Stomata controllable pores that permit CO 2 entry but also water exit How can

Stomata controllable pores that permit co 2 entry but

This preview shows page 29 - 34 out of 34 pages.

Stomata: controllable pores that permit CO2entry but also water exit. How can high enough levels of CO2be maintained without too much water loss?
Image of page 29
Raising CO 2 concentration by capture without rubisco C 4 plants capture CO 2 in mesophyll cells using PEP carboxylase, which is not sensitive to O 2 CO 2 is released in the bundle-sheath cells, and enters the Calvin cycle Efficiency of photosynthesis is improved by reduction in photorespiration
Image of page 30
CAM plants (Crassulacean Acid Metabolism): open stomata at night when it’s cooler, and there’s less danger of water loss, fix CO 2 by C4 close stomata during the day to preserve water, release stored CO 2 Agave
Image of page 31
The fate of synthesized carbohydrates in plants: Starch (storage) or sucrose (transported within plant) bucketandshack.jpg
Image of page 32
Review: chapter 10 Photosynthesis : 2 reactions in chloroplasts 1) ATP and the electron carrier NADPH are produced. Requires energy input from light, which is captured by photosystems I and II 2) (no light required) ATP and NADPH are used to reduce carbon dioxide (CO 2 ) to carbohydrate (CH 2 O) n
Image of page 33
For Chapter 10, be able to: Explain the energy flow and conversion of photosynthesis. Describe how ATP is produced during the light- capturing reactions of photosynthesis. Understand the purpose of the Calvin cycle and how it relates to photosynthesis. Discuss the importance of the CAM and C4 pathways and how they increase efficiency in photosynthesis.
Image of page 34

You've reached the end of your free preview.

Want to read all 34 pages?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture