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103 Cards in this Set
- Front
- Back
extensions of single epithelial cellls associated with the tentacles of _________ giving these structure a plum-like appearance.
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pinnules
Pogonophora |
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specialized tissue of ________ which contains mutualistic bacteria.
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trophosome
Pogonophora |
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The posterior-most segmented body part of _________ which serves as an anchor.
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opisthosoma
Pogonophorans |
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The anterior-most , tip-like region of ________ &_________which precedes the tentacles.
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cepahlic lobe
Pogonophorans Echiurans |
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The anterior region of many invertebrates including members of the Phylum _________
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prosoma
Pogonophora |
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recently discovered and only 80 species known
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Pogonophora
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generally deep water dwellers
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Pogonophora
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sessile and live within chitinous tube.
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Pogonophora
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species are worm-like and long
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Pogonophora
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body is composed of prosoma with tentacle -like structures a long truck and short opisthosoma.
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Pogonophora
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prosoma contains consists of cephalic lobe and a posterior glandular region which secretes tube.
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Pogonophora
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called "beard-bearer" because of tentacles
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Pogonophora
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lack an alimentary canal therefore do not have a mouth for feeding
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Pogonophora
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has a wedd-developed, closed blood-vascular system present.
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Pogonophora
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a nerve plexus is present at the base of th epithlium and a ventral nerve cord is present.
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Pogonophora
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the general red colors of these organims is due to vascular hemoglobin
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Pogonophora
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species are dioecious and spermatophores are typically employed in the fertilization process. Young are brooded in most species.
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Pogonophora
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anterior, tentacle-bearing region of the body of the ________
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introvert
siphunculids |
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posterior region of the ____ and other invertebrates
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trunk
siphunculids |
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peritoneal cell complexes involved in excretion in _______
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urns
siphunculids |
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paired chem-receptive organs of _______ located on dorsal surface
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nuchal organs
siphunculids |
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called "peanut worms", live in protective homes
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siphunculids
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most species are lacking in bright coloration
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siphunculids
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most are less than 10 cm
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siphunculids
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body is cylindrical divided in introvert and trunk.
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siphunculids
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introvert has ring of tenacles for feeding
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siphunculids
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has a single spacious coelem and septa are lacking
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siphunculids
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feed on organic materials captured by tenatcles.
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siphunculids
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digestive system complete, forming u shped loop in trunk
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siphunculids
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digestive tract is composed of esophagus, coiled intestine and straight rectum
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siphunculids
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lack circulatoru and respiratory structures
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siphunculids
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excretory system has metanephridia and urns
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siphunculids
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tenatcles are operated by independent hydraulic system with compensation sacs
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siphunculids
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a groove-like region on the ventral surface of the proboscis of _______ formed by the enrolled basal edges of the proboscis.
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gutter
Echiura |
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marine worms similar to sipunculids.
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Echiura
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body is composed of cephalic lobe and trunck
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Echiura
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feed on detritus which adheres to mucus on proboscis. food goes from gutter to coiled digestive tract.
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Echiura
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digestive tract is long, has esophagus, gizzard, stomach, long intestine, rectum and anus
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Echiura
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species have a closed circulatory system
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Echiura
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respiration is by simple diffusion.
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Echiura
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excretion paired with metanephridia
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Echiura
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reproductive tissue develops from specialized mesenteries which releases gametes into coelom.
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Echiura
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trochophore are usually produced and brief metameric stage is seen
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Echiura
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"water bears"
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Tardigrada
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most live on mosses or lichens
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Tardigrada
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4 pairs of short clawed legs
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Tardigrada
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have a smooth or sculptured proteinacious cuticle whihc lacks chitin
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Tardigrada
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body wall muscles not in layers but consist of individual strands
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Tardigrada
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have secondary body cavity termed as hemocoel or pseudocoel
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Tardigrada
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feed on plant cells.
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Tardigrada
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feeding structure consists of a pair of sharp stylets extending from the sheaths of walls of buccal tube.
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Tardigrada
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no circulatory or respiratory organs
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Tardigrada
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excretion is by 3 glands which merge with hind gut sometimes called Malpighian tubules
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Tardigrada
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known to survive extended cold period in cryptobiotic state
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Tardigrada
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parthogenesis is seen
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Tardigrada
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develop an enterocoel
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Tardigrada
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"tongue worms"
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Pentastomida
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parasitic within respiratory tract of vertebrates
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Pentastomida
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tropical lizards are common hosts
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Pentastomida
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grasp lung tissue with claws which are secreted by hook glands
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Pentastomida
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muscular pharynx sucks blood into gut
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Pentastomida
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anticoagulants secreted by cephalic gland
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Pentastomida
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circulatory, respiratory and excretory organs are absent
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Pentastomida
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have sophisticated reproductive organs and complex life cycle
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Pentastomida
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Onychophora bridges gap between
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annelids and arthropods
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simlilar genuses occupy Africa and South America
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Onychophora
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they are very vulnerbale to water loss
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Onychophora
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each body segment houses nepohridia
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Onychophora
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excretory organs comprise nephrostome, tubule, bladder and nephridiophore
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Onychophora
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nervous sytem includes a suprapharyngeal brain, circumenteric commissures and 2 venatral nerve cords
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Onychophora
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crawl very slowly, locomotion depends partly on hydrostatic skeleton
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Onychophora
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defend themsleves with adhesive secretions
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Onychophora
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what is grouped into the Locophorates?
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bryozoana, entoprocta, phoronida, brachiopoda
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have a tentacle like organ which is swept through water to collect food
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Lophophorates
lophophore |
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what 2 phyla of Locophores are closer to protostome line?
deuterostome line? |
bryozoans and entopracta
phoronida and brachiopoda |
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anterior coelomic compartment of many _____
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protocoel
Lophophorates |
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the midbody coelomic compartment of most _______
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mesocoel
Lophophorates |
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the posterior-most coelomic compartment in _____
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metacoel
Lophophorates |
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an extensible crown-like feeding structure composed of ciliated tentacles which surrounds mouth of ________
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Lophophore
Lophophorates |
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the exoskeleton of an indiviual ________
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zoecium
bryozoan |
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a cord of tissue connecting the gut into the body wall of a ______. may serve a transport function.
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funiculus
bryozoan |
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the central body of an individual ______
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polypide
bryozoan |
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an individual member of a colony such as seen in ________
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zooid
Bryozoan |
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an opening on the ____ lophophore through whihc eggs are released
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coelomopore
Bryozoan |
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an elevated extension of the _____ lophophpre on which the coelomopore is located.
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intertenacular organ
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an envaginated chamber of the body wall of a ________ which houses a developing embryo.
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ovicell
bryozoan |
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a dark cellular cluster representing the remnants of the degenerating polypide ina brooding ________.
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bryozoan
brown body |
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The feeding trochophore-like larva of nonbrroidng ______.
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cyphonautes
Bryozoan |
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a resistant, dispersive, reproductive body formed along the funiculus of freshwater _______.
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statoblasts
bryozoan |
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the original founder zooid of a ________ colony.
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ancestrula
Bryozoan |
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"moss animals"
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Bryozoa and Ectoprocta
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most species are encased in a protective covering called zoecium.
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Bryozoan
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body wall is unmuscularized with unmovable calcerous exoskeletons.
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Bryozoa and Ectoprocta
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standard feeding morphs are called autozoids while various herozoid are specialzed for defense, sanitation and reproduction.
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Bryozoa and Ectoprocta
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very minute and can survive without special organs for internal transport, gas exchange and waste removal.
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Bryozoa and Ectoprocta
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eggs may be released through an opening on the lophorphore called...
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coelomophore
Bryozoan |
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sometimes coelophore is elevated on the...
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intertentacular organ
Bryozoan |
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in the cheilostomes an ovicell houses the embryo
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Bryozoan
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in nonbrroding species, a feeding trophophore-like cyphonautes larva drifts for several months
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Bryozoan
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lone zooid called
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ancestrula
Bryozoan |
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what are common in freshwater bryozoans?
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statocysts
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3 classes of Bryozoans
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Class Stenolaemata
Class Gymnolaemata Class Phylactolaemata |
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the water vascular system which hydraulically operates the tube feet in ______
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ambulacral system
echinoderms |