The presence of a uniform distribution among plants is often used as an indication that ________ is occurring
Fill in the blank(s) with correct word
competition
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Chloroplasts are thought to have evolved from cyanobacteria. Which of the following observations support this hypothesis? (Select all correct choices.)
A. They both have similar internal membranes that organize the light reactions of photosynthesis. B. They both have small circular DNA genomes. C. They both have cell walls. D. They both have the capability of movement through flagella.
Derived character states shared by clade members are called
A. ancestral traits. B. homoplasies. C. synapomorphies. D. plesiomorphies. E. symplesiomorphies.
A researcher is studying fairy shrimp in a desert pond that is also inhabited by spadefoot
toads. How many populations does this represent?
a. one b. two c. three d. four
Phospholipid molecules that prevent the alveoli from collapsing are known as ________
A) laryngitis B) surfactant C) mucus D) plasma