bio 11 part 1

All arthropods have A) a chitinous exoskeleton and jointed appendages. B) six legs and three body segments. C) antennae and compound eyes. D) stinging mouthparts. E) Only the second and third answer choices are correct.

A

All cnidarians have tentacles that are armed with rows of stinging A) cnidocysts. B) medusae. C) polyps. D) collar cells. E) epidermal cells.

A

All species are either ____________ or ______________. A) extant; extinct B) higher; lower C) in a phylum; not in a phylum D) endangered; threatened E) vertebrates; arthropods

A

Bivalves are filter feeders that draw a current of water through a tube called the ________________ and across their gills, where food particles are captured. A) incurrent siphon B) excurrent siphon C) gill tube D) cnidocyst E) cephalopod

A

Collar cells are found in A) sponges. B) nematodes. C) cnidarians. D) flatworms. E) segmented worms.

A

Echinoderm larvae are ________________, whereas echinoderm adults are ________________. A) bilaterally symmetrical; radially symmetrical B) radially symmetrical; bilaterally symmetrical C) aquatic; terrestrial D) gastropods; bivalves E) segmented; unsegmented

A

Some general evolutionary change trends in animals include A) larger body size, bilateral symmetry, and an enclosed, fluid-filled body cavity. B) greater surface area to volume ratio, radial symmetry, and diffusion to move nutrients in the body. C) lower surface area to volume ratio, radial symmetry, and mutualism with photosynthetic organisms. D) radial symmetry, motility, and filter feeding. E) bilateral symmetry, chitinous cell walls, and the ability to digest cellulose

A

The figure on page 449 represents a phylogenetic tree of the A) animals. B) vertebrates. C) protostomes. D) deuterostomes. E) chordates.

A

The human disease filariasis is caused by worms from which phylum? A) Nematode B) Platyhelminthes C) Annelida D) Cnidaria E) Mollusca

A

There are more species of _____________ than there are species of plants. A) beetles B) flies C) bees D) mammals E) crustaceans

A

You are eating in a French restaurant and read that snails are on the menu. Being a knowledgeable biologist, you kindly inform the other members at the table that this restaurant is serving the ___________ class of Mollusks. A) Gastropod B) Cephalopoda C) Bivalvia D) Monoplacophora E) Polyplacophora

A

How many life stages do cnidarians generally have? A) one B) two C) three D) four E) five

B

Which of the following statements about animal nervous systems is CORRECT? A) All taxonomic groups of animals have nervous systems EXCEPT flatworms. B) All taxonomic groups of animals have nervous systems EXCEPT sponges. C) All taxonomic groups of animals have nervous systems EXCEPT jellyfish. D) All taxonomic groups of animals have nervous systems EXCEPT sponges and jellyfish. E) All taxonomic groups of animals have nervous systems.

B

Which order of insects has the highest species diversity—more than that of any other order in animals? A) flies and mosquitoes B) beetles C) mayflies D) butterflies E) aphids

B

What is the major developmental characteristic that shows the close relationship between echinoderms and chordates? A) In both groups, all individuals have notochords during the larval stage. B) In both groups, the gut develops from front to back. C) In both groups, the gut develops from back to front. D) In both groups, development occurs by continually adding skeletal elements. E) Both groups have bilateral symmetry in all life stages.

C

Which animal phylum lacks true tissues? A) Annelida (segmented worms) B) Cnidaria (jellies, corals, and their relatives) C) Porifera (sponges) D) Nematoda (roundworms) E) Nemotaoda (roundworms)

C

Which of the following worms lack a digestive system? A) leeches B) earthworms C) tapeworms D) roundworms E) filariae

C

Segmented worms (annelids), roundworms (nematodes), and flatworms (platyhelminthes) A) make up a monophyletic clade. B) are all asexual. C) are all internal parasites. D) are all bilaterally symmetrical. E) Only the first and fourth answer choices are correct.

D

The most ancient branching point in the phylogeny of animals is the one that distinguishes between having A) radial or bilateral symmetry. B) single cellularity and multicellularity. C) first gut opening develop into mouth and first gut opening develop into anus. D) true tissues or no tissues. E) a body cavity or no body cavity.

D

Which of the following is TRUE about the exoskeleton of an insect? A) It provides protection from injury and predators. B) It helps the insect resist drying out. C) It prohibits growth. D) All of the above answer choices are true. E) Only the first and third answer choices are true

D

All animals A) share a common ancestor. B) are heterotrophic. C) have true tissues. D) have a backbone E) Only the first and second answer choices are correct.

E

The life cycle of most insects includes A) a larval stage devoted to feeding and growth. B) a pupal stage characterized by metamorphosis. C) an adult stage, where the insect reproduces. D) a nymph stage, where juveniles lack wings and reproductive organs. E) Only the first three answer choices are correct.

E

The phylum Platyhelminthes are more commonly known as A) flatworms. B) ribbon worms. C) earthworms. D) mollusks. E) snails.

E

Which of the following is NOT correct about all animals? A) All animals are descended from a common ancestor. B) All animals are heterotrophic. C) All animals are multicellular. D) All animals are eukaryotes. E) All animals have true tissues.

E

Which of the following is a common characteristic of the arthropod phylum? A) jointed appendages B) chitinous exoskeleton C) segmented body D) radula E) Only the first three answer choices are correct.

E