The calyx is composed of
a. petals.
b. sepals.
c. stigmas.
d. ovules.
e. anthers.
Answer: b
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Which of the following is used to describe the openings to the hearts in animals with open circulatory systems?
a. atria b. ostia c. septa d. ventricles
Stem cells show promise for mending damage
due to a. spinal cord injuries. b. Parkinson's disease. c. muscular dystrophy. d. heart attacks. e. all of these.
To provide motility, prokaryotic flagella whip back and forth while eukaryotic flagella rotate.
Answer the following statement true (T) or false (F)
Horizontal gene transfer is less prevalent in eukaryotic species because
A. of the multicellularity in eukaryotic species, which is lacking in prokaryotic species. B. eukaryotic species reproduce by sexual reproduction. C. of the presence of organelles and multicellularity. D. of the presence of organelles in the cells of eukaryotic species. E. of multicellularity and sexual reproduction.