Monocots protect their first true leaves by ________, whereas eudicots protect their first leaves by ________.
A. bending their shoot as it grows through the soil; surrounding them with a protective sheath called the coleorhiza.
B. bending the coleorhiza as the shoot grows through the soil; a surrounding sheath called the coleoptile.
C. surrounding them with a sheath called a coleoptile; bending the shoot as it grows through the soil.
D. providing a protective layer called sepals; surrounding them with endosperm.
Answer: C
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A.usually weeded out of a population. B.usually neutral. C.usually beneficial. D.necessary for evolution. E.usually detrimental.
Tetanus is highly contagious through person-to-person contact
Indicate whether the statement is true or false.
An animal that can fertilize its own eggs is
A. a synchronous hermaphrodite. B. a sequential hermaphrodite. C. producing asexually. D. a protrandous hermaphrodite. E. a protogynous hermaphrodite.
Phylogenetic trees should be viewed as:
a) intellectual exercises, not to be interpreted literally. b) true genealogical relationships of species. c) hypotheses regarding evolutionary relationships of groups of organisms. d) the result of vertical, but never horizontal, gene transfer. e) representations of allopatric speciation events.