The ________ enclose and protect the flower bud, while the ________ advertise the flower to insects and other pollinators
A) anthers... petals
B) carpels... stigmata
C) sepals... stamens
D) sepals... petals
D
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Plants transport water to their leaves through the xylem when water evaporates from the leaves. The evaporating water pulls other water molecules up the xylem through ____ .
A. Hydrophobic interactions B. Ionic bonds C. Covalent bonds D. Hydrogen bonds
Without ____, living organisms would often experience major changes in pH in their cells
a. buffers b. acids c. surface tension d. nonpolar bonds e. bases
__________ is rapid diversification into new species
that occupy novel niches. Fill in the blank(s) with the appropriate word(s).
The portion of the molecule in box 3 of Figure 12-1 is:
a. a sugar.
b. a protein.
c. a pyrimidine.
d. a purine.
e. a nucleotide.