After pollination delivers sperm to an ovule and the egg is fertilized, the ovule develops into a ____ and the
integument becomes the ____.
a. seed; micropyle
b. seed; seed coat
c. micropyle; seed
d. micropyle; seed coat
e. seed coat; seed
ANSWER: b
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For the bay checkerspot butterfly, a poor flyer, to recolonize small patch habitats, the new habitats must be ____
a. high quality b. low quality c. close to a source population d. far from a source population e. above a certain number of individuals
Which of the following groups are considered chordates but are lacking the vertebral column trait?
A. cephalochordates & chondrichthyes B. urochordata & cephalochordates C. sea squirts & chondrichthyes D. osteichthyes & urochordata
The synthesis of DNA or RNA from the organic soup would have been guided by the actions of enzymes in the
A. protein-first hypothesis. B. RNA-first hypothesis. C. clay-catalyst hypothesis. D. chloroplast.
A(n) (nonpolar/polar/ionic/hydrogen) bond is one in which electrons are shared equally between atoms.
Fill in the blank(s) with the appropriate word(s).