Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Exam 2
From Tessa's in class notes
| Question | Answer |
|---|---|
| Challenges of multicellularity 6 | support, get nutrients and O2 and get rid of cells, protect, maintain homeostasis, coordination, reproduction |
| Universal characteristic traits all animals share 6 | Hetertrophic, eukaryotic, lack cell walls, multicellular as adults, specific intercellular junctions, homeobox genes |
| Specific intercellular junctions | tight junctions (quilting), desmosomes ( rivets), gap junctions (pores) |
| Hox genes | tell embryo where to form which structures, truly distinguish an animal. |
| Common characteristics of animals (10) | extracellular matrix (collagen), true tissues, cephalization, sexual reproduction, diploid dominates, larval/metamorphisis, small sperm/large ovum, z-b-g, symmetry, bilateral orientation |
| true tissues | collection of specialized cells, isolated from other tissues by membranous layers |
| 3 types of symmetry | assymetry (without), radial (along radii), bilateral (two) |
| Ventral/dorsal, anterior/posterior, lateral/medial | ventral (stomach)/dorsal (back), anterior (top)/posterior(bottom), lateral (to the side)/medial (towards the middle) |
| tissue organization | zygote-(cleavage)-morula-(cleavage)-blastula-(gastrulation)-gastrula |
| zygote | sperm fertilizes the egg, they fuse immediately following fertilization |
| morula | solid ball of a few cells, they continue to divide enough cells, it then goes to hollow which is the next step |
| blastula | balloon, there cells continue to divide when there are enough cells, it will invaginate |
| blastopore | hole (belly button) door |
| archenteron | is the tube that leads from the blastapore |
| alimentry canal | path from mouth to anus |
| germ layers 3 | ectoderm, endoderm, mesoderm |
| ectoderm | blue, outer covering, central nervous system |
| endoderm | yellow, lining digestive tract, lungs and liver in some |
| mesoderm | red, forms body cavity, muscles, most other organs between ecto adn endo |
| trioblastic | all 3 layers, only trioblastic can have a body cavity. All bilaterally symmetric animals are triploblastic |
| coelem | body cavity, not all animals have a true body cavity. gastrovascular cavity does not mean a coelem. balloon within a balloon. ours is a fluid filled cushion |
| Do all 3 germ layers guarentee a coelem? | No |
| Acoelomate | no coelem, space between endoderm and ectoderm is entirely filled w/mesoderm. A triploblast without a coelem example: platyhelminthes |
| Psuedocoelem | body cavity is only partially lined with mesoderm |
| Coelmate | true coelem. mesoderm lines both outer and inner and may compartmentalize as well. lines the entire the body cavity. example: nematoda |
| Protostome | spiral cleavage, each tier or layer is twisted, cell specialization occurs early, ceolem forms along the sides, Blastopore becomes mouth |
| Deuterostome | radial cleavage, coelem begins from center, enterocoelous, Blastopore becomes anus. |
| Maintaining homeostasis | keeping a balance between internal and external environments or status quo. Dynamic, subject to so many factors (pH, temp, salinity etc) |
| Sponge: name ostia, oscullum, movement, 5 defining characteristics | water enters ostia, water exits oscullum, sessile locomotion; spongocoel, symmetry, lack of true tissue, choanocytes, lack of digestive system, microcurrent |
| spongocoel, body cavity? | internal cavity of a sponge, no true body cavity |
| Cnidaria (4 classes) | Hydrozoa, scyphozoa, cubozoa, anthozoa |
| Oral arm | Medial arms of a jelly fish, usually used to take in food |
| genus of cnidaria | aurelia, very small itty bitty tentacles, coral polyp, adults are sessil |
| Platyhelminthes (3 classes) | turbellaria, trematoda, cestoda (none are segmented worms) |
| Annelida (3 classes) | polychaeta, oligochaeta, hirudinea (leeches/fluke are a part of this phylum) |
| Mollusca (4 classes) | gastropoda (stomach foot), polyplacophora (many shells), cephalopoda (head foot, split foot), bivalvia (2 shells, no radula) |
| Distinguishing characters of Porifera | Spongin, Spongeceol |
| Distinguishing characters of Cnidaria | Diploblastic, Radial Symmetry |
| Distinguishing characters of Platyhelminthes | Aceolomates |
| Common name and (Taxonomic name) for a member of Cestoda | Tapeworm (Taenia) |
| Common name for a member of Trematoda | Fluke |
| Members of Scyphozoa and character traits | True Jellies (rounded bells, Visable Oral Arms, Free swimming) |
| Members of Hydrozoa and character traits | Same as Scyphozoa but oral arms aren't visable |
| Members of Cubozoa and character traits | Box Jellies (Oral arms aren't visable, Boxy bells, highly toxic, complex eyes_ |
| Members of Anthozoa and character traits | Coral no medusa stage, solitary and/or colonial |
| What polyp is the feeding polyp | Hydranth |
| What polyp is the reproductive polyp | Gonangium |
| what organ does the ectoderm usually form | Central Nervous Systems |
| What organ(s) does the endoderm usually form | Liver, lungs, digestive tract lining |
| What organ(s) does the mesoderm usually form | Musles (also forms body cavities) |
| Steps of zygote development | Zygote(cleavage)- Morula(cleavage)- Blastula(gastrulation)- Gastrula |
| How are cells organized in a Morula and Blastula | Morula-compact ball of cells Blastula - Balloon with cells concentrated on the outside |
| Which organisms have 2 germ layers | Cnidaria |
| How many germ layers do poriferia have | None |
| Which organisms are cephalized | Platyhelminthes, Annelida, Mollusca |
| which organisms are Protostome | Platyhelminthes, Annelida, Mollusca |
Created by:
daisyrux
Popular Biology sets