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Multiple Choice Feedback Quiz
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1

Virtually all of the major groups of organisms that survive at the present time, excluding plants, originated at the beginning of the
A)Cenozoic era.
B)Mesozoic era.
C)Paleozoic era.
D)Cretaceous period.
2

Dinosaurs appeared about ____ mammals appeared in the fossil record.
A)100 million years before
B)50 million years before
C)the same time as
D)50 million years after
3

Dinosaurs disappeared and mammals quickly expanded to fill their place about
A)300 million years ago.
B)220 million years ago.
C)100 million years ago.
D)65 million years ago.
4

The Alvarez hypothesis proposes that the dinosaurs became extinct because of
A)a comet striking the earth.
B)an infectious disease.
C)an increase in volcanic activity.
D)increased competition from mammals.
5

Most present-day orders of mammals appeared during the
A)Cenozoic era.
B)Mesozoic era.
C)Paleozoic era.
D)Cretaceous period.
6

Hagfish and ____ are present-day examples of agnathans.
A)eels
B)placoderms
C)cartilaginous fishes
D)lampreys
7

A characteristic of the sharks is
A)a lateral line system.
B)a cartilaginous skeleton.
C)a swim bladder.
D)all of the above
8

Before amphibians could be successful on land, they had to develop
A)a more efficient swim bladder
B)cutaneous respiration and lungs
C)gills.
D)shelled eggs.
9

The group of early reptiles that may have been warm-blooded was the
A)pelycosaurs.
B)therapsids.
C)thecodonts.
D)all of the above
10

Archaeopteryx had which key birdlike features?
A)hollow bones
B)feathers
C)well-developed collarbone
D)b and c only
11

A characteristic shared by all mammals is
A)mammary glands.
B)giving birth to live young.
C)hooves.
D)pouches.
12

The most efficient respiratory machine that has ever evolved is
A)transcutaneous respiration of amphibians
B)the tracheal system of insects
C)the gills of fish
D)the lungs of mammals
13

The most efficient lung is found in
A)mammals.
B)birds.
C)amphibians.
D)reptiles.
14

In birds and reptiles, the sinus venosus has become the
A)pacemaker.
B)right atrium.
C)left atrium.
D)pulmonary vein.
15

Which of the following have moist skin that is susceptible to water loss?
A)mammals
B)birds
C)amphibians
D)reptiles
16

Epochs are longer periods of time than are eras.
A)true
B)false
17

Four episodes of mass extinction during the Paleozoic era probably created many evolutionary opportunities for early plants and animals.
A)true
B)false
18

The first animals to live successfully on land were amphibians.
A)true
B)false
19

Jaws in fish evolved from the foremost gill arch of jawless fishes.
A)true
B)false
20

All vertebrates have closed circulatory systems.
A)true
B)false
21

Dehydration is a problem for marine fish.
A)true
B)false
22

A freshwater fish drinks little water and urinates little.
A)true
B)false
23

In an amniotic egg, the chorion allows oxygen to enter the egg and carbon dioxide to leave.
A)true
B)false
24

The functional unit of the kidney is the nephron.
A)true
B)false
25

The development of a placenta in marsupials allowed young to be retained inside the mother's body for a longer time.
A)true
B)false





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