Using severed aphid mouthparts, scientists have verified that in most species the phloem translocates mostly ____, but
that ____ may also be translocated.
a. glucose; amino acids
b. glucose; sugar alcohols
c. glucose; cellulose and starch
d. sucrose; raffinose and sorbitol
e. sucrose; glucose
d
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Explain how the composition and distribution of codons among living organisms provide evidence for evolution from a common ancestor
What will be an ideal response?
Sampling error can be minimized by one or
more of the following.
a. using a large sample. b. conducting the experiment or observation only once. c. throwing out data that does not fit the conclusion. d. using a small subset of a larger population. e. more than one of these can minimize sampling error.
Which area of the brain will integrate taste and smell signals with emotional states and stored
memories? a. the thalamus b. the hypothalamus c. the limbic system d. the pineal gland e. the corpus callosum
A group of an interbreeding natural population that is reproductively isolated from other such groups is called a
A) species. B) tribe. C) genotype. D) community. E) genus.