WFSC3
Terms
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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