Describe the phylum chordata in animal kingdom, Biology

Assignment Help:

Describe the Phylum Chordata in animal kingdom?

This is the other group of animals along with the Echinodermata whose anus develops prior to the mouth's development in the embryological process. Sharing this similar embryology is thought to reflect the fact that Echinoderms and the chordates had a common ancestry. Consider how different the sea stars and sea cucumbers are from snakes, frogs, birds, fishes, and mammals!

There are three major features that distinguish the chordates from all other animals.

1. A hollow nerve cord running along the length of the back, or dorsal, side.

2. A flexible notochord that provides support and protection along the length of the nerve cord. In some cases it remains a notochord in the adult, and in other cases, it is replaced by a vertebral column in adult stages.

3. Pharyngeal gill slits that open to the outside in the throat area behind the mouth. In some species, pharyngeal slits function in filter feeding, and in other species the slits become modified into gas exchange organs, or gills.

One additional characteristic feature that most chordates have is a tail that extends beyond the anus. One system of classification separates the Phylum Chordata into three subphyla:

 


Related Discussions:- Describe the phylum chordata in animal kingdom

Create a standard curve, Explain how you would create a standard curve to d...

Explain how you would create a standard curve to determine the amount of orange dye that had been added to a can of orange soda

Median sternotomy approach-types of surgery, Median Sternotomy Approach :  ...

Median Sternotomy Approach :  The preferred approach these days is through a median sternotomy. Pericardiectoiny proceeds in the same way as done through left thoracotomy, by

Cell biology, what is morphological diversity of prokaryotes ans eukaryotes...

what is morphological diversity of prokaryotes ans eukaryotes

Reducing cost of accident, Reducing Cost of Accident One clear way to ...

Reducing Cost of Accident One clear way to control the cost of accident would be to follow all the rules of book for safety. All the methods of safety which were described ear

Microbiology and parasitology, Describe the methods that are used for the i...

Describe the methods that are used for the isolation and identification of bacteria.(20 marks)

Zoonoses disease-campylobacteriosis, Campylobacteriosis The genus Camp...

Campylobacteriosis The genus Campylobacter has been long associated with the cause of veterinary diseases under different names. It is only in the last 30 years that these org

Philum colenterata, What are the economic importance of colenterata

What are the economic importance of colenterata

Chlamydiosis-clinical manifestations, Clinical manifestations Since the...

Clinical manifestations Since the disease due to Chlamydia involves many organs/systems, system-wise descriptions of clinical signs is described as under: Genital infectio

Explain the methods of entrainment to food and survival, Methods of entrain...

Methods of entrainment to food and survival advantages Because of weak zeitgeber of light (during winter and summer months where there is very little change in photoperio

What is xaxim, What is xaxim? Most pteridophytes have subterraneous ste...

What is xaxim? Most pteridophytes have subterraneous stems parallel to the substrate known as rhizomes. Xaxim is a type of pteridophyte with an aerial stem generally perpendicu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd