Ask A Scientist Botany Archive

name Raemond
status student
grade 9-12
location VA

Question - Pound for pound, do pine needles vs. other kinds of
leaves put out the same amount of oxygen? Deciduous vs. evergreen?
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Possibly helpful:

http://www.nef1.org/ea/koolkids/lesson4-s.html
http://www.utoronto.ca/env/jah/ace/C61_lc03.htm

Generally in temperate forests, deciduous trees might be expected to have
higher rates of photosynthesis than needle-bearing evergreen
trees. However, the situation might be expected to be the reverse in
tropical forests where the evergreens are often broad-leaved.

Anthony Brach Ph.D.
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