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Bio quizz 2
| Term | Definition |
|---|---|
| Phylum Echinodermata include what classes? | +Crinoidea +Ophiuroidea +Echinoidea +Asteroidea +Holothuroidea |
| What are the characteristics of phylum Echinodermata? | +Nearly marine organisms +Yound organisms are Bilaterally symmetrical +Adults display a parttern of pentaradial symmetry based on five-point design. |
| Another characteristics of phylum Echinodermata? | +have no brain, head, thus no centralization of nervous control. +They have a nerve ring with nerves radiating around the body +The skin covers endoskeleton composed primarily of calcium carbonate ossicles ( xuong cot) |
| What is Dermal branchiae? | +Allow gas exchange to occur bw the outer seawater and inner coelomic fluid. |
| Echinoderms have a respiratory system? | no, it doesn't |
| What is fuction of Coelom in phylum Echinodermata? | +Circulates gases and nutrients throughout the body. |
| What is water vascular system? | +This system uses seawater to generate hydraulic pressure that powers their tube feet for locomotion and for capturing prey. |
| Special thing about phylum Echinodermata | The only group of animals that possess a water vascular system. |
| Class Crinoidea includes? | +sea lilies, feather stars. |
| What are the characteristics of class Crinoidea? | +Stalk present and attached to aboral surface +Mouth and anus both present on oral surface +Branched with feathery pinnules (phan la nho co long) +Madreporite absent |
| Class Ophiuroidea includes? | Brittle stars |
| Class Echinoidea includes? | +Sea urchins, sand dollars |
| What are the characteristics of ophiuroidea? | +Long, slender arms distinct from central disc +tube feet lack suckers and are not used for locomotion +No ambulacral grooves +madreporite on oral surface (next to the mouth) |
| What are the characteristics of Echinoidea? | +Body spherical or disc-shaped without arms +endoskeletal plates fused (Dinh lai) to form test +Tube feet with suckers +well-developed, movable spines ( gai co the di chuyen) |
| Class Asteroidea includes? | + Sea stars |
| What are the characteristics of Asteroidea? | +Broad arms indistinct from central disc +Tube feet with suckers present in ambulacral grooves +Anus and madreporite present on abdoral surface |
| Class Holothuroidea includes | Sea cucumbers |
| What are the characteristics? | + Body soft and cylindrical( hinh tru) and without arms +spines absent +tube feet with suckers (Voi bu) +mouth surrounded by branching tentacles (Voi nho) +madreporite internal |
| What phylum does echinoderms share a close evolutionary link to? | +Chordates |
| Evidence for the common ancestry of Echinoderms with Chordates? | +can be seen best in embryological( Phoi thai) pathways +Both deuterostomes meaning that their mouths develop from the second embryonic opening +Exhibit indeterminate development +embryonic cells divided by radial cleavage ( su phan chia) |
| Another things about Deuterostomes compare to Protosome ? | + The anus develops from the first embryonic opening |
| All others bilateral invertebrates ( dong vat khong xuong song ) are protostomes or Deuterostomes? | Protostomes |
| What are the characteristics of Protostomes? | +Mouth develops from the first embronic opening + Exhibit determinate development +Embryonic cells divide by spiral cleavage |
| What are the characteristics of sea lilies? | +have the stalk that attaches tit to the ocean floor or reef +small jointed appendages called * cirri* ( encircle the stalk and are used to prop ( chong do) themselves or to move about the ocean floor) +Lack if a madreporite |
| Continue characteristics of sea lilies | +the body wall is composed of an outer layer, Calcareous ossicles, covered by a thin, poorly developed epidermis. +the calyx contains the digestive and reproductive organs. +contains five flexible, highly branched arms with feathery extensions (Pinnules |
| What is the function pinnules of sea lilies? | +contain a sticky muchs (chat nhay dinh) to capture small food . |
| Where is mouth and anus located in sea lilies (Crinoids)? | On oral surface. (surface point upward and away from the stalk |
| What are the characteristics of brittle stars? | +5 long, slender arms with which they rapidly scurry ( chay tron) and readily cast off if grabbed by a predator +The arms are distinctly demarcated ( phan ranh gioi) from the central disc +lack suckers and are not used for locomotion +filter feeders |
| What are the characteristics of Sea Urchins and Sand Dollars, | + have long , rigid, movable spines,for locomotion and defense (Exude toxins) +the ossicles (xuong cot) underneat the epidermis are fused together,forming large plates that constitute the solid, inflexible test. |
| Continue characteristics of Sea Urchins and Sand Dollars | +have very short , velvety ( Muot) spines covered in cilia that allow them to move across the seabed +highly extensible tube feet occur in rows along the body +Small pedicellariae are present for cleaning the surface of parasites and debris(manhvun) |
| Where does repiration occurs in Sea Urchins and Sand Dollars? | + Tiny skin gills (dermal branchiae) located in rows along the body |
| Sea urchins and sand dollars are dioecious or monoecious ? reproduction? | +Dioecious -Sperm or eggs are release through the genital pores on the aboral surface. +fertilization is external in echinoids. |
| What are the characteristics of sea stars? | +the underside of their arms are covered with tube feet, bearing suckers that are used for both locomotion and capture prey, +flattened body shape |
| What are the characteristics of digestive system in sea stars? | +The mouth, located on the oral side, leads through a short esophagus ( thuc quan) to the muscular " cardiac stomach" +Connected to the cardiac stomach is the thin-walled, pyloric stocmach |
| Continue the characteristics of disgestive system in sea stars? | +Passing aborally from the pyloric stomach is a short intestine +attached to the intestine are small, branched , rectal ceca( truc trang) that increase the absorptive surface area of the intestine +Undigestes wastes are eliminated through anus. |
| Characteristics of reproductive system in sea star? | Consists of pairs of gonads ( tuyen sinh duc) housed along the interior, oral surfaces of each arm, underneath the digestive glands. +Dioecious +fertilization is external |
| What are the characteristics of Sea cucumber? | +Cylindrical, soft-bodied, sluggish ( cham chap), filter-feeding +Their tough, leathery epidermis lacks spines, pedicellariae, and dermal branchiae + Lack circulatory sys and use coelomic fluid as the circulatory medium . |
| Special characteristics of seac cucumber's digestive system? | + Contains a muscular pharynx, small stomach, and a greatly elongated intestine leading to annus. +the tube feet are modified into feathery tentacles( For capturing suspended food particles |
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changbomht
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