Animal development

• Animals that develop form two germ layers are called


  diploblast
• animals that develop from three germ layers are called?


  triploblast
• the ectoderm gives rise to?


  nervous system and body coverings
• endoderm gives rose to?


  the digestive tissue and organs
• the mesoderm gives rise to?


  Muscles, bones, blood, and connective tissues.
• three germ layer animals have a closed circulatory system
• cleavage is the splitting of the zygote into identical cells
• blastula is 16-23 cell stage of development
• blastopore is the opening into the archenteron that forms during gastrulation
• gastrula is the part of development where the digestive cavity is formed
• animal without a body cavity are called ?

  acoelomate
• animal with body cavity between meso and endoderm are called?


  pseudocoelomate
• animal with body cavity completely lined with meso tissue are called?


  eucoelomate
• Cleavage if Alignment of cells between two poles born on top of old cells are called?


  Radial cleavage
• cleavage of rotated cells of the opposite pole boen keft or right of old cells are called?


  spiral cleavage
• cleavage pattern in which developmental fate of each blastomere is tightly defined is called?


  determinate
• blastomeres act like stem cells and are not yet predetermined into specific cell types are called?


  indeterminate
• meso developed as pouches that are pinched off from ends tissue and then becomes coelom are called?


  enterocoely
• a solid mass of mesoderm splits parts to form hollow opening of coelom called?

  schizocoely
• coelom is a body cavity that contains a fluid filled space allowing for better movement and he formation of organs
• parazoans have no tissue and are simple
• radiata have a radial symmetry and contains cnidarians and ctenophorans
• protostomes contains flatworms, nematodes, mollusks, annelids, and arthroapods
• Protostomes coelom forms from mesoderm cell
• Deuterostomes coelom forms from embryonic gut
• deuterostomes contains echinoderms and chordates
• a group of animals with diff tissue are called?

  Eumetazoa
• phyum of sponges with no symmetry

  Porifera
• outer epithelium is made up if flatten cells. water comes in Ostia and exists through osculum
• mesohyl is the middle lining of filter feeders. spicules needles are made of calcium carbonates
• choanocyst are collar cells that are flagellated that face internally and digest food from water
• what uses a flagellum to digest food from water?

  chanocytes
• Ctenophora are comb jellies
• cnidaria are jellyfishes that are diploblatic with no organs with nemotosysts
• what is the name of the digestion organization of a body plan with one single opening and two layers of the body wall?

  gastrovascular cavity
• hermaphroditic are?


  Organisms with both male and female reproductive organs.
• cniderians use to prey capture is called?

  nematocysts
• Anthozoa are corals with a polyp body form that fall into the Cnidaria phylum
• cubozoa contains box jellies who are dangerous and fall into the cnidarian phylum
• hydrozoa are hydroids with both poly and Medusa form and fall into the Cnidaria phylum