POB Shadwick exam 4 (final) chapter
questions and Answers
1. Which of the following is NOT a unique characteristic of all chordates at some time in
their life history?
A. a dorsal notochord
B. a ventral hollow nerve cord
C. pharyngeal pouches
D. radial symmetry
E. a postanal tail - -D
-Defining characteristics of chordates are
A. segmentation, dorsal hollow nerve cord, gill arches or pharyngeal pouches.
B. dorsal hollow nerve cord, notochord, bilateral symmetry, and postanal tail.
C. bilateral symmetry, segmentation, and well-developed coelom.
D. gill arches or pharyngeal pouches, dorsal tubular nerve cord, notochord, and postanal
tail. - -D
-Which of the following sequences correctly represents vertebrate evolution?
A. jawless fish - lobe-finned fish - amphibians - reptiles - mammals
B. jawless fish - amphibians - reptiles - lobe-finned fish - mammals
C. lobe-finned fish - mammals - reptiles - jawless fish - amphibians
D. lobe-finned fish - reptiles - mammals - jawless fish - amphibians - -A
-In vertebrates, the _______ is/are usually replaced by ________.
A. pharyngeal pouches; gill arches
B. dorsal hollow nerve cord; a ventral solid nerve cord
C. gill arches; pharyngeal pouches
D. notochord; a dorsal hollow nerve cord
E. notochord; a vertebral column - -E
-What is the correct evolutionary pathway for the key features of chordates?
A. notochord - vertebrae - jaws - bony skeleton - lungs - 4 limbs - amniotic egg - mammary
glands
B. vertebrae - notochord- jaws - bony skeleton - lungs - 4 limbs - amniotic egg - mammary
glands
C. notochord - vertebrae - jaws - bony skeleton - lungs - amniotic egg - 4 limbs - mammary
glands
, D. notochord - vertebrae - jaws - bony skeleton - mammary glands - lungs - 4 limbs -
amniotic egg - -A
-Jaws are believed to have evolved from the
A. cranium.
B. first ribs.
C. first pair of gill arches.
D. suckers of lampreys. - -C
-The lancelets are found
A. as parasites inside the tracts of fish.
B. very rarely in mountain streams, where they are almost extinct.
C. commonly in the sandy bottoms of shallow coastal waters around the world.
D. on the bottom of the ocean. - -C
-Which of these is NOT a characteristic of a shark?
A. ability to sense electric currents in the water
B. skeleton of cartilage
C. a sucker used to attach to prey
D. ability to sense pressure of other swimming objects
E. ability to detect blood in minute amounts - -C
-Sharks
A. have bone skeletons.
B. lack jaws.
C. have a keen sense of smell.
D. lack the lateral line system of bony fishes. - -C
-of the following, the most recent ancestor of amphibians would be
A. hagfish.
B. coelacanth.
C. skate.
D. ray-finned fish. - -B
-Which of these characteristics is NOT found in the amphibians but is developed in
reptiles?
A. thin, moist skin
B. internal fertilization
C. aquatic larvae
D. eggs with gelatinous covering - -B
questions and Answers
1. Which of the following is NOT a unique characteristic of all chordates at some time in
their life history?
A. a dorsal notochord
B. a ventral hollow nerve cord
C. pharyngeal pouches
D. radial symmetry
E. a postanal tail - -D
-Defining characteristics of chordates are
A. segmentation, dorsal hollow nerve cord, gill arches or pharyngeal pouches.
B. dorsal hollow nerve cord, notochord, bilateral symmetry, and postanal tail.
C. bilateral symmetry, segmentation, and well-developed coelom.
D. gill arches or pharyngeal pouches, dorsal tubular nerve cord, notochord, and postanal
tail. - -D
-Which of the following sequences correctly represents vertebrate evolution?
A. jawless fish - lobe-finned fish - amphibians - reptiles - mammals
B. jawless fish - amphibians - reptiles - lobe-finned fish - mammals
C. lobe-finned fish - mammals - reptiles - jawless fish - amphibians
D. lobe-finned fish - reptiles - mammals - jawless fish - amphibians - -A
-In vertebrates, the _______ is/are usually replaced by ________.
A. pharyngeal pouches; gill arches
B. dorsal hollow nerve cord; a ventral solid nerve cord
C. gill arches; pharyngeal pouches
D. notochord; a dorsal hollow nerve cord
E. notochord; a vertebral column - -E
-What is the correct evolutionary pathway for the key features of chordates?
A. notochord - vertebrae - jaws - bony skeleton - lungs - 4 limbs - amniotic egg - mammary
glands
B. vertebrae - notochord- jaws - bony skeleton - lungs - 4 limbs - amniotic egg - mammary
glands
C. notochord - vertebrae - jaws - bony skeleton - lungs - amniotic egg - 4 limbs - mammary
glands
, D. notochord - vertebrae - jaws - bony skeleton - mammary glands - lungs - 4 limbs -
amniotic egg - -A
-Jaws are believed to have evolved from the
A. cranium.
B. first ribs.
C. first pair of gill arches.
D. suckers of lampreys. - -C
-The lancelets are found
A. as parasites inside the tracts of fish.
B. very rarely in mountain streams, where they are almost extinct.
C. commonly in the sandy bottoms of shallow coastal waters around the world.
D. on the bottom of the ocean. - -C
-Which of these is NOT a characteristic of a shark?
A. ability to sense electric currents in the water
B. skeleton of cartilage
C. a sucker used to attach to prey
D. ability to sense pressure of other swimming objects
E. ability to detect blood in minute amounts - -C
-Sharks
A. have bone skeletons.
B. lack jaws.
C. have a keen sense of smell.
D. lack the lateral line system of bony fishes. - -C
-of the following, the most recent ancestor of amphibians would be
A. hagfish.
B. coelacanth.
C. skate.
D. ray-finned fish. - -B
-Which of these characteristics is NOT found in the amphibians but is developed in
reptiles?
A. thin, moist skin
B. internal fertilization
C. aquatic larvae
D. eggs with gelatinous covering - -B
