Ferns occupy diverse habitats and have unique adaptations. Which of the following statements regarding fern adaptations is not true?
A. Tiny aquatic ferns, such as Salvinia, float
on the surface of the water.
B. Epiphytic ferns, such as staghorn ferns,
often produce two leaf types, one for
photosynthesis and spore production and the
other to form a pocket that collects organic
matter.
C. Azolla is a tiny aquatic fern that has been
used for centuries as a biofertilizer of rice.
D. Unlike many other groups of plants, ferns
have not been found to have symbiotic
associations with nitrogen-fixing bacteria.
E. Approximately 40% of living ferns are
epiphytes.
D
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Legionellosis is a zoonosis.
a. true b. false
Choose the function that does not characterize the vertebrate circulatory system.
A. protection B. elimination C. regulation D. transportation
What is the leading scientific hypothesis explaining how the endomembrane system of eukaryotic cells originated?
A. From the inward folding of the plasma membrane B. From engulfing eukaryotic cells C. From engulfing prokaryotic cells D. From the spontaneous formation of phospholipids
The presence of the strongest competitors in the
center of a group of animals may qualify the group for status as a(n) a. altruistic society. b. selfish herd. c. kin group. d. dominance hierarchy. e. sexual selection society.