Ulva is a genus of algae in the phylum Chlorophyta. What characteristic does Ulva share with ferns?
A. Intercellular communication via plasmodesmata.
B. The production of sperm and eggs for reproduction.
C. The ability to synthesize organic nutrients using light.
D. An embryonic sporophyte housed in maternal tissues.
E. Vascular tissue for the transport of substances.
C. The ability to synthesize organic nutrients using light.
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Cnidarians evolved from an ancestral group of
(a) sponges. (b) protists. (c) fungi. (d) plants.
Which of the following is categorized as a terrestrial ecosystem?
a. Amazon rainforest b. Lake Michigan c. Indian Ocean d. Rio Grande
During prophase II, ____.
A. a new spindle forms B. crossing over occurs C. chromosomes are single-stranded D. the cell is diploid E. the nuclear envelope re-forms
A potential drug for the treatment of prion disease would be
a. a protease because prions are made only of protein. b. a ribonuclease because prions are made only of nucleic acid. c. a nucleoside inhibitor to prevent formation of new nucleotides. d. none of the above.