Cephalchordata

8
Sangita Kanumalla

Transcript of Cephalchordata

Page 1: Cephalchordata

Sangita Kanumalla

Page 2: Cephalchordata

About Me!

QuickTime™ and a decompressor

are needed to see this picture.

QuickTime™ and a decompressor

are needed to see this picture.

There is more to me than my simple, plain appearance and bilateral symmetry . I am someone who loves to relax. I come from a very small part of the animal kingdom

Humans, especially in Asia, think that I am absolutely delicious and I am also extremely important to the study of how vertebrates have evolved and adapted. I am their closest cousins

Lancelets

Page 3: Cephalchordata

Where to Find Me

Looking for me? You can find me buried in the sand in a warm, shallow, tropical or temperate oceans. I feed by filtering water.

QuickTime™ and a decompressor

are needed to see this picture.

QuickTime™ and a decompressor

are needed to see this picture.

Page 4: Cephalchordata

My Hobbies

I really enjoy laying in the water, particularly in the sand leaving my anterior end exposed

You can find a lot of us laying on a beach in Jamaica or Tampa Bay Florida There are over 5,000 of us per square meter

I really love relaxing all day and not having any worries (except getting eaten)

Page 5: Cephalchordata

Some Interesting Facts About Me

My ancestors devised an early form of swimming mechanism of fishes This allows me to swim to new locations when I

am bored We have segmented muscle bands along the

sides of our notochord We are suspension feeders

We are suspension feeders Pharynx and gill slits are feeding structures

Page 6: Cephalchordata

More Facts About Me!

Notochord, Nerve Chord, Pharyngeal Slits, Postanal Tail Later evolved into vertebrates Gas exchange takes place on the external part of my body I have a closed circulatory system and no central heart--

DOES NOT MEAN I CANNOT LOVE! Unfortunately, our brain and sense organs are poorly

developed but that doesn’t mean that I don’t have any feelings!

I trap food in my pharynx

I fertilize externally :)

Page 7: Cephalchordata

My Ideal MateMy Ideal Mate

» I need someone who is willing to look past my unattractive appearance and look into my inner beauty and my heart (even though I really don’t have one!)

» Someone who loves to lay in the sand and relax all day

» I need someone who is willing to look past my unattractive appearance and look into my inner beauty and my heart (even though I really don’t have one!)

» Someone who loves to lay in the sand and relax all day

Page 8: Cephalchordata

Works Cited

Campbell, Neil A., and Jane B. Reece. Biology, Sixth Edition. San Francisco: Benjamin Cummings, 2001.This biology textbook described many important features of the cephalochordata

"Cephalochordata, Laboratory Notes for BIO 1003." 18 Apr. 2009 <http://faculty.baruch.cuny.edu/jwahlert/bio1003/chordata.html>.This website gave information on the anatomy of the cephalochordata

"Evolution and Comparative Anatomy of Vertebrates." 18 Apr. 2009. This website gave a lot of information on the evolution of the cephalochordata

"Introduction to the Cephalochordata." UCMP - University of California Museum of Paleontology. 18 Apr. 2009 <http://www.ucmp.berkeley.edu/chordata/cephalo.html>. This website gave a lot of information on the different habits and features of the cephalochordata