Question 1

An insect whose larval and adult forms occupy different habitats and consume different food probably undergoes ____ metamorphosis.

Accepted Answer

Insects that undergo complete metamorphosis have distinct larval and adult stages that often occupy different habitats and have different diets. This process includes four stages: egg, larva, pupa, and adult.

Question 2

Members of the ____ subphylum, including spiders, ticks, mites, scorpions, and horseshoe crabs, have fanglike appendages used for biting prey and pedipalps used as grasping organs, sensory organs, or walking legs.

Accepted Answer

Members of the Chelicerata subphylum, which includes spiders, ticks, mites, scorpions, and horseshoe crabs, are characterized by having chelicerae, which are fang-like appendages used for biting or stinging prey, and pedipalps, which serve various functions such as grasping, sensing, or walking.

Question 3

Members of the ____ subphylum, including shrimp, lobsters, and crabs, generally have five pairs of appendages on their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.

Accepted Answer

Members of the Crustacea subphylum, which includes shrimp, lobsters, and crabs, are characterized by having five pairs of appendages on their heads, including two pairs of antennae and three pairs of mouthparts (one of which are mandibles). This is a distinctive feature of crustaceans.

Question 4

The members of the ____ subphylum have a three-part body plan: a head, thorax, and abdomen.

Accepted Answer

Hexapoda, which includes insects, is characterized by a three-part body plan consisting of a head, thorax, and abdomen.

Question 5

Match between columns
                        Premises: apical tuft of cilia
stomach
mouth
band of cilia
anus

Accepted Answer

The Answer of B and E and A and C is...

Question 6

Match between columns
                        Premises: jellyfishes, corals, and sea anemones

Accepted Answer

The Answer of Mollusca and Arthropoda and Ctenophora and Nemertea is...

Question 7

Molecular sequence analysis has revealed that Crustacea is paraphyletic, because it includes an ancestor but not all of its descendants; the descendants not included in this clade are the ____.

Accepted Answer

Hexapods, which include insects, have been shown through molecular sequence analysis to be more closely related to certain crustaceans than those crustaceans are to other members of their own group, making Crustacea paraphyletic by excluding hexapods.

Question 8

Match between columns
                        Premises: flatworms

Accepted Answer

The Answer of Nemertea and Mollusca and Nematoda and Platyhelminthes is...

Question 9

A Malpighian tubule is a(n) ____.

Accepted Answer

Malpighian tubules are specialized structures found in some arthropods, including insects and spiders, that are involved in the excretion of waste materials and osmoregulation. They help in the removal of nitrogenous wastes and the regulation of water and electrolytes.

Question 10

Match between columns
                        Premises: bristle worms, earthworms, and leeches

Accepted Answer

The Answer of Porifera and Annelida and Cnidaria and Arthropoda is...

Question 11

Match between columns
                        Premises: chitons, snails, slugs, and scallops

Accepted Answer

The Answer of Mollusca and Nemertea and Ctenophora and Onychophora is...

Question 12

Members of the ____ subphylum, including the centipedes and millipedes, have two body regions: a head with one pair of antennae and a segmented trunk with one or two pairs of legs per segment.

Accepted Answer

Myriapoda is the subphylum that includes centipedes and millipedes, characterized by two body regions: a head with one pair of antennae and a segmented trunk with legs.

Question 13

Match between columns
                        Premises: sponges

Accepted Answer

The Answer of Nematoda and Porifera and Cnidaria and Onychophora is...

Question 14

Members of the ____ subphylum are mostly insects and were among the first animals to colonize terrestrial habitats.

Accepted Answer

Hexapoda is the subphylum that includes insects, which are the largest group of animals to have colonized terrestrial habitats.

Question 15

Match between columns
                        Premises: comb jellies

Accepted Answer

The Answer of Nematoda and Platyhelminthes and Cnidaria and Mollusca is...

Question 16

Match between columns
                        Premises: roundworms
velvet worms

Accepted Answer

The Answer of Nemertea and Ctenophora and Annelida and Nematoda is...

Question 17

Comparisons of genetic information from various invertebrate groups have ____.

Accepted Answer

Comparisons of genetic information have significantly altered our understanding of the relationships among various groups of animals, leading to changes in classification that continue to be refined as more genetic data becomes available.

Question 18

Match between columns
                        Premises: spiders, insects, shrimp, and crabs

Accepted Answer

The Answer of Cnidaria and Onychophora and Arthropoda and Porifera is...

Question 19

The organism Caenorhabditis elegans , a member of the ____ phylum, is an important model organism for studies of the genetic control of development.

Accepted Answer

Caenorhabditis elegans is a member of the Nematoda phylum, making it an important model organism in genetic and developmental biology research due to its simplicity and well-mapped genome.

Question 20

Match between columns
                        Premises: ribbon worms

Accepted Answer

The Answer of Platyhelminthes and Arthropoda and Cnidaria and Ctenophora is...

Quiz 31: Animal Phylogeny, Acoelomates, and Protostomes

An insect whose larval and adult forms occupy different habitats and consume different food probably undergoes ____ metamorphosis.

Members of the ____ subphylum, including spiders, ticks, mites, scorpions, and horseshoe crabs, have fanglike appendages used for biting prey and pedipalps used as grasping organs, sensory organs, or walking legs.

Members of the ____ subphylum, including shrimp, lobsters, and crabs, generally have five pairs of appendages on their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.

The members of the ____ subphylum have a three-part body plan: a head, thorax, and abdomen.

Examine the parts of a trochophore larva. Match each letter with the structure it represents. Figure 31.1

Match each of the groups of organisms listed with the correct phylum.

Molecular sequence analysis has revealed that Crustacea is paraphyletic, because it includes an ancestor but not all of its descendants; the descendants not included in this clade are the ____.

Match each of the groups of organisms listed with the correct phylum.

A Malpighian tubule is a(n) ____.

Match each of the groups of organisms listed with the correct phylum.

Match each of the groups of organisms listed with the correct phylum.

Members of the ____ subphylum, including the centipedes and millipedes, have two body regions: a head with one pair of antennae and a segmented trunk with one or two pairs of legs per segment.

Match each of the groups of organisms listed with the correct phylum.

Members of the ____ subphylum are mostly insects and were among the first animals to colonize terrestrial habitats.

Match each of the groups of organisms listed with the correct phylum.

Match each of the groups of organisms listed with the correct phylum.

Comparisons of genetic information from various invertebrate groups have ____.

Match each of the groups of organisms listed with the correct phylum.

The organism Caenorhabditis elegans , a member of the ____ phylum, is an important model organism for studies of the genetic control of development.

Match each of the groups of organisms listed with the correct phylum.