Invertebrates Overview
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Questions and Answers

What type of skeleton do invertebrates have?

  • Both A and B (correct)
  • Hydrostatic skeleton
  • Vertebral column
  • Hard exoskeleton
  • What do invertebrates consume for energy?

    Other organisms

    Invertebrates generally have differentiated tissues except for ______.

    Porifera

    Invertebrates possess a vertebral column.

    <p>False</p> Signup and view all the answers

    How many openings does an invertebrate's digestive chamber typically have?

    <p>One or two</p> Signup and view all the answers

    Where is the pneumostome located in gastropods?

    <p>On the right side</p> Signup and view all the answers

    What is the name of the breathing hole in gastropods?

    <p>Pneumostome</p> Signup and view all the answers

    All gastropods are symmetrical.

    <p>False</p> Signup and view all the answers

    Glaucus atlanticus exhibits internal symmetry.

    <p>False</p> Signup and view all the answers

    Study Notes

    Invertebrates Overview

    • Invertebrates possess either a hydrostatic skeleton (e.g., worms, jellyfish) or a hard exoskeleton (e.g., insects, crustaceans).

    Characteristic Features

    • Lack a vertebral column, distinguishing them from vertebrates.
    • Classified as heterotrophs, relying on the consumption of other organisms for nourishment.
    • Generally composed of specialized tissues, with the exception of Porifera (sponges) which lack tissue differentiation.
    • Have a digestive chamber that may have one or two openings to the exterior, facilitating digestion and waste expulsion.

    Morphological Features

    • Gastropods, a class of mollusks, exhibit asymmetry, particularly evident in those with a helical shell.
    • Although gastropods may initially appear externally symmetrical, they feature a pneumostome, a breathing hole located consistently on the right side.
    • Example organism: Glaucus atlanticus, which shows external symmetry but develops asymmetrical cerates during growth.

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    Description

    Explore the fascinating world of invertebrates, focusing on their structural and morphological features. This quiz covers characteristics such as the absence of a vertebral column and the various skeletal forms they possess, including hydrostatic and exoskeletons. Test your knowledge about these diverse organisms and their unique adaptations.

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