Which plants store CO2 in the form of malic acid and close their stomata during the day?
A) C3 plants
B) C4 plants
C) CAM plants
D) hornworts and liverworts
C
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In general, microbial growth in the open ocean is most limited by the availability of ________.
A. iron B. manganese C. phosphorus D. nitrogen
Why is it necessary to take special safety precautions when using radioactivity?
A. Radioactive substances will ionize cells. B. Radioactive substances have the potential to cause damage to living cells. C. Radioactive substances decay. D. Radioactive substances will perforate plasma membranes.
The fruits of which of the following plants are
dispersed by wind? a. maple b. thistle c. dandelion d. cattail e. all of these
When a biologist is looking for a suitable organism in which she can study the process of evolution in a laboratory setting, what would be an important consideration?
A) The organism should be large. B) The organism should have a short generation time. C) The organism should produce relatively few offspring. D) The organism should have a complete fossil record of its ancestry.