A) Have narrower biogeographic ranges than species with non-planktonic larvae
B) Are found only in the Pacific Ocean
C) Are common in deep-sea soft bottoms
D) Have broader biogeographic ranges than species with non-planktonic larvae
F) B) and C)
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Correct Answer
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A) Sperm are first spawned by bivalves into the water
B) An embryo undergoes cleavage
C) Egg and sperm are in contact
D) Larval settlement occurs
F) B) and C)
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A) Never home to their original patch reef
B) Can adjust water depth to change directions in water currents
C) Can home to the exact spot where they were born
D) Have a life span of no more than one day
F) None of the above
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A) Require fresh and clean substrates, devoid of bacteria and other organisms
B) Cannot encounter an appropriate substratum, except by being thrust against the bottom by turbulent water motion
C) Can detect dissolved substances several meters away and swim toward them as a settling cue
D) Can detect dissolved substances a few centimeters away and swim toward them as a settling cue
F) C) and D)
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Correct Answer
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A) Dwarf parasitic males
B) Smaller and fewer eggs
C) Reproduction at an earlier age
D) Increase of sperm size
F) B) and D)
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Correct Answer
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A) They hope to maximize interspecies gamete contacts
B) The most phytoplankton food is in the water on these nights
C) The species are keyed into the same astronomical cycles, in order to maximize intraspecific gamete contact
D) These nights are very dark and one can avoid predators
F) A) and D)
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Correct Answer
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