COMPLETE SOLUTIONS
Adult tunicates (urochordates) lack notochords, however, larval
urochordates have them and use them to ________. Correct
Answers aid in swimming; adults are sessile and thus no longer
propel themselves.
Albumen Correct Answers Protein rich solution that provides
water and support
Allantois Correct Answers waste storage
Amnion Correct Answers innermost layer of the fetal
membrane
• tough membrane filled with fluid in which embryo is
suspended
amniotic egg Correct Answers Egg with shell tht allowed
conquest of land
• albumen
• amnion
• chorion
• yolk sac
• allantois
amplexus Correct Answers the mating position of frogs and
toads, in which the male clasps the female about the back.
Atrium Correct Answers A heart chamber that receives blood.
, chorion Correct Answers Respiratory membrane just beneath
shell
echinoderms ____________ Correct Answers often use tube
feet to move around in their environment
Estivation Correct Answers Summer hibernation
Forebrain Correct Answers Smell
• became large cerebellum and medulla in jawed vertebrates
ganoid scales Correct Answers rhombus shaped scales found in
fossil fishes and ray-finned fishes
Hindbrain Correct Answers *CEREBELLUM, PONS,
MEDULLA
*Function = INVOLUNTARY PROCESSES - BP, BODY T⁰,
HR, BREATHING, SLEEP CYCLE
• balance and hearing
Holosteans Correct Answers Gars and Bowfin
• very primitive
How did the evolution of the jaw contribute to diversification of
early vertebrate lineages? Correct Answers It made additional
food sources available.
How does a swim bladder help the ray-finned fishes maintain
buoyancy? Correct Answers Gas is added to the bladder as the
fish's depth increases.