Why do peanuts grow underground? Because they
a. are a product of the root.
b. are a product of the stem, which bends to the soil surface.
c. are a product of the flower, which bends to bury itself in the soil.
d. bud off the tuber, like the eyes of a potato.
e. are a part of the seed that never grows above the soil.
C
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Which area of an intertidal zone is typically covered by water at high tide, but is dry at low tide?
a. upper littoral zone b. midlittoral zone c. lower littoral zone d. limnetic zone e. profundal zone
The structure labeled “A” in the figure is a(n)
a. club-shaped reproductive cell. b. zygote. c. ascus. d. gill from the underside of a mushroom. e. spore sac.
The ________ model assumes that evolution occurs in spurts, between which there are long periods of stasis with little evolutionary change.
What will be an ideal response?
Which of the following is true of both mitochondria and chloroplasts?
A. They include stacks of membranes that absorb light B. They break down sugar to produce ATP C. They produce sugars using energy harvested in the cytoplasm D. They are found in the cells of eukaryotic autotrophs and heterotrophs E. They include compartments where hydrogen ions are concentrated