Which of the following best explains why modern seedless vascular plants are confined largely to wet
or humid environments?
a. They require external water for reproduction.
b. They do not have true roots.
c. They lack stomata.
d. They have a dominant sporophyte generation.
e. They do not have flowers or fruits.
A
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Electron microscopes have less resolving power than light microscopes
Indicate whether the statement is true or false.
Which strain of Escherichia coli may be involved in foodborne infection?
A. HB101 B. M309 C. AB220 D. O157:H7
A group of similar species that share recent common ancestry is a(n) ____
a. class b. order c. species d. kingdom e. genus
Using the table, into which group would you classify a virus with single-stranded DNA capable of converting to double-stranded before transcription takes place?
a. Group VI
b. Group III
c. Group II
d. Group V