Question 1

A person working in a rice paddy in Asia becomes infected with the liver fluke by

Accepted Answer

A) eating infected snails. 
B) drinking water contaminated with eggs. 
C) eating infected fish that was undercooked or raw. 
D) swimming or wading in infected water,where the cercariae enter the skin. 
A) eating infected snails. 
B) drinking water contaminated with eggs. 
C) eating infected fish that was undercooked or raw. 
D) swimming or wading in infected water,where the cercariae enter the skin.

Question 2

The only animal in which digestion occurs within cells is

Accepted Answer

A) comb jellies. 
B) flatworms. 
C) sponges. 
D) cnidarians. 
A) comb jellies. 
B) flatworms. 
C) sponges. 
D) cnidarians.

Question 3

Which statement is NOT true about echinoderms?

Accepted Answer

A) The exoskeleton is made of spiny plates. 
B) Gas exchange occurs through skin gills and tube feet. 
C) Larvae are free-swimming and bilaterally symmetrical. 
D) A water vascular system allows the tube feet to produce suction. 
E) Symmetry is radial in the adult,usually with parts in fives or multiples of five. 
A) The exoskeleton is made of spiny plates. 
B) Gas exchange occurs through skin gills and tube feet. 
C) Larvae are free-swimming and bilaterally symmetrical. 
D) A water vascular system allows the tube feet to produce suction. 
E) Symmetry is radial in the adult,usually with parts in fives or multiples of five.

Question 4

Which list of traits is characteristic of the ecdysozoans?

Accepted Answer

A) Periodically shed their outer covering,non-segmented body plan and pseudocoelom on some,contain an exoskeleton and undergo metamorphosis. 
B) Periodically shed their outer covering,non-segmented body plan and contain a layer of jellylike fluid called mesoglea,contain an exoskeleton and undergo metamorphosis. 
C) Periodically shed their outer covering,segmented body plan and pseudocoelom on some,contain an endoskeleton and undergo metamorphosis. 
D) None of the these are correct. 
A) Periodically shed their outer covering,non-segmented body plan and pseudocoelom on some,contain an exoskeleton and undergo metamorphosis. 
B) Periodically shed their outer covering,non-segmented body plan and contain a layer of jellylike fluid called mesoglea,contain an exoskeleton and undergo metamorphosis. 
C) Periodically shed their outer covering,segmented body plan and pseudocoelom on some,contain an endoskeleton and undergo metamorphosis. 
D) None of the these are correct.

Question 5

The easiest method of preventing sea stars from moving is to ____________.

Accepted Answer

A) plug their madreporite 
B) cut off 2 of their arms 
C) squeeze the tube feet as they are extended from the body 
D) lay them on their arboreal side 
E) None of the above would prevent a sea star from moving. 
A) plug their madreporite 
B) cut off 2 of their arms 
C) squeeze the tube feet as they are extended from the body 
D) lay them on their arboreal side 
E) None of the above would prevent a sea star from moving.

Question 6

The major insect body parts are

Accepted Answer

A) head,cephalothorax,and abdomen. 
B) cephalothorax,midsection,and abdomen. 
C) head,thorax,and abdomen. 
D) head,prothorax,and metathorax. 
E) head,cephalothorax,and genitalia. 
A) head,cephalothorax,and abdomen. 
B) cephalothorax,midsection,and abdomen. 
C) head,thorax,and abdomen. 
D) head,prothorax,and metathorax. 
E) head,cephalothorax,and genitalia.

Question 7

Bilaterally symmetrical animals

Accepted Answer

A) tend to be active and move forward. 
B) tend to exhibit cephalization. 
C) have right and left sides when cut longitudinally. 
D) All of the choices are correct. 
A) tend to be active and move forward. 
B) tend to exhibit cephalization. 
C) have right and left sides when cut longitudinally. 
D) All of the choices are correct.

Question 8

Which of the following list of features describes the molluscs and bivalves but not the annelids?

Accepted Answer

A) Lack of cephalization,contain a muscular foot and a mantle,may posses a hard outer shell and have a complete digestive system. 
B) Presence of cephalization,contain a muscular foot and a mantle,may posses a hard outer shell and have a complete digestive system. 
C) Lack of cephalization,contains circular muscles that enable them to move,may posses a hard outer shell and have a complete digestive system. 
D) Lack of cephalization,every member of the group will have a hard outer shell as well as a complete digestive system. 
E) None of these lists describes the molluscs and bivalves but not the annelids. 
A) Lack of cephalization,contain a muscular foot and a mantle,may posses a hard outer shell and have a complete digestive system. 
B) Presence of cephalization,contain a muscular foot and a mantle,may posses a hard outer shell and have a complete digestive system. 
C) Lack of cephalization,contains circular muscles that enable them to move,may posses a hard outer shell and have a complete digestive system. 
D) Lack of cephalization,every member of the group will have a hard outer shell as well as a complete digestive system. 
E) None of these lists describes the molluscs and bivalves but not the annelids.

Question 9

Which statement most accurately describes the colonial flagellate hypothesis?

Accepted Answer

A) Animals are descended from an ancestor that resembles a spherical colony of flagellated cells. 
B) Both animals and fungi are descended from an ancestor that resembles a spherical colony of flagellated cells. 
C) All animals are descended from an ancestor that resembles a single celled organism that was a flagellated cell. 
D) None of these describe the colonial flagellate hypothesis. 
A) Animals are descended from an ancestor that resembles a spherical colony of flagellated cells. 
B) Both animals and fungi are descended from an ancestor that resembles a spherical colony of flagellated cells. 
C) All animals are descended from an ancestor that resembles a single celled organism that was a flagellated cell. 
D) None of these describe the colonial flagellate hypothesis.

Question 10

Which of the following statements is NOT correct about cnidaria?

Accepted Answer

A) The adult body is bilaterally symmetrical. 
B) Most are found in shallow coastal marine environments. 
C) There are two tissue layers,an outer epidermis and inner gastrodermis. 
D) Stinging cells contain a threadlike nematocyst released to capture prey. 
E) A jellylike mesoglea separates the two tissue layers. 
A) The adult body is bilaterally symmetrical. 
B) Most are found in shallow coastal marine environments. 
C) There are two tissue layers,an outer epidermis and inner gastrodermis. 
D) Stinging cells contain a threadlike nematocyst released to capture prey. 
E) A jellylike mesoglea separates the two tissue layers.

Question 11

A unique species of snail has been discovered in the Negev Desert.At night,these snails use a toothlike rasping organ in their head to scrape up porous limestone; they then digest the algae that lived in the rock pores.This scraping organ is the

Accepted Answer

A) labial palp. 
B) radula. 
C) mantle. 
D) tentacle. 
E) crop. 
A) labial palp. 
B) radula. 
C) mantle. 
D) tentacle. 
E) crop.

Question 12

Which statement concerning body symmetry is not correct?

Accepted Answer

A) In radial symmetry,two identical halves are obtained regardless of how the animal is sliced longitudinally. 
B) The evolution of bilateral symmetry is accompanied by cephalization. 
C) Asymmetrical animals have no body shape. 
D) Bilaterally symmetric animals are usually sessile. 
E) Radial symmetry is useful because the animals can reach out in all directions. 
A) In radial symmetry,two identical halves are obtained regardless of how the animal is sliced longitudinally. 
B) The evolution of bilateral symmetry is accompanied by cephalization. 
C) Asymmetrical animals have no body shape. 
D) Bilaterally symmetric animals are usually sessile. 
E) Radial symmetry is useful because the animals can reach out in all directions.

Question 13

Periodically shedding their outer covering is a feature unique to the ________

Accepted Answer

A) ecdysozoans. 
B) echonodermata. 
C) mollusca. 
D) lophotrochozoans. 
E) bryozoans. 
A) ecdysozoans. 
B) echonodermata. 
C) mollusca. 
D) lophotrochozoans. 
E) bryozoans.

Question 14

Flukes are divided into Monogenea and Digenea.Monogenea have a posterior holdfast with hooks,clamps,and suckers; Digenea have suckers but never hooks and clamps.Monogenea have only one host in the life cycle,and usually live on gills or skin of fish and amphibians; Digenea have at least two hosts and often three or more,and are named because they have two reproductive states in their life cycle (an adult and intramolluscan phase).From what you now know,the blood fluke Schistosoma would therefore be

Accepted Answer

A) an endoparasite and Monogenean. 
B) an endoparasite and Digenean. 
C) an ectoparasite and Digenean. 
D) an ectoparasite and Monogenean. 
A) an endoparasite and Monogenean. 
B) an endoparasite and Digenean. 
C) an ectoparasite and Digenean. 
D) an ectoparasite and Monogenean.

Question 15

Animals are classified according to all of the following features EXCEPT

Accepted Answer

A) presence or absence of segmentation. 
B) mode of reproduction. 
C) type of body symmetry. 
D) number of germ layers. 
E) molecular data. 
A) presence or absence of segmentation. 
B) mode of reproduction. 
C) type of body symmetry. 
D) number of germ layers. 
E) molecular data.

Question 16

Which statement is NOT correct about the roundworms?

Accepted Answer

A) There are three layers of tissues in the body. 
B) Roundworms have a tube-within-a-tube body plan. 
C) There is an internal body cavity called a pseudocoelom. 
D) Roundworms have a smooth unsegmented outside body wall. 
E) Roundworms are all parasitic. 
A) There are three layers of tissues in the body. 
B) Roundworms have a tube-within-a-tube body plan. 
C) There is an internal body cavity called a pseudocoelom. 
D) Roundworms have a smooth unsegmented outside body wall. 
E) Roundworms are all parasitic.

Question 17

Sponges feed differently than comb jellies because a sponge feeds by

Accepted Answer

A) acting as a net in a current that sweeps food particles into its central cavity and digests them externally. 
B) squeezing the spongocoel cavity and sucking debris in and out through the osculum. 
C) the beating of collar cells' flagellae,which form a current; the current brings food particles which are engulfed and digested by collar cells. 
D) the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge. 
A) acting as a net in a current that sweeps food particles into its central cavity and digests them externally. 
B) squeezing the spongocoel cavity and sucking debris in and out through the osculum. 
C) the beating of collar cells' flagellae,which form a current; the current brings food particles which are engulfed and digested by collar cells. 
D) the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.

Question 18

Identify the organisms that belong to the phylum that are included in the Deuterostomia.

Accepted Answer

A) octopuses & sea stars 
B) polychaetes and roundworms 
C) sea stars and crocodiles 
D) tapeworms and mollusks 
E) blood flukes and crustaceans 
A) octopuses & sea stars 
B) polychaetes and roundworms 
C) sea stars and crocodiles 
D) tapeworms and mollusks 
E) blood flukes and crustaceans

Question 19

The lophotrochozoans can be divided into two groups,which include

Accepted Answer

A) the protostomes and the deuterostomes. 
B) the comb jellies and the cnidarians. 
C) those that reproduce sexually and those that reproduce asexually. 
D) the lophophorates and the trochozoans. 
A) the protostomes and the deuterostomes. 
B) the comb jellies and the cnidarians. 
C) those that reproduce sexually and those that reproduce asexually. 
D) the lophophorates and the trochozoans.

Question 20

Which of these statements is NOT correct about the flatworms? Flatworm(s)

Accepted Answer

A) embryos are triploblastic. 
B) are deuterostomes. 
C) have a sac body plan with an incomplete gut. 
D) are free-living or parasitic. 
E) are in Phylum Platyhelminthes. 
A) embryos are triploblastic. 
B) are deuterostomes. 
C) have a sac body plan with an incomplete gut. 
D) are free-living or parasitic. 
E) are in Phylum Platyhelminthes.

Exam 28: Invertebrate Evolution

A person working in a rice paddy in Asia becomes infected with the liver fluke by

The only animal in which digestion occurs within cells is

Which statement is NOT true about echinoderms?

Which list of traits is characteristic of the ecdysozoans?

The easiest method of preventing sea stars from moving is to ____________.

The major insect body parts are

Bilaterally symmetrical animals

Which of the following list of features describes the molluscs and bivalves but not the annelids?

Which statement most accurately describes the colonial flagellate hypothesis?

Which of the following statements is NOT correct about cnidaria?

A unique species of snail has been discovered in the Negev Desert.At night,these snails use a toothlike rasping organ in their head to scrape up porous limestone; they then digest the algae that lived in the rock pores.This scraping organ is the

Which statement concerning body symmetry is not correct?

Periodically shedding their outer covering is a feature unique to the ________

Animals are classified according to all of the following features EXCEPT

Which statement is NOT correct about the roundworms?

Sponges feed differently than comb jellies because a sponge feeds by

Identify the organisms that belong to the phylum that are included in the Deuterostomia.

The lophotrochozoans can be divided into two groups,which include

Which of these statements is NOT correct about the flatworms? Flatworm(s)

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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