The stomata ____
a. open at night in most plants
b. are open when the guard cells are swollen with water
c. close when water moves into the guard cells
d. are covered by the cuticle to reduce water loss
e. allow water to enter plant leaves
ANSWER: b
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5'GCCACCAUGGGCCAAUUACGAAGGUUUUGCUGACCAGGUCAA3' A. 7 B. 8 C. 10 D. 13
The mesophyll of the leaf has which of the following characteristics?
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The complement system is a group of ____
a. vaccines b. defense proteins c. antibodies d. antibiotics e. lymphocytes
Which fetal blood vessels carry oxygen-poor blood to the placenta?