Multicellular organisms with hard exoskeletons, segmented bodies and four pairs of jointed legs in the adult stage are
A) algae.
B) arachnids.
C) insects.
D) helminths.
E) lice.
B
Bloom's Taxonomy: Knowledge
Section: Other Eukaryotes of Microbiological Interest: Parasitic Helminths and Vectors
Learning Outcome: 12.29
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A male peacock has enormous tail feathers that it uses in mating displays to attract females. While the tail feathers are an advantage in mating, what is the potential disadvantage of these feathers to the male?
A. The feathers require a lot of energy to produce. B. Bright feathers make males less susceptible to predation. C. The feathers make the male more attractive to other males. D. There are no disadvantages to having large tail feathers. E. The large tail feathers would make it easier to fly.
What is the function of antidiuretic hormone?
a. It increases the permeability of the collecting ducts to sodium so more is reabsorbed. b. It causes a high volume of less concentrated urine to be produced. c. It increases aldosterone secretion. d. It decreases renin secretion. e. It increases the permeability of the collecting ducts to water so more is reabsorbed.
An anaerobic reaction ________ .
a. occurs slowly b. occurs when a person is sedentary c. can be sustained for long periods of time d. requires oxygen e. does not require oxygen
Communities with a high level of bacterial diversity are found in many habitats including soil and aquatic environments. Recent studies indicate this diversity is crucial to the functioning of these communities. The same studies have also found that phage abundance plays a critical role in the maintenance of the bacterial diversity within these communities. Are phages a density-dependent or a density-independent regulating factor?
A. Density-dependent B. Density-independent