bio test3

basic body plan of molluscs

head-foot region & visceral mass region

shell of polyplacophora divided into how many parts

8

osphradia

sense organs for sampling water in clams

most mollucs have a __ organ system

open

cephalopods use color changing for…

camo and attracting prey

which mollusc has a closed circulatory system

cephalopod

radula

tounge-like rasping organ in molluscs

mantle

secretes the shell

class scaphopoda 

Mollusc with a tubular shell that opens at both ends are in the class

foot

how clams burrow

3 layers of mollusc shell

• . Peristracum

• 2. Middle prismatic layer

• 3. Inner nacreous layer

umbo

oldest part of shell

arthropod layers of exoskeleton

• Epicuticle

• Exocuticle

• Endocuticle

ecdysis

The nonliving exoskeleton inhibits growth. To cope with this situation, arthropods use a process to shed the old exoskeleton

ommatidia

structure compound eye is made of

macromolecule that characterizes the cuties of arthropods

chitin

what centipedes and millipede belond to

myrapodia

black widow

arachnid with neurotoxic sting that causes paralysis

excretion

malphigian tubules function

2 types of eyes in crustaceans

median and compound

complete metamorphosis

most insects go thru complete change of body from larva to adult

pheromones

chemical communication

bioluminecense

visual communication

mosquito mouthpart

piercing/sucking mouthpart

spiracles

openings to respieratory system in insects

green glands in crayfish

excretion

barnacles

Marine crustaceans that are sessile, secrete calcareous plates, and filter-feed

hyperparasitism

when a parasitic insect is itself parasitized by another insect

madreporite

The calcareous sieve opening into the water vascular system

water-vascular system

the unique vascular system echinoderms have

pyloric and cardiac

2 parts of echinoderm stomach

aristotle’s lantern

complex set of tooth-like structures used in the process of chewing

Crinoidea

echinoderm class lacks pedicellariae and a madreporite, with some species exhibiting stalks

brittle star

most active of all echinoderms

pedicellariae

Keeps body surface free of debris

in deuterostomes, the blastopore develops into the

anus

notochord

The flexible stiffening rod supporting the body in all embryonic and some adult chordate animals

2 chrodate characteristics

notochord, endostyle, bilateral symmetry

pharyngeal pouches and the endostyle

adult tunicates demonstrate only two of the chordate hallmarks

lanclets

subphylum cephalochordata

lancelet blood

lacks erythrocytes

lancelet circulatory system

closed

lancelet circulatory system

no heart

lateral line

detecting water currents and vibrations

what hagfish produe

Copious slime

neuromasts

The lateral-line system of sharks contains special receptor organs

placoid scales

scales the shark has

squalele

what sharks have to be buoyant

Class chondrichthyes

the collective name for sharks, rays and skates

swim bladder

what swimming ability of fish can be attributed to

bony

skeleton Osteichthyes have

operculum function

Increased respiratory efficiency and draw water across gills

external

common mode of reproduction in fishes

Diffusing gas from swim bladder into blood

How is gas removed from the swim bladder in fishes