Invertebrate Zoology Exam 2

In Chinese liver flukes the first intermediate host is (A)

If a (parasitic) fluke only has 1 host it is in class

Most of the volume of a polyp is made up by

Polychaetes are

This percent of nematodes are parasitic on plants, animals and humans

the most common type of cnidocytes in cnidarians

In freshwater, hyrdrozoans have a Medusa form

Which is certain about comb jellies in phylum Ctenophora

What is this?

The wrong characteristic of nematodes shown is

Monogeneans attach to hosts w/ ___; Trematodes attach w/ ___

This is a?

Gnathastomulida, micrognathozoa, rotifers and acanthocephala

Strobilation means

What is untrue of lancet liver flukes

This type of tapeworm is a

This concentrates water being expelled from under the medusa's oral surface (jet propulsion)

The excretory system of Annelids has

These marine annelids can be classified as errant or sedentary

Ctenophores are less complex than sponges and cnidarians

These are

Polyps in which group have membranes in the GVC to increase surface area

These worms have a mucous filter feeding Bag and 3 fan like parapodia that act as a water pump

In anthozoans, polyps have gametes from which

Filarial worms are threadlike and live in

Earthworms and leeches are in class

This gnathiferan aschelminthes has a ciliated corona, a foot w/ adhesive glands and is found FW

Rhopalia (in Schyphozoa)

Polyclad worms are

Bristle and scale worms are

Polychaetes may have __ which is a pelagic reproductive portion that breaks off of the worm

Most of annelida is made up by

Protostomes/schizocoelous came _ and deuterostomes/enterocoelous came_

Segmented cycloneuralian w/ chitin cuticle that burrows in mud

Elephantiasis, river blindness, African eye worm, and dog heart worm are

Ctenophores are the __ animals based on genetic differences

A and B

B, C, D

Worm rock, lug worm and parchment worm and fan worms are

The traditional view of ctenophore evolution argues

What is Vellela vellela?

Protostomes are

Annelids are coelomates meaning they

all except what are examples of octocorallia

Rotifera is capable of

Annelids have a ___ digestive system/gut and a __ circulatory system

In this cross section of a roundworm, A & B are

hydromedusa in class hydrozoa are

Belief that moderate infection can protect against autoimmune disease like asthma or hay fever

In aschelminthes, the characteristic parthenogenesis expresses

Flatworms have respiratory and circulatory systems

Examples of cnidarian mutualism

Phylum nematoda is included as Part of

What kind of polyp is solitary and lacks a skeleton

Hook/whip/pin/filarial/guinea worm, ascaris, trichinosis, anasakiasis are all

Chinese liver flukes infect 15-70% of some areas and have

Polychaetes have

Jellyfish, ManofWar, Sea whip & fan, coral, anemone, hydra, hydroid, BTWS & blue button

Subphylum Medusazoa has a __ genome and often includes the medusa stage

Turbellarians are free-living and have

Natural expulsion of zooxanthellae causing failure of stressed coral to reestablish mutualism

These are

A; B

What is this?

Schyphozoa includes

Hermatypic corals and zooxanthellae allow for

This is

This group in Gnathiferan Aschelminthes is tiny interstitial fauna with a GVC and no anus

This fluke lives in the bile duct, feeds on blood, and infects through eating of raw FW fish

These Trematodes are (left to right)

A

These are clades in aschelminthes

These polychaetes are

Platyhelminthes is closely related to

20-30 celled parasites w/ intercellular gametes and embryos

Echiurans are detritus feeders that have __; they also have __ but lack them in adulthood

In cnidarian mutualism what do zooxanthellae provide polyps

Metamerism w/ septa between segments, setae/chaetae, trochophore larvae are characteristics of

What cnidarian group is this?

A; B

Schistosomiasis lacks what two parts of the life cycle

Which is untrue of class Anthozoa

In this ascaris cross section, the space is

What is true of subclass octocorallia

The red marked areas are

Organisms in Subclass octocorallia and common in aquariums

At this location, a pogonophoran has __

Polyps of Cnidarians are

Hookworm, ascaris, and whipworm are human parasites that

What is Physalia physalis?

C

What is Porpita porpita?

What is the purpose of nematocysts?

Arenicola cristata is

B

This is

Normally muscles can both contract, AND lengthen

C and D

A is the primary, secondary and tertiary ____

Which is a statocyst

Statocysts and Ocelli are

This type of polyp engages in feeding and defense (C)

What is this

True facts about guinea worm

The eyes in cubozoa are not complex

Aschelminthes are

How do you treat/alleviate the pain of a sting from a cnidarian?

D

In the Chinese liver fluke the second intermediate host is (B)

Possibly the most numerous animals on earth

B

Where do moon jellyfish live?

Nematomorpha, priapulida, kinorhyncha, and loricifera

this part of a medusa is a

Which is a thicker-bodied with organ systems

Hydrostatic skeleton is a characteristic of

sipunculans are detritus feeders that lack

This stage of the cnidarian is the ** (make sure to know the parts)

Which class is the common jellyfish found in

Tapeworms have hooks in this head like region which attach to the intestinal wall

If you are a polyclad flatworm, you have

Barrel shaped cycloneuralian w/ chitin cuticle; lives in mud of cold, anoxic, high salinity SW

planula larvae stage is a form of __ reproduction that gives rise to colonial cnidarians

Trichinosis and Anasakiasis are nematodes transmitted by

In aschelminthes, the characteristic cryptobiosis expresses

Flatworms have protonephridial systems with ___

Leeches (hirudinea)

Octocorallia and Hexacorallia are subclasses of what group

Chironex fleckeri and irukandji

this fingerlike polyp engages in defense (A)

E

This clade of aschelminthes is molting with a ring-like circumpharyngeal Brain

This is a

Phragmatapoma caudata is

Nematode parasites that are transmitted by biting insects

worm penetrates human skin & enters the circulatory system; larva swallowed when human coughs

Which is not a characteristic of cnidarians?

Rhyncocoel forms from a split in

C

Rotifera-like; live on lobster mouths; organ re/degeneration; dwarf males; asexual feeding

What causes coral bleaching

Schistosomiasis, Chinese liver fluke, and swimmer’s itch are

This is a

True about Comb jellies

polyps regularly reproduce through

What is not true of flatworms

This human infecting fluke infects bird blood and is common in temperate lakes

cycloneuralian w/ cuticular lorica (protective plates); attach to marine gravel; anaerobic

Hirudinea and oligochatae are

These tapeworms (cysticercosis) develop in various tissues including muscle

Bilaterians are not/do not have

cycloneuralian -> horsehair-like, has no gut, aquatic as adults & larval parasites to arthropod

A is what

What’s this

How to break the lifecycle infectious flukes and tapeworms?

Box jellyfish and sea wasps are found in what group

Interstitial; have spiny/scaled/bristled cuticle; foot w/ adhesive glands; FW and SW

B, C, G

Polychaetes that swim/crawl, have head sensory appendages, & are predator/scavenger/herbivores

Which is true of roundworms

in Class Hydrozoa, Polyps and medusa are BOTH present __

Polychaetes are __ w/ __ fertilization and have trochophore larva

This stage of a cnidarian is the **(make sure you know the parts)

The turgor pressure (A) in roundworms/nematodes is

This is

DNA studies support that ctenophores are genetically

Parenchyma in flatworms are also known as

Schyphozoa Medusa have

What are the main predators of jellyfish

Creeping eruption is hookworm in

Which is not true of class cubozoa

Has a proboscis that shoots out to attack prey and stings

You get this worm by eating raw/infected marine organisms; painful & requires physical removal

the central nervous system of annelids does not have

Truth about whipworms

Cnidarians are __ meaning the ectoderm is the epidermis and the endoderm is they gastrodermis

(A) displays what 2 polychaetes

Cnidarians have

Most common worm infection in US (occurs through environmental contamination)

What causes sea lice/sea bather’s eruption?

This Clade of aschelminthes is momophyletic, non-molting, and has jaws in a muscular pharynx

How do cnidarians hunt their prey

Manubrium in scyphozoa have

Ctenophores suffer in taxonomy from the “complexity problem” meaning

In aschelminthes, the characteristic eutely expresses

A, b, c, d

sensory organs that help with balance and orientation

Fan worms, Medusa worms, and feather dusters, and pongonophorans are

In this cross section of a planarian what is the structure marked?

Which is untrue of Class Schyphozoa

a simple "eye" in cnidarians

Phyla of uncertain relationship (aschelminthes)

A, E, H

The purpose of metamerism is for

Have rhyncocoel w/ an versions proboscis

Asexual reproduction in cnidarians occurs through

In Schyphozoa the velum is

False about Tapeworms (cestoda)

Hosts of fish tapeworms: 1st? 2nd? 3rd?

Groups of segments functioning as a unit

Not true about schistosomiasis

Medusa remains in... (A)

Stressed corals

Which is untrue of Class Hydrozoa

This gnathiferan aschelminthes is microscopic w/ complex jaws and is found in Greenland moss

Big tapewormlike intestinal worm whose eggs live 10 years in soil; humans ingest eggs

This nematode worm is transmitted through water

Aschelminthes

What is untrue of class myxozoa?

Burrowing/tube polychaetes w/ reduced parapodia/setae/head, undergo tagmatization, eat detritus

Phylum platyhelminthes includes

E and F

B is a fishing polyp. What is it?

What is false about sheep liver flukes

leaving behind basal discs to reproduce

Flatworms have a nervous system without cephalization

Dog tapeworms with hydatid cysts are an epidemic in

D and F

subcellular organelles under turgor pressure w/ barbs that extend out & penetrate skin

Dog tapeworms

Hermatypic corals are what

This tapeworm like gnathiferan aschelminthes has a spiny proboscis and no digestive system

Class Trematoda (Digenetic flukes with 2-4 hosts)

What is not a distinctive characteristic of comb jellies in Ctenophora

In Chinese liver flukes the final host is (C)

Eutely, cryptobiosis, and parthenogenesis are characteristics of

In cnidarian mutualism what do polyps provide zooxanthellae

Cnidarians are found __ and are mostly __

B

Earthworms (oligochatae)

Which is false in flatworms

Third worst human parasitic disease

Class Clitellata

Which animal has mutualism with zooxanthellae

You can be infected by this worm by eating raw/undercooked pork/wild game

Polyps in schyphozoa

Acanthocephalans are also known as

Which is an ocelli

Flatworms can regenerate, and are able to reproduce by

Polyps that are small but conspicuous, colonial, and polymorphic (polyps w/ many purposes)

In anthozoans, zygotes become a planular larvae before they become adults

Which is false in flatworms

1st, 2nd, and 3rd Hosts of beef/pork tapeworms

Predatory “Arrow worms” w/ grasping spines; fins; coelomates and protostomes

A is a modified Medusa. What is A?

Phylum Ctenophora includes

The sheep liver fluke and lance liver fluke are

The cercariae of this fluke bore into human skin via water and are spread by waste

The extension to the mouth in a cnidarian is called a

Aurelia aurita

Which is untrue of fire corals

C and D are

Turbellaria, monogenea, trematoda, and cestoda are classes of

Medusa of Cnidarians are

What are these

Which is not true of hexacorallia

The longest animal on earth

Most polyps are colonial with skeletons

Flame cells in flatworms

True about pogonophorans

This is a __; see the CaCO3 tubes

In worms, circular and longitudinal muscles

This type of polyp engages in asexually reproducing medusae

Class cestoda of flatworms are

Turbellarians are

What’s this