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41 Cards in this Set
- Front
- Back
Pylome
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The hemispherical opening of the extracellular test
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Chromoalveolate hypothesis
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It is believed that an endosymbiosis with a red alga gave rise to a plastid ancestor for all of this group
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alveoli
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flatten, membrane bounded sacs or cavities that are just beneath the outer cell membrane
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Cingulum
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The deep equatorial cingulum of Ceratium accomadates the transverse flagellum |
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Sulcus
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The less distinc sulcus of Ceratium contains the posterier, trailing flagellum |
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Spine
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found on Ceratium, they help keep the organism at a certain level in the water column |
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apical complex
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characteristic of apicomplexans, is contructed of microtubules and helps attach the parasite to the host cell and releases a substance that causes the host cell membrane to invaginate and draw the paracite into its cytoplasm
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sporogeny
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a part of the malaria life cycle in which the parasite increases its population in the mosquito
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schizogony
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a part of the malaria life cycle in which the parasite increases its population in the human host
-->the shizoint ruptures, releasing merozoites into the blood, the merozoites divide in new blood cells |
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gametogony
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a part of the malaria life cycle that produces the gametes in the vertebrate host and once consumed by the mosquito combine to form the zygote --> a mature gametocyte usually occupies the whole erythrocyte and has only one large, pink or dark red nucleus |
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pellicle
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thin skin/cuticle
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cytoproct
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eventually the food vacuole arrives at the cytoproct located just posterior to the cytostome
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stalk
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found in Vorticella, attaches the bell-shaped body to the substratum, contains an array of longitudinal elastic fibrils in its periphery, its core is the spasmoneme |
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sasmoneme
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the core of Voticella's stalk, a longitudinal bundle of contractile fibers, contraction of the sasmin fibers results in the rapid coiling of the stalk and the retraction of the cell body
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macronucleus
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an elongate rod bent more or less into a "C"
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locule
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-found in globigerina |
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axopodia
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-pseudopodia characteristic of radiolarans -stiff due to core of microtubules--> functions the same way that the fibrillar material does in formineifera pseudopods -directed flow of cytoplasm from tip of axopod and back |
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fusiform
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the spindle-like shape of euglena
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metaboly
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the irregular changes in cell shape of euglena
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phototaxic
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organisms that orient themselves towards the light Ex. euglena
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stigma
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used in euglena's phototaxic behavior
located on one side of resevoir wall contains pigments --> red to orange colour |
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contractile vacuole |
osmoregulation amoebas, paramecium, euglena |
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cytostome
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permanent mount of ciliates (ex. paramecium) occupies a fix location and creates food vaculoles |
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tricocyst
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a part of the complex pellicle in ciliates discharged from the surface for defence or to assist in prey capture |
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kinety
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rows of cilia on paramecium
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pyrenoid
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associated with the chloroplasts in euglena |
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zooid
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collection of poylps appear in various types--> feeding gastrozooids, reporductive gonozoods, and defensize dactyle zooids |
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stolon
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creeping, rootlike, lies on the surface of a firm substratum serves as an anchor for the entire colony |
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gastrozooid
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responsible for feeding, which they acomplish by capturing and ingesting zooplankton
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gonozooid
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reproductive and produce medusae by asexual reproduction
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periderm
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a transperent, chitinous exoskeleton that encloses the stems, stolons, and polyps
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medusa bud
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in mature gonozooids, the surface of the blatostyles bears small medusa buds which are produce asexually
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battery
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the clusters of cnidocyes (on tentacles)
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tetramerous
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4 part radial symmetry with most structures occuring in fours or multiples of fours
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pneumatophore
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gas-filled (float) composed of a modified medusoid morph the bubble part of the portuguese man-of-war |
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dactylzooid
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tentacular mouthless zooid in certain hydrozoans that performs tactile and protective functions for the colony.
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gonopore
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medusa buds that never detach to become free swimming
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colloblast
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sticky cells unique to ctenophores used to capture prey
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comb row
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one of 8 rows of fused cilia on comb jellies used for locomotion cilia also involved in sensory reception and some function in a mechanical communication system |
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apical sense organ
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a small sport at the aboral end it is a center for gravity detection and control of the comb rows |
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