What do protochordates breathe through?

The pharynx in protochordata is perforated by gill slits to facilitate water circulation for respiration. The heart of these organisms is ventral with a closed circulatory system.

1. How do Chordata breath?
2. How do Protochordates respire?
3. Do hagfish have lungs?
4. What do mammals use for breathing?
5. What is chordate circulation?
6. What type of skeleton does Chordata have?
7. What are Protochordates?
8. What are Protochordates and how are they classified?
9. What are Protochordates give example?

How do Chordata breath?

All aquatic chordates use gill slits to exchange oxygen and carbon dioxide. ... They use gills, positive pressure breathing and gas exchange through their skin to get oxygen. Mammals, birds, and reptiles use negative pressure breathing.

How do Protochordates respire?

Respiration occurs through gills. They have an open circulatory system. The excretory organs are absent. They reproduce asexually by budding.

Do hagfish have lungs?

BREATHING WITH LUNGS

Anyway, most of them have both gills and lungs. These species with the two mechanisms usually use the air in certain occasions: When the oxygen level in the water goes down.

What do mammals use for breathing?

Most mammals breathe through their mouths and noses and send oxygen to their body via the lungs. A few aquatic animals, including sea cucumbers and catfish, breathe through their intestines, and the intestinal tissues of humans can readily absorb pharmaceuticals.

What is chordate circulation?

Chordate animals have a closed circulatory system, in which blood is transported around the body inside veins and arteries of various sizes. The blood is circulated by the pumping action of the heart; the respiratory gases in the blood diffuse across the thin walls of the smallest vessels (capillaries) in the tissues.

What type of skeleton does Chordata have?

A true endoskeleton is derived from mesodermal tissue. Such a skeleton is present in echinoderms and chordates. The poriferan "skeleton" consists of microscopic calcareous or siliceous spicules or a spongin network.

What are Protochordates?

protochordate, any member of either of two invertebrate subphyla of the phylum Chordata: the Tunicata (sea squirts, salps, etc.) and the Cephalochordata (amphioxus).

What are Protochordates and how are they classified?

Protochordates are an informal category of animals (i.e.: not a proper taxonomic group), named mainly for convenience to describe invertebrate animals that are closely related to vertebrates. This group is composed of the Phylum Hemichordata and the Subphyla Urochordata and Cephalochordata.

What are Protochordates give example?

Examples of protochordata include Amphioxus, Salpa, Doliolum, and Saccoglossus.