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Dyr (animalia)

Tilbage til: organisme.

Dyr er en gruppe af flercellede organismer, som kan bev�ge sig rundt. Dyr udg�r en af de biologiske riger.

I f�lge Tree of Live web project: Bilateria (Triploblasts) er der f�lgende gruppering:

dyr Metazoa
- Bilateria (Triploblasts)
  - Deuterostomia
    - Pighuder Echinodermata
      - S�stjerner Asteroidea (S�stjerne...)
      - Slangestjerner Ophiuroidea (Slangestjerne...)
      - S�pindsvin Echinoidea
      - S�p�lser Holothuroidea (S�p�lse...)
      - S�liljer Crinoidea (S�lilje...)
    - Hermichordata
    - Rygstrengsdyr Chordata Chordonia (hvirveldyr, pattedyr og mennesker...)
  - Ecdysozoa
    - Leddyr Arthropoda (insekter, krebsdyr, tusindben, skolopender, spindler...)
    - Onychophora\
    - Bj�rnedyr Tardigradia
    - Rundorme Nematoda (trikin...)
    - Nematomorpha
    - Kinothyncha
    - Korsetdyr Loricifera
    - Priapulida
  - ?-Fladorme Platyhelminthes
  - ?-Chaetognatha
  - ?-Gastrotricha
  - ?-Hjuldyr Rotifera
  - ?-Gnathostomulida
  - ?-Micrognathozoa
  - ?-Ringb�rere Cycliophora
  - ?-Mesozoa
  - Lophotrochozoa
    - Ledorme Annelida (B�rsteorme, regnorm, sadelb�rsteorme, Igler, Posthornsormen...)
    - Stjerneorme Sipuncula
    - Bl�ddyr Mollusca (muslinger, snegle, nautilus, bl�ksprutter....)
    - Nemertiner Nemertea
    - Mosdyr Bryozoa Ectoprocta
    - Entoprocta
    - Phoronida
    - Armf�dder Brachiopoda
- Myxozoa
- R�kke N�ldecelledyr polypdyr Cnidaria (koraldyr, Hydra, havhveps, brandmand, vandmand, stor s�anemone...)
- Ribbegopler Ctenophora
- Placozoa
- Svampedyr Porifera

Table of contents

1 Dyr eller planter
2 Se ogs�
3 Eksterne henvisninger

Dyr eller planter

Forskellen p� dyr og planter er at dyr har sanserer, et redskab der bruges til at f� input fra omgivelserne og derved reagere udfra det. Dog vil dyr der har et defekt sanseapparat ikke blive betegnet som planter.

Se ogs�

Natdyr

Eksterne henvisninger

Google: Mest for b�rn: Animals
Discovery: Animal planet
Tree of Live web project: Discussion of Phylogenetic Relationships Citat: "...Due to new evidence from developmental biology and molecular phylogenetics, ideas about bilaterian relationships have undergone a major paradigm shift within the last decade. The new hypotheses shown in the tree above are now widely accepted, but there are also many sceptics who emphasize the pitfalls and inconsistencies associated with the new data. One of the most prominent alternative views based on morphological evidence is championed by Nielsen (2001)..."
Google: Animal
eksotiske-dyrs-venner.dk: fotoalbum
Markku Savela: Life (Omfattende).
Marin Biologi: Pigghuder: Sj�p�lser
Protozoer hydra (pdf)