What Phylums have gills?
Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats and require gills as their respiratory system.
What type of animals have gills?
Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians.
Is there a mammal with gills?
Mammals have lungs as their breathing organs and not gills. Though animals like lungfish and salamanders have both lungs and gills, they aren’t mammals but fish.
What animal group uses gills breathing?
Gills greatly increase the surface area for gas exchange. They occur in a variety of animal groups including arthropods (including some terrestrial crustaceans), annelids, fish, and amphibians. Gills typically are convoluted outgrowths containing blood vessels covered by a thin epithelial layer.
How do lungs and gills differ?
Gills are evaginations of the body surface. Some open directly to the environment; others, as in fishes, are enclosed in a cavity. In contrast, lungs represent invaginations of the body surface. Many invertebrates use gills as a major means of gas exchange; a few, such as the pulmonate land snail, use lungs.
Are there any animals that have external gills?
Among vertebrates, gills are present in the larvae of frogs (tadpoles) or as a neotenic feature of some adult salamanders (axolotl, Necturus). Some fish also have external gills during the larval stage (elasmobranchs, lung fish).
What kind of animals are in the marine phyla?
Phyla that include marine animals include: Phylum Chordata. Chordates include fish, mammals, birds, reptiles and amphibians. Phylum Acanthocephala. These are spiny-headed worms. They are all parasitic worms characterised by a spine-covered proboscis that can extend outwards. The larvae is consumed by insects which are then eaten by fish.
Where are the gills located in an aquatic vertebrate?
Aquatic vertebrates have developed very efficient gill respiration. The gills are located in a chamber known as the opercular chamber. The oral cavity sucks water which is forced to go back through the gills to exit through the opercular cavity.
What kind of phylum do all animals belong to?
All animals belong to the taxonomic kingdom called Metazoa. We all immediately think of animals as organisms like fish birds, reptiles and mammals; all of which are chordates (eg: they have a spinal chord). These are more complex (higher) animals. They belong to a group or phylum called “chordata”
What kind of animal has gills on its body?
In some polychaeans there are highly vascular gills attached to the notopodium. In the areniculture, an excavating polychaete, and the ozobranchus, a leech, gills or gills are branching tufts arranged in a segmental fashion and in pairs along the body.
Where did the gills of a fish come from?
The respiratory gills of fishes are most likely to have evolved from the food collecting contraptions of more primitive animals. Fish belong to the phylum Chordata, as do mammals and all other vertebrate animals.
What was the first vertebrate to have gills?
Fish were the first vertebrates to evolve and did so way back in during the Early Cambrian around 530 million years ago. One of the earliest known fishes to possess gills is an extremely primitive fish called Myllokunmingia and was found in shallows water in Asia.
Where are the gills located in a crustacean?
In crustaceans, several types of well-developed internal gill structures are observed. In these animals, the gills are made of vascularized lamellar structures. In the case of gastropod molluscs, the gills are located within the cavity of the mantle which receives continuous streams of water.
