The Monterey pine and the Bishop's pine inhabit some of the same areas of central California. The Monterey pine releases pollen in February, while the Bishop's pine does so in April. This is an example of ________ isolation
A) postzygotic
B) temporal
C) habitat
D) mechanical
Answer: B
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Which of the following is not a reason that mycorrhizae are particularly useful for enhancing the phosphorus uptake of plants?
A. They can neutralize phosphoric acid. B. Their thin cells can access regions of soil that plants cannot. C. Movement of phosphorus through fungal cytoplasm is faster than its diffusion through soil water. D. They can release phosphorus that is bound to soils.
What produces the ATP required for the Calvin cycle?
a. the stroma b. the cytoplasm c. ATP synthase d. the thylakoid lumen
The North American bison was hunted to near extinction in the 1800s, and has since recovered, but with decreased genetic diversity. This is an example of
A. gene flow. B. increased mutation rate. C. a bottleneck effect. D. natural selection. E. a founder effect.
The following are common to both charophytes and land plants except
A) sporopollenin. B) lignin. C) chlorophyll a. D) cellulose. E) chlorophyll b.