Nematodes, Echinodermata

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Author:
Siobhan
ID:
120784
Filename:
Nematodes, Echinodermata
Updated:
2011-12-04 19:40:58
Tags:
Nematodes Echinodermata
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Nematodes, Echinodermata
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  1. Characteristics
    of Nematodes

    • Ubiquitous
    • Unsegmented
    • Hydrostatic skeleton
    • Cuticle which is molted
    • Specialized sensory organs
    • Primarily dioecious
    • Complete digestive tract
    • No respiratory/circulatory systems
    • Most parasitic
    • Sensory organs, including a simple
    • brain

  2. Human
    Roundworm Parasites

    • Hookworm
    • Pinworm
    • *Intestinal Roundworm (Ascaris sp.)
    • Trichinella (causes trichinosis)
    • Whipworm

  3. Phylum
    Echinodermata

    • “spiny-skinned”

  4. Characteristics
    of Echinoderms

    • All marine
    • Sea stars, sea urchins, sea
    • cucumbers
    • Calcareous skeleton
    • Spines
    • Water-vascular system
    • Appear radially symmetrical,
    • however are descended from
    • bilateral ancestors, have bilateral
    • larvae
    • Most dioecious

  5. The
    Water-Vascular System
    • •echinodermata
    • Specialized, unique coelomic cavity
    • Fluid-filled, hydraulic canals
    • Locomotion
    • Respiration/excretion
    • Sieve plate – opening for water balance
    • Tube feet (podia) usually with
    • suckers

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