You observe a 1-inch-tall plant in the woods. This plant is part of a mass of similar small plants covering an area of several square feet. It is very flexible and does not easily stand upright by itself
Upon examining the tiny, flat, leaflike structures of this plant, you see no veins. There is no evidence of seeds, but at the end of a little stalk on the tip of the plant, there is some sort of spore-bearing structure. This plant is probably a(n)
A) alga.
B) gymnosperm.
C) bryophyte.
D) angiosperm.
E) fern.
C
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Cephalopods have an open circulatory system
____________________ Indicate whether the statement is true or false.
Chihuahuas, Border Collies, and Great Danes (all domestic dogs) descend from the same wolf species and can still interbreed. These varieties were produced by
A) speciation. B) artificial selection. C) natural selection. D) genetic drift. E) inheritance of acquired traits.
Which developmental sequence is correct?
A) cleavage, blastula, gastrula, morula B) cleavage, gastrula, morula, blastula C) cleavage, morula, blastula, gastrula D) gastrula, morula, blastula, cleavage E) morula, cleavage, gastrula, blastula
Which group of microbes contains organisms necessary for production of wine and bread?
A. Algae B. Archaea C. Fungi D. Bacteria