Which of thfollowing is NOT a defining trait of a chordate's embryo?
A) A rod of stiff but flexible connective tissue extends the length of the body and provides support.
B) A hollow nerve cord parallels the notochord.
C) A vertebrate column extends the length of the body and supports the jaw.
D) Gill slits open across the wall of the pharynx.
E) A muscular tail extends beyond the anus.
Correct Answer:
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Q59: Cephalopods arthonly mollusks that possess
A)a mantle.
B)gills.
C)a closed
Q60: Cephalopods
A)are predators.
B)move by jet propulsion.
C)have a radial
Q61: Which group is strictly marinwith no freshwater
Q62: Which of thfollowing adaptations has contributeto thsuccess
Q63: Which of thfollowing organisms causes lymphatic filariasis
Q65: Which of thfollowing organisms havan exoskeleton?
A)annelids
B)arthropods
C)cnidarians
D)roundworms
E)flatworms
Q66: Tunicates anlancelets represent thtwo groups of
A)vertebrate chordates.
B)mollusks.
C)arthropods.
D)invertebrate
Q67: Shrimps, crabs, anlobsters arexamples of
A)cephalopods.
B)gastropods.
C)mollusks.
D)arachnids.
E)crustaceans.
Q68: _ transmit heartworms fro_.
A)Flies; cow to cow
B)Mosquitoes;
Q69: Thmost successful animals that havever evolvearthe
A)vertebrates.
B)insects.
C)humans.
D)protozoans.
E)mollusks.
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