A(n) _____ has a crown of ciliated tentacles that function in feeding
A) trochophore
B) lophotrochozoan
C) lophophore
D) cuticle
E) ecdysozoan
Answer: C
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Genetic sequence data from mitochondrial and Y chromosome DNA agree that the human family is _____ and it arose _____
A. young; in Africa B. young; in Europe C. old; in Africa D. old; in Europe E. old; in many regions around the world
Which of the following is not an example of symbiotic nitrogen fixation?
A. Anabaenea with a water fern B. Rhizobium with leguminous plants C. Azotobacter with certain photosynthetic protists D. Frankia with woody shrubs
Humpbacks sometimes employ a unique method of feeding which entails: a. filtering amphipods from the mud
b. head-lunging. c. creating bubble nets. d. constantly skimming the surface of the ocean.
Which statement is false?
a. Owl consumption of mice benefits grasses. b. Mice consumption of grasses is harmful to the grasses. c. Owl consumption of mice harms grasses. d. Owls are acting as secondary consumers when they eat mice. e. Mice are herbivores