BIO!!! PART 1
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58 terms
English | Spanish |
|---|---|
 Multicellular hollow ball following mitosis of the zygote | Blastula |
| The inward folding of one side of the embryo | Gastrulation |
| Inner germ layer. Creates the epithelial lining of the digestive tract | Endoderm |
| Outer germ later. Creates the skin, nerves, and adrenal medulla | Ectoderm |
| Middle germ layer. Creates the notochord and adrenal cortex | Mesoderm |
| SPIRAL in PROTOSTOMES, DETERMINED. RADIAL in DEUTEROSTOMES, UNDETERMINED. | Cleavage |
| Coelom forms from splits in the mesoderm | Schizacoelous coelom formation |
| Coelom forms from folds in archentron | Enterocoelous formation |
| Protostome: Mouth first Deuterostome: Anus first | Blastopore fate |
| Sexually immature form of an animal | Larva |
| Development that transforms animal larva into adults | Metamorphosis |
| Determine the controlled expression of genes, and lay out the basic body plan | Hox Genes |
| False tissues, sponges | Parazoans |
| True tissues, everything else | Eumatozoans |
| Back | Dorsal |
| Front(stomach) | Ventral |
| Head | Anterior |
| Tail | Posterior |
| False coelom, partially lined with mesoderm tissue | Pseudocoelomate |
| no coelom | Acoelomate |
| fliud filled body cavity completly lined by mesoderm derived tissue | Coelmate |
| Planes of division are diagonal to vertical axis | spiral cleavage |
| Planes of division are parallel or perpendicular | Radial clevage |
| Lophotrochozoa and Ecdysozoa | Name the two main protostome clades |
| Shedding of exoskeleton | Ecdysis |
| Larval stage of annelids and Mollusks | Trochophore larva |
| A horseshoe shaped crown of ciliated tentacles used for feeding | Lophophore |
| Last period of the Pre-cambrian era | Edicarian period |
| Rich fossil assemblage that includes the first animals with hard exoskeletons. | Cambrian explosion |
| Central cavity of the sponge | Spongocoel |
| The opening through which water flows out | Osculum |
| Collar cells; inside of the spongeocoel, generate a water current to trap food particles that are ingested by phagocytosis | Choanocytes |
| gelatinous region separating the two layers of sponges | Mesohyl |
| Use pseudopodia, take up food from water and choanocytes, and carry nutrients to cells. | Amoebocytes |
| Yes. Eggs reside in the mesohyl, and the sperm is carried out into the water by water currents | Are sponges hermaphorodites? How do they fetilize? |
| Gastrovascular cavity, Radial symmetry, cnidocytes | Cnidaria |
| Sessile structure; cylindrical, adhere to substratum and extend tentacles for prey | Polyp |
| Mouth down version of polp. Moves freely by plagmacy; tentacled | Medusa |
| Same organism, different stages. Organism can be either, or both | Polyp vs Medusa |
| Stinging cells; contained nematocysts, which are teh stinging capsules | Cnidocytes |
| Marin and freshwater, both stages (corals) | Hydrozoa |
| marine, poply stage reduced (jellies) | Scyphozoa |
| Marine, medusa absent (sea anemones) | Anthozoa |
| Comb jellies, contain colloblasts. | Ctenophora |
| "lasso cells"; secrete slimy glue that captures organism, which they wipe off into their mouths. | Colloblasts |
| Original bilateral animals | Uribilateria |
| Acoelomates(triploblastics) with gastrovascular cavities; bilateral. Diffusino takes place across membranes. MANUS. Have cephalization, can reproduce asexually by splitting in half then growing two worms, or sexually (hermaphrodites) | Platyhelminthes |
| Mostly marine, free living flatworms | Turbellaria |
| Parasits, both freshwater and marine | Monogenea |
| Parasites, two suckers | trematoda |
| Tapeworms, scolex (head), parasites | Cestoida |
| Tiny freshwater animals, have complete digestive tract. Pseudocoelomates with jaws, cilian | Rotifers |
| Females being created from unfertilized eggs. Could be males too | Parthogenesis |
| Coelomates with cilliated tentacles around mouth (lophophores) | Lophophorates |
| Resemble mosses, but animals. | Bryozoans |
| Tube dwelling marine worms | Phoronids |
| Resemble clams and bivalve mollusks, but two halfs are ventral and dorsal, rather than lateral in clams. Live by being attached to stalk | Brachipods |
| Acoelomate, but contains a fluid-sac that may be a reduced coelom. Have closed circulatory system, but no heart. Blood is pumped by muscles squeezing the vessels | Nemertea |
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