You did a great job connecting a current issue with information on photosynthesis.

    A small suggestion would be to move the text and diagrams to the side so that the audience can still see you and connect with you while you are displaying the images.

    I was wondering if all plants are required to carry out photosynthesis. Are there plants that can’t carry out photosynthesis?

    Overall, I really enjoyed your presentation, Evan! Super duper job, Evan!

    – Joanna

    1. Thank you for the feedback, Joanna. To answer your question, most plants are photosynthetic, but there are a few exceptions. Some plants are parasitic, and receive nutrients through a host instead of through photosynthesis. These are rare, but some examples include Beechdrops and Indian Pipes. Thanks Again.

  4. Great presentation Evan! You really went in-depth to explain how photosynthesis worked. The presentation was clear and easy to follow. One small suggestion that I have is have the images up a bit longer; This can make the images easier to view.

    One question that I have is: are there any plants that do not use photosynthesis? If so, how does the intensity level of light affect these plants?


    1. Thanks for the feedback Mike! I agree I could’ve had the images up for longer. As for your question, there are some parasitic plants that feed off other organisms and don’t use energy themselves. I guess light intensity can benefit them if the host is getting more energy because they can feed on more, but the light intensity does not affect them if they don’t photosynthesize. Thanks again for the feedback!

  5. What’s up Evan! This was such an informative and clean speech, great job! I commend anyone taking the video route for their presentation, so well done as well!
    I’m amazing at how much information and large topics you were able to cover at a reasonable pace in such a short time, and the accompanying text was just the perfect amount each time to not over or underwhelm me while watching. I also found your intro logo to really well done, and your voiceover of the word “problem” got me cracking up (even if it wasn’t intentional)!
    One specific wish I do have is the location of your images and text. I noticed that every time a new image or textbox appeared, the consistency of its location was quite random each time. Sometimes in the left corner or the bottom center, even covering the entire screen at times, I think it would have been more practical to have a set location for all your extra text and images each time you wanted to show us. In addition, extending the duration of certain images might have been helpful as well
    One quick question I had was about your point on light intensity and how it directly affects the rate of photosynthesis. Because light intensity directly affects the rate of photosynthesis on a plant, for example, is there a specific amount of light that is the conceived “sweet spot” that doesn’t damage the plants for too much or too little light?
    All in all, great video Evan!
    Gyu Min (TALONS 9)

    1. Thank you for the constructive feedback Gyu Min! As for your question, there is a sweet spot of light intensity for photosynthesis, but it completely depends on the type of plant, the location, and other factors. For the most part though, as long as there isn’t too little/no light, or too much light, photosynthesis will still occur at a healthy rate, as long as there aren’t any other limiting factors.

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