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103 Cards in this Set

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extensions of single epithelial cellls associated with the tentacles of _________ giving these structure a plum-like appearance.
pinnules
Pogonophora
specialized tissue of ________ which contains mutualistic bacteria.
trophosome
Pogonophora
The posterior-most segmented body part of _________ which serves as an anchor.
opisthosoma
Pogonophorans
The anterior-most , tip-like region of ________ &_________which precedes the tentacles.
cepahlic lobe

Pogonophorans
Echiurans
The anterior region of many invertebrates including members of the Phylum _________
prosoma
Pogonophora
recently discovered and only 80 species known
Pogonophora
generally deep water dwellers
Pogonophora
sessile and live within chitinous tube.
Pogonophora
species are worm-like and long
Pogonophora
body is composed of prosoma with tentacle -like structures a long truck and short opisthosoma.
Pogonophora
prosoma contains consists of cephalic lobe and a posterior glandular region which secretes tube.
Pogonophora
called "beard-bearer" because of tentacles
Pogonophora
lack an alimentary canal therefore do not have a mouth for feeding
Pogonophora
has a wedd-developed, closed blood-vascular system present.
Pogonophora
a nerve plexus is present at the base of th epithlium and a ventral nerve cord is present.
Pogonophora
the general red colors of these organims is due to vascular hemoglobin
Pogonophora
species are dioecious and spermatophores are typically employed in the fertilization process. Young are brooded in most species.
Pogonophora
anterior, tentacle-bearing region of the body of the ________
introvert
siphunculids
posterior region of the ____ and other invertebrates
trunk
siphunculids
peritoneal cell complexes involved in excretion in _______
urns
siphunculids
paired chem-receptive organs of _______ located on dorsal surface
nuchal organs
siphunculids
called "peanut worms", live in protective homes
siphunculids
most species are lacking in bright coloration
siphunculids
most are less than 10 cm
siphunculids
body is cylindrical divided in introvert and trunk.
siphunculids
introvert has ring of tenacles for feeding
siphunculids
has a single spacious coelem and septa are lacking
siphunculids
feed on organic materials captured by tenatcles.
siphunculids
digestive system complete, forming u shped loop in trunk
siphunculids
digestive tract is composed of esophagus, coiled intestine and straight rectum
siphunculids
lack circulatoru and respiratory structures
siphunculids
excretory system has metanephridia and urns
siphunculids
tenatcles are operated by independent hydraulic system with compensation sacs
siphunculids
a groove-like region on the ventral surface of the proboscis of _______ formed by the enrolled basal edges of the proboscis.
gutter
Echiura
marine worms similar to sipunculids.
Echiura
body is composed of cephalic lobe and trunck
Echiura
feed on detritus which adheres to mucus on proboscis. food goes from gutter to coiled digestive tract.
Echiura
digestive tract is long, has esophagus, gizzard, stomach, long intestine, rectum and anus
Echiura
species have a closed circulatory system
Echiura
respiration is by simple diffusion.
Echiura
excretion paired with metanephridia
Echiura
reproductive tissue develops from specialized mesenteries which releases gametes into coelom.
Echiura
trochophore are usually produced and brief metameric stage is seen
Echiura
"water bears"
Tardigrada
most live on mosses or lichens
Tardigrada
4 pairs of short clawed legs
Tardigrada
have a smooth or sculptured proteinacious cuticle whihc lacks chitin
Tardigrada
body wall muscles not in layers but consist of individual strands
Tardigrada
have secondary body cavity termed as hemocoel or pseudocoel
Tardigrada
feed on plant cells.
Tardigrada
feeding structure consists of a pair of sharp stylets extending from the sheaths of walls of buccal tube.
Tardigrada
no circulatory or respiratory organs
Tardigrada
excretion is by 3 glands which merge with hind gut sometimes called Malpighian tubules
Tardigrada
known to survive extended cold period in cryptobiotic state
Tardigrada
parthogenesis is seen
Tardigrada
develop an enterocoel
Tardigrada
"tongue worms"
Pentastomida
parasitic within respiratory tract of vertebrates
Pentastomida
tropical lizards are common hosts
Pentastomida
grasp lung tissue with claws which are secreted by hook glands
Pentastomida
muscular pharynx sucks blood into gut
Pentastomida
anticoagulants secreted by cephalic gland
Pentastomida
circulatory, respiratory and excretory organs are absent
Pentastomida
have sophisticated reproductive organs and complex life cycle
Pentastomida
Onychophora bridges gap between
annelids and arthropods
simlilar genuses occupy Africa and South America
Onychophora
they are very vulnerbale to water loss
Onychophora
each body segment houses nepohridia
Onychophora
excretory organs comprise nephrostome, tubule, bladder and nephridiophore
Onychophora
nervous sytem includes a suprapharyngeal brain, circumenteric commissures and 2 venatral nerve cords
Onychophora
crawl very slowly, locomotion depends partly on hydrostatic skeleton
Onychophora
defend themsleves with adhesive secretions
Onychophora
what is grouped into the Locophorates?
bryozoana, entoprocta, phoronida, brachiopoda
have a tentacle like organ which is swept through water to collect food
Lophophorates
lophophore
what 2 phyla of Locophores are closer to protostome line?

deuterostome line?
bryozoans and entopracta

phoronida and brachiopoda
anterior coelomic compartment of many _____
protocoel
Lophophorates
the midbody coelomic compartment of most _______
mesocoel
Lophophorates
the posterior-most coelomic compartment in _____
metacoel
Lophophorates
an extensible crown-like feeding structure composed of ciliated tentacles which surrounds mouth of ________
Lophophore
Lophophorates
the exoskeleton of an indiviual ________
zoecium
bryozoan
a cord of tissue connecting the gut into the body wall of a ______. may serve a transport function.
funiculus
bryozoan
the central body of an individual ______
polypide
bryozoan
an individual member of a colony such as seen in ________
zooid
Bryozoan
an opening on the ____ lophophore through whihc eggs are released
coelomopore
Bryozoan
an elevated extension of the _____ lophophpre on which the coelomopore is located.
intertenacular organ
an envaginated chamber of the body wall of a ________ which houses a developing embryo.
ovicell
bryozoan
a dark cellular cluster representing the remnants of the degenerating polypide ina brooding ________.
bryozoan
brown body
The feeding trochophore-like larva of nonbrroidng ______.
cyphonautes
Bryozoan
a resistant, dispersive, reproductive body formed along the funiculus of freshwater _______.
statoblasts
bryozoan
the original founder zooid of a ________ colony.
ancestrula
Bryozoan
"moss animals"
Bryozoa and Ectoprocta
most species are encased in a protective covering called zoecium.
Bryozoan
body wall is unmuscularized with unmovable calcerous exoskeletons.
Bryozoa and Ectoprocta
standard feeding morphs are called autozoids while various herozoid are specialzed for defense, sanitation and reproduction.
Bryozoa and Ectoprocta
very minute and can survive without special organs for internal transport, gas exchange and waste removal.
Bryozoa and Ectoprocta
eggs may be released through an opening on the lophorphore called...
coelomophore
Bryozoan
sometimes coelophore is elevated on the...
intertentacular organ
Bryozoan
in the cheilostomes an ovicell houses the embryo
Bryozoan
in nonbrroding species, a feeding trophophore-like cyphonautes larva drifts for several months
Bryozoan
lone zooid called
ancestrula
Bryozoan
what are common in freshwater bryozoans?
statocysts
3 classes of Bryozoans
Class Stenolaemata
Class Gymnolaemata
Class Phylactolaemata
the water vascular system which hydraulically operates the tube feet in ______
ambulacral system
echinoderms