Locate the central disk and the aboral madreporite 3. Examine the external and internal anatomy of the starfish.
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Using your diagram sheets and the pictures below to locate the following structures and note their functions.
Starfish dissection labeled. Label the central disc arms and madreporite on Figure 1. The Asterias Forbesi or also known as the starfish is a common animal that lives in the ocean floors and reefs. Dissection of Ambulacral Water Vascular.
The other arms form the trivium. Place the starfish on your dissection tray with its aboral surface facing upward. Label the structures on the figures as indicated in the lab procedures.
Label and draw in if necessary the madreporite dorsal spine ray central disc and. There are 12 files total. A full-color photographic starfish dissection guide dissecting scissors a teasing needle and a styrofoam dissecting tray.
This is a Dissection Unit for Starfish Clams Fish and Frogs. Figure 1 - Aboral Surface. The Starfish has a pentamerous radial symmetry.
A pair of arms the bivium borders the madreporite. The complete taxonomy is. Distinguish the oral side from the aboral side.
There are over 6000 species. The file contains a power point for each animal and covers the basic anatomy. Preserved starfish dissecting pan scissors scalpel forceps T-pins pencil lab apron safety glasses Procedure.
Diagram of starfish anatomy. Aboral Surface 1 Obtain a preserved starfish and rinse off any preservative with water. A pair of arms the bivium borders the madreporite.
Kindom- animalia phylum- echinodermata class- asteroidean order- forcipulata family- ateriidae and genus- asterias or pisasters. Even though sea stars are relatively simple animals theres still a lot to learn about their anatomy. These are the five extensions that you see projecting from the middle of the starfish.
Oral Surface 7 Turn the starfish over to its ventral or oral surface underside. Distinguish the oral side from the aboral side. Echinoderms mean spiny skin in Greek.
Dissection of Alimentary System 2. Starfish Dissection Post Lab 25 marks - 2 125 marks. Many but not all echinoderms have spiny skin.
Echinoderms mean spiny skin in Greek. Echinoderms usually have five appendages arms or rays but there Continue reading Starfish Dissection. Figure 1 -Aboral Surface II.
BIOLOGY TWO DISSECTION THE STARFISH PHYLUM ECHINODERMATA CLASS ASTEROIDEA PART ONE EXTERNAL ANATOMY. Starfish are actually considered sea stars by todays marine biologists because these creatures are not actually fish but echinoderms. It also contains full colored real pictures of each animal to use as a dissecting guide.
Answer the questions once you are finished your dissection and have cleaned everything up. There are over 6000 species. Arms or Rays.
The starfish utilized in this dissection exercise is of the order. BIOLOGY TWO DISSECTION THE STARFISH PHYLUM ECHINODERMATA CLASS ASTEROIDEA PART ONE EXTERNAL ANATOMY. In this article we will discuss about the dissection of star fish.
An interesting characteristic of Asteroids is the ability to. Label the structures on the figures as indicated in the lab procedures. External Anatomy of Starfish Cont 6 Identify spines short all over arboreal surface 7 Identify Pedicellariae pincher-like structures near base of spines 8 Eyespots Small one on each end of each arm 9 Ambulacral grooves along oral surface of each ray 10 Ambulacral spines 11 tube feet.
Echinoderms are radially symmetrical animals that are only found in the sea there are none on land or in fresh water. Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. They are related to sand dollars sea urchins and sea cucumbers and all of these organisms have five-point radial symmetry.
Echinoderms usually have five appendages arms or rays but there are Continue reading Starfish Dissection. This starfish dissection kit comes with a preserved starfish dissection specimen plus all of the dissection tools you need for an engaging and interactive dissection experience. Label these on figure 1.
You can laminate them to use for years. Get everything you need for dissecting a starfish also known as a sea star. They are invertebrates and the way their bodies function differ greatly from.
Many but not all echinoderms have spiny skin. 6 Feel the upper surface of the starfish for spines. Preserved starfish dissecting pan scissors scalpel forceps T-pins pencil lab apron safety glasses Procedure.
There are five main sections to their anatomy that are arranged around a. Label and draw in if necessary the madreporite dorsal spine ray central disc and eyespots 5 pts Figure 2 - Oral Surface. Examine the external and internal anatomy of the starfish.
Answer the questions once you are finished your dissection and have cleaned everything up. These spines protect the starfish and are part of their internal skeleton. About 1700 species of starfish have been described living in marine coastal waters from the north to the south poles.
Aboral Surface 1 Obtain a preserved starfish and rinse off any preservative with water. Figure 1 - Aboral Surface. Echinoderms are radially symmetrical animals that are only found in the sea there are none on land or in fresh water.
Locate the central disk and the aboral madreporite 3. In this simple dissection of a starfish youll learn various parts of the echinoderm anatomy how starfish eat and why starfish shouldnt be called starfish.
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