Most leaf cells are no more than ____ from a xylem vein
a. one inch
b. one centimeter
c. half a millimeter
d. 50 micrometers
e. two inches
C
Biology & Microbiology
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In vertebrates, the central nervous system develops directly from the ____
a. somites b. neural plate c. notochord d. cells of the neural crest e. neural tube
Biology & Microbiology
Darkness increases secretion of __________ by the pineal gland in the brain. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Refer to Figure 47-1. The root of the tooth is made up of the parts labeled:
a. 4 and 5 only
b. 3, 4, and 5 only
c. 1, 2, and 3 only
d. 1, 2, 3, and 4 only
e. 1, 2, 3, 4, 5
Biology & Microbiology
The largest population that can be maintained in an environment for an indefinite period of time is called the carrying
capacity. Indicate whether the statement is true or false.
Biology & Microbiology