A mutualistic association between a plant root and a fungus is known as a
(a) sac fungus.
(b) lichen.
(c) mycorrhizal root.
(d) club fungus.
(c) mycorrhizal root.
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Which of the following is true of innate behaviors? Innate behaviors _____
A) are only weakly influenced by genes B) occur in invertebrates and some vertebrates but not mammals C) are limited to invertebrate animals D) are expressed in most individuals in a population
Which of the following is a characteristic only found in eucoelomates?
a. a true coelom b. a digestive cavity c. an ectoderm d. a mesoderm
Which vitamin is water soluble and cannot be synthesized by the body?
A) A B) C C) E D) K
Which of the following describe the typical lifecycle of amebiasis?
A) host makes contact with contaminated object; swallows cysts; trophozoites released from cysts in digestive tract; trophozoites travel to and reproduce in the liver; trophozoites travel to the lungs, trophozoites form cysts, cysts are coughed up, swallowed, and released from host in feces B) host makes contact with contaminated object; swallows cysts; trophozoites released from cysts; trophozoites reproduce in digestive tract; trophozoites travel to the lungs, trophozoites form cysts, cysts are coughed up, swallowed, and released from host in feces C) host makes contact with contaminated object; swallows cysts; trophozoites released from cysts; trophozoites reproduce in digestive tract; trophozoites travel to the lungs, trophozoites form cysts, cysts are coughed up and released from host in relatively large respiratory droplets that people sneeze, cough, drip, or exhale D) host makes contact with contaminated object; swallows cysts; trophozoites released from cysts; trophozoites reproduce in digestive tract; trophozoites and new cysts are released from host in feces E) host is bitten; cysts enter the bloodstream; trophozoites released from cysts in blood; trophozoites travel to and reproduce in the liver; new trophozoites circulate in blood, trophozoites are eaten by a new insect where they then form cysts