Question 1

For most metazoans, what is the name of the innermost tissue layer during development?

Accepted Answer

A) mesoderm 
B) epiderm 
C) endoderm 
D) ectoderm 
A) mesoderm 
B) epiderm 
C) endoderm 
D) ectoderm

Question 2

Which class is composed mostly of terrestrial earthworms?

Accepted Answer

A) Monogenoidea 
B) Cestoda 
C) Oligochaeta 
D) Polychaeta 
A) Monogenoidea 
B) Cestoda 
C) Oligochaeta 
D) Polychaeta

Question 3

What is the name of a lineage of flatworms that are endoparasites of vertebrates?

Accepted Answer

A) Cestoda 
B) Turbellaria 
C) Trematoda 
D) Hirudinea 
A) Cestoda 
B) Turbellaria 
C) Trematoda 
D) Hirudinea

Question 4

What is the name of the main embryonic cell layer from which the muscles of the body wall are derived in most metazoans?

Accepted Answer

A) mesoderm 
B) endoderm 
C) ectoderm 
D) mesoglea 
A) mesoderm 
B) endoderm 
C) ectoderm 
D) mesoglea

Question 5

Which term refers to groups of cells that share a common structure and function?

Accepted Answer

A) organ systems 
B) organs 
C) tissues 
D) colonies 
A) organ systems 
B) organs 
C) tissues 
D) colonies

Question 6

What is a Malpighian tubule?

Accepted Answer

A) a filamentous projection of the mantle 
B) an abdominal appendage in some arthropods that secretes silk 
C) a muscular sac used for extending tube feet in echinoderms 
D) a specialized tube in some arthropods that is used for waste processing 
A) a filamentous projection of the mantle 
B) an abdominal appendage in some arthropods that secretes silk 
C) a muscular sac used for extending tube feet in echinoderms 
D) a specialized tube in some arthropods that is used for waste processing

Question 7

Which phylum has members that exhibit radial symmetry, with their body parts arranged regularly around a central axis?

Accepted Answer

A) Porifera 
B) Cnidaria 
C) Chordata 
D) Platyhelminthes 
A) Porifera 
B) Cnidaria 
C) Chordata 
D) Platyhelminthes

Question 8

The Burgess Shale formation in eastern British Columbia includes a wide variety of animal fossils such as Hallucingenia and Opabinia. When was the Burgess Shale formed?

Accepted Answer

A) about 8000 years ago 
B) about 78 million years ago 
C) about 505 million years ago 
D) about 4 billion years ago 
A) about 8000 years ago 
B) about 78 million years ago 
C) about 505 million years ago 
D) about 4 billion years ago

Question 9

Which class is composed mostly of freshwater parasites called leeches?

Accepted Answer

A) Hirudinea 
B) Oligochaeta 
C) Cestoda 
D) Polychaeta 
A) Hirudinea 
B) Oligochaeta 
C) Cestoda 
D) Polychaeta

Question 10

Which animal taxon is named for the cuticle or external skeleton that its members secrete and periodically moult?

Accepted Answer

A) Reptilia 
B) Deuterostomia 
C) Protostomia 
D) Ecdysozoa 
A) Reptilia 
B) Deuterostomia 
C) Protostomia 
D) Ecdysozoa

Question 11

Which phylum is associated with all of these terms: asymmetry, choanocytes, filter feeding, osculum, and spicules?

Accepted Answer

A) Porifera 
B) Nematoda 
C) Ctenophora 
D) Nemertea 
A) Porifera 
B) Nematoda 
C) Ctenophora 
D) Nemertea

Question 12

Which Lophotrochozoan phylum contains the most species, with about 100 000 described living species?

Accepted Answer

A) Nemertea 
B) Mollusca 
C) Annelida 
D) Rotifera 
A) Nemertea 
B) Mollusca 
C) Annelida 
D) Rotifera

Question 13

Which Ecdysozoan phylum contains the 65 species of velvet worms?

Accepted Answer

A) Arthropoda 
B) Nematoda 
C) Onychophora 
D) Nemertea 
A) Arthropoda 
B) Nematoda 
C) Onychophora 
D) Nemertea

Question 14

Which of the following describes a lophophore, which is a feature possessed by all members of the phyla Ectoprocta, Brachipoda, and Phoronida?

Accepted Answer

A) a rounded fold with one or two rows of hollow, ciliated tentacles 
B) an outpocket of the digestive tract, where metabolic wastes are processed before emptying into the digestive tract for expulsion 
C) a cluster of pores along the aboral surface, used for expelling wastes from the digestive tract 
D) an extra body cavity surrounding the digestive tract, filled with muscles used for locomotion 
A) a rounded fold with one or two rows of hollow, ciliated tentacles 
B) an outpocket of the digestive tract, where metabolic wastes are processed before emptying into the digestive tract for expulsion 
C) a cluster of pores along the aboral surface, used for expelling wastes from the digestive tract 
D) an extra body cavity surrounding the digestive tract, filled with muscles used for locomotion

Question 15

Which of the following describes the nutritional strategy of animals?

Accepted Answer

A) autotrophy, as either absorbing other life forms or by living in a parasitic association with them 
B) heterotrophy, as either absorbing other life forms or by living in a symbiotic association with them 
C) autotrophy, as either eating other life forms or by living in a symbiotic association with them 
D) heterotrophy, as either eating other life forms or by living in a parasitic association with them 
A) autotrophy, as either absorbing other life forms or by living in a parasitic association with them 
B) heterotrophy, as either absorbing other life forms or by living in a symbiotic association with them 
C) autotrophy, as either eating other life forms or by living in a symbiotic association with them 
D) heterotrophy, as either eating other life forms or by living in a parasitic association with them

Question 16

Which of the following secrete spicules?

Accepted Answer

A) sperm 
B) porocytes 
C) choanocytes 
D) amoeboid cells 
A) sperm 
B) porocytes 
C) choanocytes 
D) amoeboid cells

Question 17

Which flatworms are parasites of vertebrates and have a head modified into a scolex with hooks and suckers for attaching to places such as the intestinal wall of hosts?

Accepted Answer

A) Trematoda 
B) Cestoda 
C) Turbellaria 
D) Polychaeta 
A) Trematoda 
B) Cestoda 
C) Turbellaria 
D) Polychaeta

Question 18

What is the name of the chitin-reinforced bristles that protrude outward from the body wall and are used by most segmented worms to anchor themselves against a substrate?

Accepted Answer

A) clitella 
B) septa 
C) parapodia 
D) setae 
A) clitella 
B) septa 
C) parapodia 
D) setae

Question 19

Which lineage of Cnidarians exist primarily as cube-shaped medusae, are active swimmers, and produce one of the deadliest toxins made by animals?

Accepted Answer

A) Hydrozoa 
B) Trematoda 
C) Cubozoa 
D) Anthozoa 
A) Hydrozoa 
B) Trematoda 
C) Cubozoa 
D) Anthozoa

Question 20

Based on modern molecular phylogeny, which animal taxon has members with radial symmetry?

Accepted Answer

A) Ecdysozoa 
B) Deuterostomia 
C) Radiata 
D) Protostomia 
A) Ecdysozoa 
B) Deuterostomia 
C) Radiata 
D) Protostomia

Exam 27: Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

For most metazoans, what is the name of the innermost tissue layer during development?

Which class is composed mostly of terrestrial earthworms?

What is the name of a lineage of flatworms that are endoparasites of vertebrates?

What is the name of the main embryonic cell layer from which the muscles of the body wall are derived in most metazoans?

Which term refers to groups of cells that share a common structure and function?

What is a Malpighian tubule?

Which phylum has members that exhibit radial symmetry, with their body parts arranged regularly around a central axis?

The Burgess Shale formation in eastern British Columbia includes a wide variety of animal fossils such as Hallucingenia and Opabinia. When was the Burgess Shale formed?

Which class is composed mostly of freshwater parasites called leeches?

Which animal taxon is named for the cuticle or external skeleton that its members secrete and periodically moult?

Which phylum is associated with all of these terms: asymmetry, choanocytes, filter feeding, osculum, and spicules?

Which Lophotrochozoan phylum contains the most species, with about 100 000 described living species?

Which Ecdysozoan phylum contains the 65 species of velvet worms?

Which of the following describes a lophophore, which is a feature possessed by all members of the phyla Ectoprocta, Brachipoda, and Phoronida?

Which of the following describes the nutritional strategy of animals?

Which of the following secrete spicules?

Which flatworms are parasites of vertebrates and have a head modified into a scolex with hooks and suckers for attaching to places such as the intestinal wall of hosts?

What is the name of the chitin-reinforced bristles that protrude outward from the body wall and are used by most segmented worms to anchor themselves against a substrate?

Which lineage of Cnidarians exist primarily as cube-shaped medusae, are active swimmers, and produce one of the deadliest toxins made by animals?

Based on modern molecular phylogeny, which animal taxon has members with radial symmetry?

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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