BioLab 210 Exam 2.0

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Bivalvia means "___".

2 shells

___ excrete waste through pores at the base of each antenna.

Antennal (green) glands

___ are the most anterior segments for balance, touch, and taste.

Antennules

___ pumps blood for the annelid.

Aortic arch

___ are respiratory organs on arachnids.

Book lungs

___ excretes to annelid gut excess calcium.

Calciferous gland

___ is the exoskeleton that covers the cephalothorax of crayfish.

Carapace

___ can have a painful bite.

Centipedes

___ are extremely stubby projections on either side of the abdominal tip that bear sensory organs capable of detecting air movements for arthropods.

Cerci

___ is an indentation on the carapace that extends across the mid-region and separates the head and thoracic region of a crayfish.

Cervical groove

___ are the "jaws" of arachnids that are hollow and contain venom glands.

Chelicerae

___ are the largest and most prominent pair of appendages, used for self defense, food acquisition, and manipulation (claws).

Chelipeds

___ are pigment cells that change the color of an organism, allowing it to camouflage. They are the dark spots around the squid's mantle.

Chromotophores

___ are two large nerves that lead from the brain, around the esophagus, and join the ventral nerve cord of the crayfish.

Circumesophageal connectives

___ band glandular structure that secretes a cocoon for fertilized eggs for the annelid.

Clitellum

___ attaches the leg to the body, allows the grasshopper to move.

Coxa

___ stores food for the annelid.

Crop

___ is a thin, transparent ecto-membrane acellular (no cells) of the annelid.

Cuticle

___ produces digestive enzymes for mollusks.

Digestive gland

___ are the branched enlargements of the ventral nerve cord found on each segment of the crayfish.

Ganglia

___ is the chitinous teeth in the stomach that grind up food for crayfish.

Gastric mill

___ grinds food for the annelid.

Gizzard

___ produces gametes for mollusks.

Gonad

Female

Identify sex of squid.

Male

Identify sex of squid.

___ absorbs and transports digested food.

Intestine

___ move food to the mouth of the bivalve.

Labial palps

___ (upper lip) holds food in place for arthropods

Labrum

___ are the "true jaws" behind the antennae that bite and crush food brought to the mouth.

Mandibles

___ is a tough edge shell.

Mantle

___ hold and recognize solid food, tear it, and pass it to the mouth of arthropods.

Maxillae

___ are finger like appendages that move their food around in the arthropod's mouth.

Maxillary palps

___ are the series of body segments on annelids.

Metameres

___ can be kinda toxic.

Millipedes

___ are coiled tubes that carry out metabolic waste excretion for annelids.

Nephridia

___ is the structure near the grasshopper's anus with four points used to dig into the ground when the eggs are laid.

Ovipositor

___ is the prominent sheath that covers the male genitalia on arthropods.

Pallium

___ are the organs of touch of arachnids.

Pedipalps

___ is the first body segment containing the mouth of the annelid.

Peristomium

___ is the first body segment that surrounds the mouth of the annelid.

Peristomium (behind the prostomium)

___ is a saddle-shaped shield on the prothorax used for protection on arthropods.

Pronotum

___ is the head of the annelid.

Prostomium (anterior to the peristomium)

___ is the end segment of an annelid that contains the anus.

Pygidium

___ is the pointed extension of the carapace at the head of the crayfish.

Rostrum

Phylum Mollusca classes

Scaphopoda Polyplacophora Gastropoda Bivalvia Cephalopoda

___ store the sperm of earth worms.

Seminal vesicles

___ divides segments internally for the annelid.

Septum

___ are bristle-like structures that help segmented worms move.

Setae

___ are found on tibia used for grooming or to connect with ground surface to assist in jumping on arthropods.

Spines

___ are silk-producing organs.

Spinnerets

___ are external respiratory pores of arthropods.

Spiracles

___ is the exoskeleton extension area joining tibia and tarsus on arthropods.

Spur

___ are the ventral appendages used for slow movement and maneuvering and also play a role in crayfish reproduction.

Swimmerets

___ are the three most major regions of the body.

Tagmatae

___ are the "feet" that help the grasshopper maintain stability.

Tarsus

___ is the triangular shaped middle of the two uropods. It bears the anus.

Telson

___ is the part of the body between the neck and the abdomen; legs and wings attached here.

Thorax

___ is the thin oval membrane of an arthropod that detects vibrations and mating calls.

Tympanum

___ is the internal fold of the intestine to increase surface area and absorb nutrients for the annelid.

Typhlosole

Cecum

What is indicated by the arrow?

Prostomium

What is the region indicated by the arrow?

Clitellum

What is the structure indicated by the arrow?

Mouth

What is the structure indicated by the arrow?

Nidamental Gland

What is the structure indicated?

Incurrent aperture

What is the structure labeled 10?

Gena

What is the structure labeled 13?

Posterior vena cava

What is the structure labeled 13?

Pen

What is the structure labeled 16?

Branchial heart

What is the structure labeled 17?

Systemic heart

What is the structure labeled 18?

Anterior adductor muscle

What is the structure labeled 1?

Cephalothorax

What is the structure labeled 1?

Copulatory swimmerets

What is the structure labeled 1?

Digestive gland

What is the structure labeled 1?

Fin

What is the structure labeled 1?

Gills

What is the structure labeled 1?

Ink sac

What is the structure labeled 21?

Abdomen

What is the structure labeled 2?

Eye

What is the structure labeled 2?

Intestine

What is the structure labeled 2?

Labial palp

What is the structure labeled 2?

Mouth

What is the structure labeled 2?

Abdominal flexor muscles

What is the structure labeled 3?

Antenna

What is the structure labeled 3?

Anus

What is the structure labeled 3?

Arm

What is the structure labeled 3?

Foot

What is the structure labeled 3?

Pyloric stomach

What is the structure labeled 3?

Cardiac stomach

What is the structure labeled 4?

Cheliped

What is the structure labeled 4?

Digestive glands

What is the structure labeled 4?

Excurrent aperture

What is the structure labeled 4?

Mantle

What is the structure labeled 4?

Tentacle

What is the structure labeled 4?

Antennule

What is the structure labeled 5?

Frons

What is the structure labeled 5?

Gill

What is the structure labeled 5?

Gonad

What is the structure labeled 5?

Ostium

What is the structure labeled 5?

Digestive gland

What is the structure labeled 6?

Heart

What is the structure labeled 6?

Green gland

What is the structure labeled 7?

Heart

What is the structure labeled 7?

Kidney

What is the structure labeled 7?

Periopods (walking legs)

What is the structure labeled 7?

Tibia

What is the structure labeled 86?

Spiricale

What is the structure labeled 87?

Trochanter

What is the structure labeled 88?

Prothorax

What is the structure labeled 89?

Clypeus

What is the structure labeled 8?

Mantle

What is the structure labeled 8?

Posterior adductor muscle

What is the structure labeled 8?

Uropod

What is the structure labeled 8?

Uropod

What is the structure labeled 90?

Ocelli (simple eye)

What is the structure labeled 91?

Cervical groove

What is the structure labeled 92?

Compound eye

What is the structure labeled 92?

Tympanum

What is the structure labeled 93?

Femur

What is the structure labeled 94?

Rostrum

What is the structure labeled 94?

Chela

What is the structure labeled 95?

Ovipositor

What is the structure labeled 95?

Swimmerets

What is the structure labeled 96?

Tarsus

What is the structure labeled 96?

Gill

What is the structure labeled 9?

Telson

What is the structure labeled 9?

excurrent aperture

What is the structure labeled 9?

Nidamental gland

What is the structure labeled A?

Ovary

What is the structure labeled A?

Penis

What is the structure labeled A?

Beak

What is the structure labeled B?

Vas deferens

What is the structure labeled B?

Testis

What is the structure labeled E?

Kidney

What is the structure labeled F?

Ink sack

What is the structure labeled I?

Siphon

What is the structure labeled J?

Gill

What is the structure labeled L?

Oviduct

What is the structure labeled M?

Siphon retractor muscle

What is the structure labeled M?

Dorsal

What position is label A?

Ventral

What position is label B?

The ___ closes the shells.

adductors

The ___ is near the mouth of the clam.

anterior end

The ___ of a shell is the large opening for the gastropod to come in or out.

aperture

The squid's ___ is a pair of hearts that pump deoxygenated blood from the body through the gills.

branchial hearts

The ___ stores food. It hangs off of the stomach near the testes of a squid.

cecum

A centipede is a ___.

chilopoda

Polyplacophora are ___.

chitons

Bivalvia are ___ and ___.

clams mussels

The ___ are hidden down in the pallial cavity and used for respiratory gas exchange.

ctenidia (gills)

A millipede is a ___.

diplopoda ("two feet")

The ___ transports blood for the annelid.

dorsal blood vessel

Scaphopoda are ___.

elephant tusk shells

The ___ aperture filters water out.

excurrent

The ___ is the upper half of the legs that moves and allows the grasshopper to walk.

femur

The ___ has a wavy edge.

foot

The ___ of a chiton is in the middle, soft, and forms suction.

foot

The ___ pushes the bivalvia foot out.

foot protractor

The ___ protect the hindwings of the grasshopper.

forewings

The ___ (siphon) with valves is where water jets out for the squid to move rapidly.

funnel

The ___ move the siphon of the squid.

funnel retractors

The ___ is only on the right side of the head of gastropods for reproduction.

genital pore

The ___ are also for feeding, not just breathing.

gills

The ___ move the head of the squid.

head retractors

Cephalopoda means "___".

head-foot

The ___ are used to fly and stabilize the grasshopper while jumping.

hindwings

The ___ connects the left and right valves of bivalvias.

hinge ligament

The ___ aperture filters water intake.

incurrent

The ___ is the canal on the squid's neck.

infundibular cartilage

The ___ is a black tube dorsal to the siphon that produces ink for protection.

ink sac

The squid's ___ is an excretory organ that filters waste products from blood.

kidney

the ___ (lower lip) holds food and saliva in the mouth by acting like lips.

labium

The ___ locks the shells.

lateral teeth

There are two lateral teeth on the ___ valve.

left

The ___ of annelids shorten the body segment.

longitudinal muscles

The ___ of bivalvias is the tissue stuck to the shells.

mantle

The squid's ___ is a muscular body tube surrounding the internal organs.

mantle

The ___ secretes the shell of gastropods.

mantle (collar)

Polyplacophora means "___".

many plates

The crayfish's ___ hold food while eating.

maxillipeds

The ___ is the inner layer of the bivalvia shell which pearls are made of.

nacreous layer

The ___ insure that water goes one direction in the squid.

neck valves

All arthropods and non-cephlopods have an ___.

open circulatory system

The ___ is the hard covering that covers the aperture.

operculum (lid)

There are a left and right ___ inside the collar of a squid.

pallial cartilage

The ___ is the area that separates the mantle and the foot.

pallial cavity

The ___ is where the mantle attaches to the bivalvia.

pallial line

In polychaete annelids, one of the two flap-shaped appendages that are used for locomotion or gas exchange is called a ___.

parapodium

The ___ is the reduced internal shell that helps the rigidness of the squid. It is usually a hard amber color.

pen

The ___ releases sperm.

penis

The ___ surrounds the outside of the bivalvia shell.

periostracum

The ___ is the larger respiratory opening of gastropods.

pneumostome

Umbo points away from the ___ of the bivalve.

posterior end

The ___ interlocks the two shells.

pseudocardinal teeth

The ___ scraps off food and transports into mouth for gastropods.

radula (tooth tongue)

The ___ is the portion of digestive tract leading to the anus.

rectum

All non-cephalopod molluscs have a ___, a ___, ___, and a ___.

reduced coelom muscular foot shells (=valves) mantle

The ___ withdraw the bivalvia foot inside sells.

retractors

There is one lateral tooth on the ___ valve.

right

The ink is expelled into the water through the ___.

siphon

The ___ are to filter out food.

siphons with apertures

Gastropoda are ___, ___, ___, and ___.

snails slugs conchs whelks

The eyes of gastropods are ___ on their tentacles.

sometimes

The ___ of a male crayfish is on the base segment of the fourth pair of walking legs.

sperm duct opening

The ___ packages the sperm. It is usually white and lumpy in the squid.

spermatophoric gland

The ___ stores the sperm. It is usually triangular in the squid.

spermatophoric sac

The ___ is a series of whorls.

spire

Cephalopoda are ___ and ___.

squids octopuses

The ___ is a cluster of nerves that is in the shape of a star on both sides of the squid's neck.

stellate ganglion

The ___ produce sperm.

testes

systematic heart

the ___ receives oxygenated blood from the gills and pumps it throughout the body.

The ___ is the lower half of the legs that moves and allows the grasshopper to jump.

tibia

The ___ is the oldest part of the clam.

umbo

The ___ conducts nervous impulses for annelids.

ventral nerve cord

The ___ is the oval bulge at the top anterior of the bivalve. It contains the digestive organs.

visceral mass

The crayfish has a pair of ___ on each (four) segment.

walking legs

The ___ is a curvature of the shell.

whorl


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