The boreal forest, or taiga, is characterized by which of the following dominant plants?
a. palms
b. deciduous trees
c. grasses
d. conifers
d. conifers
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Our understanding of the evolutionary process reveals that ____
a. favorable traits become less common in future generations b. all populations are related through a shared ancestry c. evolution has produced the spectacular diversity of life on Earth d. all organisms change through time e. development has produced the spectacular diversity of life on Earth
One experiment in phototropism involved cutting off the tips of grass seedlings before exposing them to light from one side. The decapitated seedlings did not bend toward the light. A valid conclusion from this experiment would be that
A) plants cannot engage in photosynthesis without the tip of the plant. B) light is perceived by the tip of grass plants. C) a foil cover over the tip of the seedlings would cause them to bend. D) hormones are produced in all parts of the plant.
In an atom with a neutral overall charge, the number of protons is equal to the ________.
A. number of electrons minus the number of neutrons B. atomic mass C. number of electrons plus the number of neutrons D. number of electrons
The sinoatrial node consists of a form of this tissue.
A. nervous B. adipose C. muscular D. connective E. epithelial