Mollusks & Echinoderms

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Anonymous
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6067
Filename:
Mollusks & Echinoderms
Updated:
2010-02-04 19:20:36
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Science
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8-9
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  1. ________ bodies usally covered with a __________ shell
    • 1)soft
    • 2) hard
  2. They have a ___________ circulatory system
    Open
  3. A Echinoderm has an ______ skeleton. It travels by means of many tube feet.
    internal
  4. A Echinoderm has a _____ and ______ area. Some have a mouth on the _____ and an ______ on the top.Starfish can actually turn their stomachs outside of their body and insert it into its prey's such as a clam. Echinoderms have a relatively big gut area.
    • 1.) mouth anf stomach
    • 2.) Bottom an anus
  5. A Echinoderm has a _______ excretory system.
    Simple
  6. A Echinoderm has ______ symmetry.
    Radial
  7. A Echinoderm has ______ arms and spines or bumps all over its body. The spines are protective and also help with respiration.
    Five
  8. A Echinoderm is a male or female. The males and females discharge their eggs and sperm into the water where they are fertilized. A female can release one hundred million eggs at once. If a piece of certain echinoderms is chopped off, a new ______ or even a new _______ can regrow.
    • Peiece
    • Echinoderm
  9. A Echinoderm uses some of the bumps or spines on its surface to take in _______. It has a gill structure to take in the oxygen. It has a _______ developed respiratory system.
    • Oxygen
    • Poorly
  10. A Echinoderm has water pumped through its body as part of its very ______ circulation
    system.
    simple
  11. A Echinoderm has ________ which can detect light. Their eyespots are not as sharp as human eyes. It generally has a _______developed nervous system.
    • eyespots
    • poorly
  12. A Mollusk has an _____ shell. It has a _____ body. It has a muscular foot that it uses for movement.
    • outer
    • soft
  13. A Mollusk has food brought in through a siphon system and then to its mouth. It then goes to a digestive gland and to its intestine. Wastes leave via the _____.
    Anus
  14. A Mollusk has no formal nervous system, but has a series of ______ that conduct impulses.
    ganglia
  15. A Mollusk has a ______, _______ and _________.
    • heart
    • blood
    • blood vessels
  16. A Mollusk has tubes called siphons that bring water in and out of their bodies so that they can get _________ and give off __________. They have gills that help with this.
    • oxygen
    • carbon dioxide
  17. A Mollusk is either male or female and reproduces _______ with a large organ called a _______.
    • gonad
    • sexually
  18. A Mollusk has _______ symmetry.
    bilateral
  19. A Mollusk has a ______, _______, _______ body. It can be very small or as big as six feet across.
    • soft
    • thick
    • fleshy
  20. A Mollusk has an excretory system with an _____. It has an organ called the _________ that gets rid of wastes.
    • anus
    • nephridium
  21. An invertabrate wiht a soft unsegmeted body, most are protected by a hard outer shell
    Mollusk
  22. A consumer that eats only animals.
    Carnivore
  23. An ocean dwealing mollusk whose foot is adapted as tentacles that surround its mouth.
    Cephalopod
  24. An organ that removes oxygen fromthe water.\
    Gill
  25. A consumer that eats only plants.
    Herbivore
  26. A circulatory system in which the heart pumps blood into open spaces in the body, and blood is not confined to blood vessels.
    Open circulatory System
  27. A mollusk with a single shell or no shell.
    Gastropod
  28. A mollusk that has two shells held together by hinges and strong muscles.
    Bivalve
  29. A consumer that eats both plants and animals(us).
    Omnivore
  30. A flexible ribbon of tiny teeth in mollusks.
    Radula

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