Sessile organisms are not animals. True or false?
a. True. An organism must move to be classified as an animal.
b. True. Sessile organisms are generally organisms without appendages and, therefore, are not true animals.
c. False. Sessile organisms may not move as adults, but they may exhibit movement as larvae.
d. False. There is no requirement for movement in defining an organism as an animal.
e. Neither true nor false. Organisms are not sessile; individual cells are.
Ans: c. False. Sessile organisms may not move as adults, but they may exhibit movement as larvae.
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Match the following items to the correct phrase.
_______1. The bacteria that cause syphilis and Lyme disease are _______2. are obligate intracellular pathogens that cause diseases such as trachoma, inclusion conjunctivitis, and urethritis. _______3. are photosynthetic. _______4. have no cell walls. _______5. are obligate intracellular pathogens that cause diseases such as typhus and Rocky Mountain spotted fever. a. chlamydias b. cyanobacteria c. mycoplasmas d. rickettsias e. spirochetes
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a. sporophylls b. sieve tube elements c. phloem vessels d. generative cells e. stalk cells
What is often true of the fruits eaten by birds and mammals?
A. They mimic the shape of insects. B. They contain a large number of parasites. C. They are brightly colored. D. They are pale colored with strong odors.
The spores that are released when the zygospore splits open are ________.
A. triploid B. haploid C. sterile D. diploid E. motile