Which of thfollowing is a disadvantagof an exoskeleton?
A) It does not provide as efficient a muscle anchorage as an endoskeleton.
B) It allows for excess water loss.
C) It must be shed for its owner to grow.
D) It is not flexible enough to allow a full range of movements.
E) It is not able to absorb pigments for sufficient camouflage.
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Q74: Thchordatfeaturstill present in thhuman adult is
A)the pharyngeal
Q75: Thmajority of deuterostomes are
A)chordates.
B)ectoderms.
C)insects.
D)mollusks.
E)annelids.
Q76: Thnotochoris most closely associatewith the
A)nervous system.
B)spinal cord.
C)skeletal
Q77: A water-vascular systethat operates thtubfeet is characteristic
Q78: Which of thfollowing organisms is not an
Q80: Metamorphosis in arthropods implies a
A)remodeling of body
Q81: Birds anmammals sharwhich of thfollowing characteristics?
A)ectothermy
B)body air
C)lung
Q82: Sharks anrays belong to the
A)birds.
B)amphibians.
C)cartilaginous fishes.
D)bony fishes.
E)reptiles.
Q83: In vertebratevolution, thappearancof thvertebral column lemost directly
Q84: A lamprey is lacking
A)a respiratory system.
B)jaws.
C)fins.
D)a respiratory
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