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Zoology
lecture 9, test 2
| Question | Answer |
|---|---|
| ;' | ' looks like one but it's a colony, have' tentacles that trail back 10s of ft and when you see 10 and don't feel much, it's actually 1000s and you go into shock and go under. They drift. not jellyfish |
| 'part of P. Man-o-war that survives; | 'Nidosists with triggers are only part that survive when they are beached' |
| 'schyphozoa' | 'true jellyfish,have transition b/w polyp and medusa stage, mvmnt-pulse up & dwn' |
| 'Portuguese Man-o-war | ' looks like 1 but it's a colony, have tentacles that trail back 10s of ft and when you see 10 and don't feel much, it's actually 1000s and go into shock and go under. They drift. Nidocysts with triggers are only part that survive when beached |
| 'Schyphozoa | '-true jellyfish, have transition b/w polyp and medusa stage, mvmnt-pulse up & dwn; ciliated polyp' |
| 'a. Ephyra'' | '-bud off into baby jellyfish, asexual |
| 'b. Strobalation | 'budding of jellyfish |
| 'Anthozoa' | 'sessile, colonial |
| 'a. Aneones- | ' tentacles hollow, divided into 6 = pamrts, stay in 1 place to feed; tentacles vary by species but get multiples of 6, shallow water mostly |
| 'b. Corals' | 'colonial, begin w/polyp, secrete holdfast to plaster in place, asexual; in sub lateral region. Grow to surface of water. Once corrosion is started (from predators) hard to stop. Most fisheries take place here |
| 'i. Octacoral | '(soft) have 8 tentacles, colony has whip |
| 'ii. Hexacoral- | '(hard) critical group to marine animals |
| '1) Tablum | ' -pure calcium carbonate secreted. Has dimples with depressions called thecum. |
| 'Thecum- | ' a) equal distance in space |
| '4. P. Platyhelminthes | '-monesious, have thick layer of mucus they swim across |
| 'i. Epidermis | ' -layer of cells like skin - |
| 'ii. Skeleton | 'muscular spongy, protecting cells |
| 'iii. Muscle | '-well devpd, work against spongy packing, 3 layers going different directions. They get wide, skinny, flat |
| 'iv. Digestive system | ' -food in and out same place |
| 'vi. Excretory system- | ' byproducts of ammonia, equally distributed ducts that eventually lead to outside. Flush out with water continuously; cilia forces fluid down but pulls in fluid from other directions |
| 'a. Turbellaria | ' -free living aquatic/marine/terrestrial (if warm and damp) |
| 'i. Asexual repr | ' -pinch off into new zooid. Slice into many pieces and grow back unless each piece is smaller than 1 cubic millimeter |
| 'ii. Sexual repr- | ' monoecious, syrus injects sperm into body cavity; some have genital pores |
| 'c. Trematoda | ' c(flukes)-need to understand their enemy, liver, water-host is usually mollusc like snail |
| 'blood flukes found in: | ' intestinal and blatter veins b/c hold stuff that's passed out |
| 'i) blood flukes Pass to others thru | ' urine or fecal material e.g. priests in cistern to become more holy |
| 'blood fluke | ' ii) Infected cyst hatches out snail. Tadpole the snail hatches out is cercaria iii) They have a road map of maturation and catch a ride to where they need to be iv) Schistosomiasis- |
| 'v) blood fluke Problem in areas with and cause damage in; e.g. | unclean water. different areas in your body. Tissue dies, have inflammation vi)exposing self to blood fluke of birds thru stalk tank. Birds pass all waste at once. If snail around they can pass to you. They won't hurt you, just cause itching and red spots |
| d. Cestoda- | i. Tapeworms-reside in intestine, hav 2 muscle layers, dnt hav digestive system. go dwn w/ur food nd stay anchord by scolex-hooks, suckers, some w/tentacles; cross inject sperm. |
| cestoda | 'Proglottids at end hv eggs nd r mature nd pass off 1) If hv grain beetle, cn gt tapeworm. Cydated cysts cn get siz of bball n ur body |
| 'Pseudocoelomates | '-dioecious, class rotifera, nematoda |
| 'a. Rotifera | ' -tiny-microscopic, fresh water |
| ' i. Wheel animacule | '-all females, produce eggs by mitosis-allows for population explosion-Parthenogenesis; also produce eggs by meiosis (sexual)-only see males in fall. Produce sperm by mitosis. 2 copies of info=F, 1 copy = M. |
| 'Mastox | '-teeth they feed with |
| 'Nematoda- | 'everywhere, scavengers, parasites; mostly free living; some microscopic and some several feet long, sexually dimorphic; all have same # of cells; normally nerve reaches out but muscle reaches out on these |
| 'Eutely | '-end up with many cells |
| 'Pinworm- | 'commensal, live in colon. |
| 'iii. Trichina worm- | ' trichinosis-change color, have it for life but don’t give it to others. Get it from eating meat that isn't cooked or not well enough. Most likely in pork because they eat anything but also in carnivores. |
| 'iv. Filarial worm- | ' blood parasite; heart worm and if gets in dog damage can not go back. Microfilarial worms can be picked up by mesquitoes and usually get in dogs. If get in appendages of humans called elephantidis. You can't get any better |
| cnidarians | derived from diploblastic animals |
| cnidocytes are primarily for: | stinging prey |
Created by:
Jamie D
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