Invertebrate Zoology
Terms
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- What material normally forms the covering of Foraminifera?
- calcium carbonate
- What phylum is the Chaos in?
- Amoebazoa
- What is the role of the metacercaria in trematodes?
- They allow trematodes to remain stagnant in intermediate hosts until they have been comsumed by the primary host.
- What material normally forms the covering of Radiozoa?
- silica
- List the order of malarial stages, starting with gemetocytes
- Gametocytes, ookinetes, sporozoite, merozoites
- In Porifera, what is the difference between and osculum and an ostium?
- Osculum is the main hole in which water exits. Ostia are the small pores where water enters.
- What are gemmules, and where are they found? (which Phylum?)
- Gemmules are asexually produced resistant buds (the dormant structure) of Porifera
- Name the three classes of Porifera, and talk about what distinguishes them
-
1.Calcarea -- have all three shapes and only have CaCO3 in spicules
2.Demospongiae -- almost all leukonoid and have spongin or silica, but NEVER CaCo3)
3.Hexactinellida -- either leukenoid or synconoid, which spicules of silica - Name the tree types of tenticles and their functions in the Physalia (Hydrozoa, Siphonophora)
-
Dactylozooid: grabbing
Gastrozoids: eating
Gonozoids: mating - What is the locomotion like for Dinozoa?
- two flagella -- one extends backward to propell the animal; the other encircles the body in a transverse groove, causing it to rotate
- In cnidaria, what is the tube where the mouth is called?
- menubrium
- In Chaos, where is cytoplasmic streaming initialized?
- transition of the cytoplasm goes from ectoplasm (more gel) to endoplasm (more fluid)
- How are cnidocytes, cnidocils, and nematocysts related?
- Cnidocytes are the cells in which nematocysts are locates, which fire if the cnidocil is stimulated (through trigger)
- In trematodes, what is the difference between a redia and a cercaria?
- The redia is a larval stage in the trematode life cycle which develops into another anatomically distinct larval stage, the cercaria, which leaves the mother.