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Chapter 29 Review Echinoderms and Invertebrate Chordates

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Chapter 29 Review Echinoderms and Invertebrate Chordates Charles Page High School Dr. Stephen L. Cotton Chapter 29 Review Echinoderms Which class of echinoderms ... – PowerPoint PPT presentation

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Title: Chapter 29 Review Echinoderms and Invertebrate Chordates


1
Chapter 29 ReviewEchinoderms and Invertebrate
Chordates
  • Charles Page High School
  • Dr. Stephen L. Cotton

2
Chapter 29 ReviewEchinoderms
  • Which class of echinoderms most closely
    resembles the starfish class? Brittle stars
  • As the larvae of echinoderms become adults, their
    form changes from bilateral symmetry to radial
    symmetry.

3
Chapter 29 ReviewEchinoderms
  • The skeleton of an echinoderm is made up of
    plates
  • In echinoderms, the water vascular system is
    involved with what type of activities?
    Respiration, movement, internal transport,
    feeding, excretion
  • On which side of the starfish is the anus
    located? Aboral

4
Chapter 29 ReviewEchinoderms
  • Which of the following is not a part of the
    echinoderms water vascular system madreporite
    ring canal radial canals skin gills
  • Know the construction of the water vascular
    system of a starfish.

5
Chapter 29 ReviewEchinoderms
  • What are some members of the most ancient class
    of echinoderms? Sea lilies and feather stars
  • Does a starfish have any specialized systems? If
    so, what are they? digestive
  • What is the function of the statocysts? Balance
    and right side up

6
Chapter 29 ReviewEchinoderms
  • What are the echinoderms that resemble warty,
    moving pickles? Sea cucumber
  • Skeletal plates are reduced to tiny vestiges
    inside the soft, muscular body of a sea cucumber
  • What kind of symmetry do the larvae of starfish
    have? bilateral

7
Chapter 29 ReviewEchinoderms
  • Potential anti-cancer and anti-viral drugs are
    produced from chemicals extracted from starfish
    and sea cucumbers
  • Several years ago in a wide area of the Pacific
    Ocean, extensive damage was done to coral reefs
    by the sudden appearance of crown of thorns
    starfish

8
Chapter 29 ReviewEchinoderms
  • In many coastal areas, the distribution of algae
    is controlled by sea urchins
  • Which term is least closely related to the
    others chordate vertebrate invertebrate
    lancelet

9
Chapter 29 ReviewEchinoderms
  • Only during the early part of embryonic life do
    most chordates have a notocord
  • In aquatic chordates, such as lancelets and
    fishes, the pharyngeal slits became the gills

10
Chapter 29 ReviewEchinoderms
  • Unlike most chordates, lancelets lack backbones
  • A segmented nerve and muscle organization is
    found in all living ______.
  • Lancelets move by bending their bodies back and
    forth because they lack apendages

11
Chapter 29 ReviewEchinoderms
  • Some scientists believe that the true chordate
    characteristic is pharyngeal pouches
  • What does the similarity in structure between
    vertebrates and invertebrates indicate about
    their ancestors? Common ancestor

12
Chapter 29 ReviewEchinoderms
  • Know the examples we discussed concerning the
    members of each echinoderm class
  • All chordates display their distinguishing
    characteristics as _____.

13
Chapter 29 ReviewEchinoderms
  • Describe the skeleton of an echinoderm.
  • In some species of echinoderms, gas exchange
    occurs through which of the following the anus
    skin gills radial canals statocysts

14
Chapter 29 ReviewEchinoderms
  • Echinoderms, like many invertebrates, excrete
    nitrogen-containing wastes primarily in the form
    of ammonia
  • An adult starfish has radial symmetry.

15
Chapter 29 ReviewEchinoderms
  • Certain stages in the development of echinoderms
    are similar to stages in the development of some
    chordates
  • What do echinoderms use their tube feet for?
    Feeding, respiration, elimination and movement
  • Heart urchins and sand dollars live hidden in
    burrows in mud or sand

16
Chapter 29 ReviewEchinoderms
  • During the day, sea urchins wedge themselves in
    rock crevices
  • Most starfish move along the ocean bottom and
    prey on bivalves
  • The spines of some sea urchins are covered with
    sacs containing blue poisons.

17
Chapter 29 ReviewEchinoderms
  • Several years ago in the Pacific Ocean, extensive
    damage was done to Great Barrier Reef by
    crown-of-thorns starfish.
  • In many coastal areas, the sea urchins control
    the distribution of algae

18
Chapter 29 ReviewEchinoderms
  • The muscles of a lancelet are arranged in paired
    V-shaped units.
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