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Coelenterata Test
Phyla Porifera, Cnidaria & Ctenophora Test
| Question | Answer |
|---|---|
| How do sponges obtain food? | filtering small organisms from the water |
| What are sponges? | organisms with no tissues, simplest of all animals, and contain cells called choanocytes |
| What are spicules? | spicules are hard needles in the wall of a sponge |
| What is the outer most tissue layer of a cnidarian? | ectoderm |
| What type of symmetry do sponges have? | asymmetry |
| How do sponges reproduce? | budding, a break-up of original parent into fragments, and sexually with sperm and egg |
| Where does digestion in Cnidarians begin? | gastrovascular cavity |
| Sponges and cnidarians remove wastes through: | diffusion |
| Which organism is at the bottom of the phylogenetic tree: Sponges, Cnidarians or Ctenophores? | sponges |
| These cells in cnidarians are responsible for paralyzing prey: | cnidocytes |
| What is a gastrovascular cavity? | digestive cavity with one opening |
| What are hermaphrodites? | produce both eggs and sperm |
| Adult sponges have this characteristic: | have body walls with many pores |
| In sponges, currents are created by these cells: | choanocytes |
| Water leaves a sponge through this opening: | osculum |
| Sponges are harvested because of this middle layer that contains: | a protein called spongin which holds water and releases it when squeezed. |
| What is one characteristic of a sea anemone? | polyp |
| What is the name of the cells that carry nutrients to the entire body of a sponge? | amoebocytes |
| What is the other name for ctenophores? | comb jellies |
| What type of specialized cells is in ctenophores? | collarblasts |
| What does the ectoderm become as the cnidarians develop? | skin and nervous system |
| What is the name of the harpoons that contain venom in cnidarians? | nematocytes |
| What is the tube-shaped body form in some cnidarians? | polyp |
| These cnidarians provide shelter for many kinds of animals: | sea anemone |
| A Portuguese man of war is an example of: | hydrozoan colony |
| These organisms are sessile as an adult: | sponge, sea anemone, sea whip |
| What is the jellylike substance between the endoderm and ectoderm of a jellyfish called? | mesoglea |
| Do cnidarians and sponges have true tissues? | No |
| Which phyla display bioluminescence? | ctenophora |
| Which phyla can sting? | cnidarians |
| Are cnidarians, sponges and ctenophores simple animals with none having an organ level of cellular organization? | Yes |
| What is planktonic? Which animals are recognized as planktonic carnivores? | floating organisms; jelly fish |
| Which phyla has a skeleton made of tiny, hard particles of calcium carbonate? | Porifera (sponges) |
| Which phylum defends itself by not tasting and smelling very good to larger predators? | ctenophora |
| What phyla does order physalia belong to? | cnidarians |
| Which phyla has bottom dwelling organisms that have branched tentacles and look more like sea slugs? | ctenophora |
| Which phyla has tiny pores that allow water to enter: | porifera |
| Which phyla has both a medusa and polyp stage: | cnidarians |
| Which phyla has a skeleton made of silica? | porifera |
| Be able to describe 3 differences and 3 similarities between Phyla Porifera, Cnidaria and Ctenophora. | (see Venn diagram) |
Created by:
jlafferty
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