cephalochordata lancelets (habitat/ adaptation)
DESCRIPTION
Cephalochordata lancelets (habitat/ Adaptation). Lancelets live in sandy bottoms They live in shallow seawater. They live in protected coastal beaches. Urochordata tunicates (habitat). You can find them deep in the water. Facts !. - PowerPoint PPT PresentationTRANSCRIPT
Cephalochordata lancelets (habitat/ Adaptation)
Lancelets live in sandy bottoms
They live in shallow seawater.
They live in protected coastal beaches.
Urochordata tunicates (habitat) You can find them
deep in the water.
Facts ! Lancelets use cilia to draw water into their
pharynx through there mouth. Lancelets swim weakly. Food particles in the water are trapped as
the water passes through the numerous slits in the pharynx.
Facts (tunicates)
There bodies are covered by a tough covering or tunic.
Tunicates squirt out a stream of water when touched.
Tunicates are adapted for filter feeding. Food is filtered by the pharynx moves into
the stomach.
Chordata Characteristics They have bilateral symmetry Chordate have segmented bodies which included
segmented muscles Chordata have a well-developed coelem They have a hollow never cord that usually ends
with a brain Chordata have a post anal tail at some point in
there life They have an endoskeleton made out of either
bone or cartilage
Vocabulary Atriopore- when the food enters the intestine to
be digested while the water leaves the body Cephalochordata- a chordate subphylum defined
by the presence of a notochord that persists throughout life. It is represented in the modern oceans by the lancelets. Fossil species are also known from the Chengjiang biota.
Urochordata- are members of the subphylum Tunicata or Urochordata, a group of underwater saclike filter feeders with incurrent and excurrent siphons that is classified within the phylum Chordata.
Branchiostoma Belcheri Lancelets
Kingdom: Animalia
Phylum Chordata
Class : Cephalochordata
Family : Branchiostoma
Species: Branchiostoma belcheri
Botrylloides Tunicate
Kingdom:anamalia
Phylum:chordata
Class:ascidiacea
Order:stolidobranchia
Family:styelidae
Genus:botrylloides
Epigonichthys Cultellus
kingdom:anamalia
phylum:chordata
class:cephalochordat a
family:asymmetronidae
species:epigonichthys cultellus.
Resources
• Websites
•www.tolweb.org/Chordata/2499
•www.encyclopedia.com/topic/Chordata.aspx
•biology.clc.uc.edu/courses/bio106/chordate.htm
•animals.about.com/od/identifyinganimals/p/chordates.htm
•www.fossilmuseum.net/Tree_of_Life/PhylumChordata.htm
book
Biology book
videos
http://www.scivee.tv/node/2752
http://www.techvideobytes.com/video/1128075501