The structure labeled "4" in the figure is a(n) ____
a. asexual spore
b. haploid spore
c. zygospore
d. gamete
e. spore sac
ANSWER: c
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Morphogen distribution inside a cell
A. is homogeneous. B. can be established prior to fertilization of the oocyte. C. can arise due to localized secretion by neighboring cells. D. is dependent on CAMs. E. can arise due to localized secretion by neighboring cells and occur prior to fertilization.
Club mosses, spike mosses, and quillworts are members of this phylum
a. Hepatophyta b. Pterophyta c. Bryophyta d. Lycophyta e. Anthocerophyta
Cardiac muscle cells are ____
a. involuntary b. spindle-shaped c. multinucleated d. slow contracting e. found in the walls of blood cells
The "fight-flight" response is enhanced by secretions
a. from the adrenal cortex. b. known as epinephrine and norepinephrine. c. stored in the pancreas. d. from the kidneys. e. known as acetylcholine.