Question 1

_______ females have ventral pouches in which they carry and feed their offspring.

Accepted Answer

The answer of _______ females have ventral pouches in which...

Question 2

Refer to the figure.  The Mesozoic era marked the breakup of the major continents.Using the phylogeny shown, propose the likely geological and climatic changes that occurred at each letter (A-D).Provide evolutionary evidence to support your justifications.

Accepted Answer

The answer of Refer to the figure.  The Mesozoic...

Question 3

Which statement about the amphibians is false?

Accepted Answer

A)  They were more abundant in the past than they are today. 
B)  They lay yolky eggs with a protective shell. 
C)  Most must reproduce in or near water. 
D)  Their eggs are very sensitive to drying. 
E)  Living amphibians belong to three sister groups.

Question 4

The expanded mental abilities of humans are largely responsible for the development of _______, which is defined as the process by which knowledge and traditions are passed from one generation to the next.

Accepted Answer

The answer of The expanded mental abilities of humans are...

Question 5

Refer to the figure showing a Petromyzon marinus.  This lamprey shown obtains nutrients by

Accepted Answer

A)  attaching to fish and chewing away the body wall. 
B)  attaching to fish with its jawless mouth and rasping away flesh. 
C)  filtering plankton through the pharyngeal basket. 
D)  filtering plankton through the gills. 
E)  burying its body in the sand and actively grabbing prey with its mouth.

Question 6

Refer to the figure.  In which two groups of amniotes did endothermy convergently evolve?

Accepted Answer

A)  Crocodilians and mammals 
B)  Theropods and crocodilians 
C)  Theropods and mammals 
D)  Sauropods and theropods 
E)  Sauropods and mammals

Question 7

The chordates

Accepted Answer

A)  all have bony backbones. 
B)  include some animals without nervous systems. 
C)  pass through a developmental stage with pharyngeal slits. 
D)  are poorly represented in the fossil record. 
E)  are all filter feeders.

Question 8

Which of the following are not deuterostomes?

Accepted Answer

A)  Acorn worms 
B)  Insects 
C)  Sea stars 
D)  Tunicates 
E)  Lancelets

Question 9

Alongside a rocky tide pool, you discover an animal with a spherical body covered with spines that move when you touch it.This animal is most likely a(n)

Accepted Answer

A)  crinoid. 
B)  sea star. 
C)  sea urchin. 
D)  acorn worm. 
E)  sea cucumber.

Question 10

Refer to the figure showing a larval and an adult lancelet.  In the lancelet, which features are not chordate synapomorphies?

Accepted Answer

A)  Notochord 
B)  Segmented muscles 
C)  Post-anal tail 
D)  Dorsal hollow nerve cord 
E)  A complete gut

Question 11

The evolution of primitive _______ in the sister group of the ray-finned fishes provided an alternative method of gas exchange, thus setting the stage for the invasion of land.

Accepted Answer

The answer of The evolution of primitive _______ in the...

Question 12

The tube feet of sea cucumbers

Accepted Answer

A)  are used for grasping shells of bivalves. 
B)  are present on the arms. 
C)  are used for attaching to the substrate. 
D)  produce toxic substances. 
E)  are modified into tentacles.

Question 13

The species of hominid that was widespread between 500,000 and 28,000 years ago was _______.

Accepted Answer

The answer of The species of hominid that was widespread...

Question 14

Morphological, fossil, and molecular evidence support phylogenetic placement of birds among the reptiles, specifically in a specialized group of predatory dinosaurs called theropods.Which statement does not support this assertion?

Accepted Answer

A)  Modern birds and fossil theropods have dense, solid bones. 
B)  Modern birds and fossil theropods have a bipedal stance. 
C)  Modern birds and fossil theropods have a pelvis that points backward. 
D)  Modern birds and fossil theropods have elongated forelimbs with three fingers. 
E)  Modern birds and fossil theropods have three-fingered feet.

Question 15

Refer to the figure.  Which statement about the sea star shown in the figure is true?

Accepted Answer

A)  The top surface is the oral surface. 
B)  The body rests on the aboral surface. 
C)  The mouth is on the underside of the body. 
D)  It jets water out of its tube feet to move, making it look like a hovercraft. 
E)  It feeds on algae.

Question 16

An example of cultural evolution is

Accepted Answer

A)  the capacity for language. 
B)  enlargement of the brain cavity. 
C)  passing on of cultural norms to a following generation. 
D)  communicating signals that refer to immediate circumstances. 
E)  neoteny.

Question 17

Which statement concerning development is true?

Accepted Answer

A)  The coelom arises from splitting of the mesoderm, and the mouth arises from the blastopore in protostomes. 
B)  The coelom arises from splitting of the mesoderm, and the anus arises from the blastopore in protostomes. 
C)  The coelom arises from mesodermal outpocketing, and the anus arises from the blastopore in protostomes. 
D)  The coelom arises from mesodermal outpocketing, and the mouth arises from the blastopore in deuterostomes. 
E)  The coelom arises from splitting of the mesoderm, and the mouth arises from the blastopore in deuterostomes.

Question 18

The muscular pharynx of an acorn worm (a hemichordate) opens to the outside with a number of _______ through which water can exit.

Accepted Answer

The answer of The muscular pharynx of an acorn worm...

Question 19

Which of the following features are associated with a chondrichthyan that settles on sediments and feeds on the ocean floor?

Accepted Answer

A)  Prominent dorsal fin and laterally directed eyes 
B)  Rounded body with a flat underside 
C)  Triangular pectoral fins directed diagonally down and to the side 
D)  Dorsoventrally flattened body and broad pectoral fins 
E)  Rounded body with a prominent dorsal fin

Question 20

Which of the following uses tube feet for filter feeding?

Accepted Answer

A)  Sea cucumbers 
B)  Sea stars 
C)  Brittle stars 
D)  Sea urchins 
E)  Crinoids

Exam 32: Deuterostome Animals