Introduction
Good morning learners. On today's lesson we will be looking at factors affecting the rate of photosynthesis. You have done photosynthesis on previous grades , I am sure that this section of photosynthesis will not be a problem to you and you can relate to it.
Please listen to the introduction and and supporting video. You may write a few notes about what you heard in your free time. It will help you to have a broader knowledge on Photosynthesis
Task
Date : 14 August 2021
Topic : Factors affecting the rate of photosynthesis
Answer the following questions about factors affecting the rate of photosynthesis. Use the above video to assist you.
Question 1
1.1 What does the term," Limiting factor" mean in photosynthesis? (2)
1.2 Give 3 factors affecting the rate of photosynthesis (3)
1.3 Explain how each of the factors mentioned in 1.1 affect the rate of photosynthesis. (6)
1.4 What are greenhouses? which role do they play in increasing the rate of photosynthesis (3)
Question 2
Look at the graph below and answer the questions that follow
2.1 Which factor is being measured on the above graph? (1)
2.2 Comment on the rate of photosynthesis on point A and B (2)
2.3 Suggest a reason for a constant rete on point C. (2)
2.4 Why do you thing the rate of photosynthesis is increasing instead of decreasing (3)
Process
Please go the following videos and links as they will help you enhance your knowledge on the rate of photosynthesis so that you will answer the questions
Try to answer the questions on the given link. They will help understand better
https://cdn.s3waas.gov.in/s32bb232c0b13c774965ef8558f0fbd615/uploads/2020/10/2020101299.pdf
https://mycourses.co.za/life-science-grade-11-photosynthesis-practical-question-papers/
Evaluation
The length of the question should correspond with the question
Extra marks will not be given
Normalize answering in a point form, unless stated otherwise
1 Mark for each correct point
There will be a serious penalty for spelling errors
Question 1 = 14
Question 2= 8
Conclusion
On our next lesson, we will be looking at Cellular Respiration. You are probably familiar with it since you have done it on previous grades
Please go through the below videos for preparation of our next lesson. I will explain them
Have a wonderful day and take care amid this pandemic.
https://learn.mindset.africa/sites/default/files/resourcelib/emshare-show-note-asset/1747_fdoc.pdf
https://www.dallachiesa.it/paperless/ptof1/GLI%20ALLEGATI%20DEL%20POF/clil.pdf
https://gifs.africa/wp-content/uploads/2020/05/Grade-11-Life-Science-Cellular-Respiration-Notes.pdf
Credits
Eilers, P.H.C. and Peeters, J.C.H., 1988. A model for the relationship between light intensity and the rate of photosynthesis in phytoplankton. Ecological modelling, 42(3-4), pp.199-215.
Jolliffe, P.A. and Tregunna, E.B., 1968. Effect of temperature, CO2 concentration, and light intensity on oxygen inhibition of photosynthesis in wheat leaves. Plant physiology, 43(6), pp.902-906.
Terry, N., 1980. Limiting factors in photosynthesis: I. Use of iron stress to control photochemical capacity in vivo. Plant Physiology, 65(1), pp.114-120.
Dietz, K.J. and Heber, U., 1984. Rate-limiting factors in leaf photosynthesis. I. Carbon fluxes in the Calvin cycle. Biochimica Et Biophysica Acta (BBA)-Bioenergetics, 767(3), pp.432-443.
Ye, Z.P., 2007. A new model for relationship between irradiance and the rate of photosynthesis in Oryza sativa. Photosynthetica, 45(4), pp.637-640.
Gnaiger, E., Steinlechner-Maran, R., Méndez, G., Eberl, T. and Margreiter, R., 1995. Control of mitochondrial and cellular respiration by oxygen. Journal of bioenergetics and biomembranes, 27(6), pp.583-596.
Songer, C.J. and Mintzes, J.J., 1994. Understanding cellular respiration: An analysis of conceptual change in college biology. Journal of Research in Science Teaching, 31(6), pp.621-637.
Wegrzyn, J., Potla, R., Chwae, Y.J., Sepuri, N.B., Zhang, Q., Koeck, T., Derecka, M., Szczepanek, K., Szelag, M., Gornicka, A. and Moh, A., 2009. Function of mitochondrial Stat3 in cellular respiration. Science, 323(5915), pp.793-797.
Lobritz, M.A., Belenky, P., Porter, C.B., Gutierrez, A., Yang, J.H., Schwarz, E.G., Dwyer, D.J., Khalil, A.S. and Collins, J.J., 2015. Antibiotic efficacy is linked to bacterial cellular respiration. Proceedings of the National Academy of Sciences, 112(27), pp.8173-8180.
Gnaiger, E., 2003. Oxygen conformance of cellular respiration. Hypoxia, pp.39-55.