About half of all miscarriages are caused by ____
a. chromosomal abnormalities
b. alcohol use during pregnancy
c. cleft palate
d. tobacco use during pregnancy
e. illegal drug use during pregnancy
ANSWER: a
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Where do axons of olfactory receptors synapse with interneurons?
a. olfactory bulb b. ganglia c. spinal cord d. nasal cavity e. peripheral nerve
The entire process of producing two cells from one
cell a. starts with prophase. b. ends with cytokinesis. c. results in the equal distribution of organelles between cells. d. occurs only in multicellular organisms. e. starts with prophase and ends with cytokinesis.
Salinity is more variable in the intertidal zone of rocky shores than in sandy and muddy shores
Indicate whether the statement is true or false
A population of caterpillars feeds on the leaves of trees in a forest and is in turn food for birds that eat them off the tree leaves. Given this information, which adaptation would be most likely to evolve?
A) Caterpillars would evolve to a larger size. B) Caterpillars would evolve to eat the bark as well as the leaves. C) Birds would evolve to eat more types of insects. D) Caterpillars would evolve to a color that matched the leaves they eat.