Deck 24: Animal Diversity I: Invertebrates

Question 1

The major difference between protostomes and deuterostomes is the

A) presence or absence of cephalization.
B) presence or absence of tissues.
C) presence or absence of a coelom.
D) type of body symmetry.
E) way the body cavity forms.

Answer 1

E

Question 2

The common ancestor of sponges and other animals was probably

A) multicellular with tissues but without organ systems.
B) multicellular with tissues and a few organ systems.
C) multicellular without tissues.
D) multicellular with tissues and many organ systems.
E) unicellular.

Answer 2

C

Question 3

Which germ layer gives rise to the muscle layer of the uterus?

A) Mesoderm
B) Ectoderm
C) Endoderm

Answer 3

A

Question 4

A_________ is an organism whose body cavity forms between the body wall and the digestive system.

A) hermaphrodite
B) deuterostome
C) protostome
D) nematode
E) sponge

Question 5

Which of the following animal phyla is distinguished by a lack of tissues?

A) Sponges
B) Annelids
C) Flatworms
D) Roundworms
E) Echinoderms

Question 6

Anemones have no

A) mesoderm.
B) endoderm.
C) ectoderm.

Question 7

How many tissue layers are in the embryos of sponges?

A) None
B) One
C) Two
D) Three
E) Four

Question 8

The only animals that lack tissues are

A) nematodes.
B) chordates.
C) sponges.
D) cnidarians.
E) chytrids.

Question 9

Which of the following characteristics is often associated with animals that are radially symmetrical?

A) Gastrovascular cavity
B) Cephalization
C) Sessile or otherwise nonmobile
D) Mesoderm
E) Mobility

Question 10

A multicellular organism that lacks cell walls and obtains energy by eating other organisms is a(n)

A) fungus.
B) animal.
C) alga.
D) chytrid.
E) plant.

Question 11

Damage to the embryonic ectoderm would show up as damage to which adult body tissues?

A) Body cavity linings
B) Muscles
C) Circulatory tissue
D) Nervous tissue
E) Skeletal tissue

Question 12

Organisms that are radially symmetrical have_________ embryonic germ layers.

A) two
B) three
C) four
D) five
E) six

Question 13

Between the organs and the body wall, complex animals have a body cavity called a

A) mesoderm.
B) thorax.
C) coelom.
D) cnidarian.
E) mesoglea.

Question 14

An arthropod embryo has _________germ layer(s).

A) no
B) one
C) two
D) three
E) four

Question 15

One trend in the evolution of animals is the increase in the number of tissue (germ) layers during embryonic development. Flatworms and more complex animals have_________ layers.

A) two
B) three
C) four
D) five
E) six

Question 16

In the animal kingdom, cephalization is

A) development of a body that has paired structures forming a side-to-side mirror image.
B) the ability to respond rapidly to external stimuli.
C) development of eyes at the anterior end of the organism.
D) evolutionary development of a netlike system of veins.
E) concentration of sensory structures in the head.

Question 17

The skin and nervous tissues develop from which germ layer?

A) Ectoderm
B) Mesoglea
C) Endoderm
D) Mesoderm
E) Protoplasm

Question 18

A cnidarian, which is radially symmetrical, has _________germ layer(s).

A) no
B) one
C) two
D) three
E) four

Question 19

All animals with tissues have

A) radial symmetry.
B) bilateral symmetry.
C) three germ layers.
D) two germ layers.
E) symmetrical bodies.

Question 20

Which of the following characteristics is associated with all animals that are bilaterally symmetrical at some point in their life cycle?

A) Gastrovascular cavity
B) Cephalization
C) Coelom
D) Lack of organs
E) Mesoderm

Question 21

The simplest multicellular animals that have only a few different cell types are

A) sponges.
B) sea squirts.
C) flatworms.
D) jellyfish.
E) anemones.

Question 22

Giant squids are classified as

A) echinoderms.
B) chordates.
C) platyhelminthes.
D) arthropods.
E) mollusks.

Question 23

The currents of water (containing food) that pass through a sponge are maintained by

A) ganglia.
B) collar cells.
C) medusae.
D) the osculum.
E) a water-vascular system.

Question 24

Insects are members of the group

A) Echinodermata.
B) Mollusca.
C) Arthropoda.
D) Arachnida.
E) Annelida.

Question 25

Which of these groups is characterized by having no body cavity?

A) Cnidarians
B) Arthropods
C) Roundworms
D) Chordates
E) Annelids

Question 26

Hydra, anemones, and jellyfish are in the phylum

A) Protista.
B) Platyhelminthes.
C) Flagellates.
D) Cnidaria.
E) Porifera.

Question 27

Which of these groups is characterized by a lack of symmetry (neither radial nor bilateral)?

A) Arthropods
B) Chordates
C) Cnidarians
D) Flatworms
E) Sponges

Question 28

What causes schistosomiasis, a devastating disease that affects about 200 million people in tropical regions?

A) Trichinella
B) Echinoderms
C) Parasitic flatworms called blood flukes
D) Amoebas
E) Nematodes

Question 29

Sponges have

A) an exoskeleton.
B) a gastrovascular cavity.
C) a nerve net.
D) spicules.
E) muscles.

Question 30

Which invertebrate animal group is characterized by having a closed circulatory system?

A) Annelida
B) Platyhelminthes
C) Echinodermata
D) Arthropoda
E) Nematoda

Question 31

Ecdysozoans

A) have a body cavity that forms from the digestive system.
B) include mollusks, annelids, and flatworms.
C) periodically shed their outer body covering.
D) have trochophore larva.
E) have a special feeding structure.

Question 32

A cnidarian that builds a calcium carbonate skeleton is a(n)

A) snail.
B) crab.
C) oyster.
D) clam.
E) coral.

Question 33

Which cnidarian is the basis of many impressively diverse marine habitats?

A) Jellyfish
B) Coral
C) Anemone
D) Hydra
E) Sea cucumber

Question 34

A(n)_________ provides support and protection to arthropods.

A) epidermis
B) cytoskeleton
C) hydrostatic skeleton
D) shell
E) exoskeleton

Question 35

An animal such as a grasshopper can conserve water because it has an elaborately branching system of tubes within its body that it uses for gas exchange. These tubes are called

A) gills.
B) flame cells.
C) tracheae.
D) book lungs.
E) kidneys.

Question 36

Worms with a well-developed circulatory system (including five pairs of hearts) are

A) eels.
B) annelids.
C) nematodes.
D) platyhelminths.
E) echinoderms.

Question 37

The phylum Nematoda includes which of the following very common organisms, some of which are parasitic and most of which are often found in soil?

A) Earthworms
B) Tapeworms
C) Flatworms
D) Roundworms
E) Segmented worms

Question 38

_________are characterized by having a pseudocoelom.

A) Chordates
B) Annelids
C) Cnidarians
D) Roundworms
E) Arthropods

Question 39

Flatworms lack

A) a digestive cavity.
B) a respiratory system.
C) a reproductive system.
D) a nervous system.
E) the ability to move.

Question 40

Which of these groups is characterized by having a TRUE coelom?

A) Arthropods
B) Cnidarians
C) Roundworms
D) Flatworms
E) Sponges

Question 41

In the various cnidarian species

A) all live as medusae.
B) all live as polyps.
C) all have medusae as the juvenile stage and polyps as the adult stage.
D) some live as polyps, some as medusae, and some as both in different stages.
E) all have polyps as the juvenile stage and medusae as the adult stage.

Question 42

Members of the phylum _________are characterized by having tube feet.

A) Echinodermata
B) Mollusca
C) Annelida
D) Platyhelminthes
E) Arthropoda

Question 43

Adult echinoderms that have radial symmetry lack

A) a head.
B) a method of movement.
C) a coelom.
D) nervous tissue.
E) a tubular gut with separate mouth and anus.

Question 44

Oysters are classified in the phylum

A) Echinodermata.
B) Mollusca.
C) Annelida.
D) Platyhelminthes.
E) Arthropoda.

Question 45

Within the mollusks, only the cephalopods have a

A) radula.
B) hinged shell.
C) coelom.
D) tubular gut.
E) closed circulatory system.

Question 46

The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are ?inflated? by the_________ , which is unique to the echinoderms.

A) hydrostatic skeleton
B) tubular gut
C) coelom
D) water-vascular system
E) hemocoel

Question 47

The venomous sea wasp is classified in the phylum

A) Cnidaria.
B) Mollusca.
C) Nematoda.
D) Arthropoda.
E) Annelida.

Question 48

A hemocoel or blood cavity is found in or associated with

A) sponges.
B) cephalopods.
C) acoelomates.
D) all animals.
E) an open circulatory system.

Question 49

A sea urchin is a member of the phylum

A) Echinodermata.
B) Mollusca.
C) Annelida.
D) Platyhelminthes.
E) Arthropoda.

Question 50

A snail is a(n)

A) arthropod.
B) echinoderm.
C) chordate.
D) mollusk.
E) nematode.

Question 51

The low energy demands of nematodes allow them to survive without a

A) body cavity.
B) tubular gut.
C) reproductive system.
D) skeleton.
E) respiratory system.

Question 52

What distinguishes a free-living flatworm from other organisms?

A) A cuticle
B) A coelom
C) Eyespots
D) A tubular gut
E) Hooks

Question 53

The animals most like the ancestral protist colonies that likely gave rise to all animals are

A) echinoderms.
B) arthropods.
C) chordates.
D) sponges.
E) nematodes.

Question 54

Spiders belong to the

A) cnidarians.
B) echinoderms.
C) mollusks.
D) arthropods.
E) chordates.

Question 55

Which of the following animals uses a radula to scrape food into its mouth?

A) Rat
B) Octopus
C) Scallop
D) Snail
E) Starfish

Question 56

A clam is a(n)

A) echinoderm.
B) mollusk.
C) chordate.
D) arthropod.
E) arachnid.

Question 57

Which of the following animals are arachnids?

A) Grasshoppers
B) Wasps
C) Spiders
D) Beetles
E) Flukes

Question 58

The taxonomic group that contains the most species and seemingly most intelligent invertebrates is

A) Gastropoda.
B) Uniramia.
C) Aves.
D) Chordata.
E) Cephalopoda.

Question 59

Which of the following phyla contains animals that reproduce asexually?

A) Annelida
B) Cnidaria
C) Nematoda
D) Chordata
E) Mollusca

Question 60

A crayfish is a member of the phylum

A) Echinodermata.
B) Mollusca.
C) Annelida.
D) Platyhelminthes.
E) Arthropoda.

Question 61

Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle.

Question 62

The only invertebrates capable of flight are arachnids.

Question 63

A hemocoel is part of an open circulatory system.

Question 64

Sponges are radially symmetrical.

Question 65

An animal whose body cavity is completely lined with mesoderm has a pseudocoelom.

Question 66

Animal cells lack a cell wall.

Question 67

Parasitic tapeworms are members of the phylum

A) Platyhelminthes.
B) Cnidaria.
C) Arthropoda.
D) Nematoda.
E) Annelida.

Question 68

Charles Darwin wrote that members of the phylum_________ are particularly important for agriculture because they mix and aerate soil.

A) Arthropoda
B) Nematoda
C) Platyhelminthes
D) Cnidaria
E) Annelida

Question 69

Most animal phyla are radially symmetrical.

Question 70

Of all of the invertebrate phyla, only members of the phylum_________ can fly.

A) Nematoda
B) Annelida
C) Platyhelminthes
D) Arthropoda
E) Cnidaria

Question 71

Animals obtain energy through photosynthesis.

Question 72

Flatworms have a coelom that is only partially surrounded with mesoderm.

Question 73

Members of the taxonomic group _________are best described as having a large, well -developed brain, having excellent vision, and being marine carnivorous predators.

A) bivalves
B) cephalopods
C) oligochaetes
D) insects
E) gastropods

Question 74

The _________is the embryonic germ layer that develops into nervous tissue.

Question 75

Chordates and echinoderms are both protostomes.

Question 76

Groups of similar cells that function together form_________ .

Question 77

The endoskeleton of an echinoderm is composed of

A) cellulose.
B) silica.
C) lignan.
D) chitin.
E) calcium carbonate.

Question 78

The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum

A) Cnidaria.
B) Nematoda.
C) Arthropoda.
D) Platyhelminthes.
E) Annelida.

Question 79

Cephalopods are the only mollusks that have a closed circulatory system.

Question 80

An arthropod exoskeleton is composed of

A) silica.
B) calcium carbonate.
C) cellulose.
D) chitin.
E) lignan.