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Flashcards in Platyhelminthes Deck (5)
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1
Q

Members of the Phylum Platyhelminthes characteristics

A
  • all are multicellular
  • are triploblastic
  • are acoelomate because they do not have a coelom
  • ## body is flattened Dorsiventrally
2
Q

Structure of platyheminthes

A
  • adapt to an inactive lifestyle by having an alongated, flattened body with specialised, sensitive head at the front
  • the head has a concentration of nerve cells, which is known as cephalisation
  • the animals are bilaterally symmetrical which enables flat works to move
  • a flat worm has a top dorsal side and bottom ventral side
  • Some flatworms live entirely parasitically while others are free living in water, move fast and take in food via mouth
3
Q

What is a Acoelomate

A

Animal without a body cavity

4
Q

Doris- ventral

A

The animal has a top and a bottom surface

5
Q

What is a scolex

A

Small pear- shaped front end of a tapeworm with hooks and suckers for attachment to the host