Question 12

 

What are the interactions between photosynthesis and cellular respiration? [Chapter 54]

 

 

Primary Production in Ecosystems (read pages 1200-105)

 

  1. An ecosystems energy budget depends upon primary production (=photosynthesis).

 

  1. In aquatic ecosystems light and nutrients limit primary production.

 

  1. In terrestrial ecosystems temperature, moisture, and nutrients limit primary production.

 

 

 

Secondary Production in Ecosystems (read pages 1206-1214)

 

  1. The efficiency of energy transfer between trophic levels is usually less than 20%.

 

  1. Herbivores consume a small percentage of vegetation: the green world hypothesis.

 

 

 

John C. Murphy

           Science

Phone:  (815) 436-3200, ext. 2120

 

jmurphy@learningcommunity202.org

 



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