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What classifications are tunicates and lanceletes?
Tunicates and lancelets represent the two groups of jawless fish. All other species of jawless fish have gone extinct.
Why are lancelets grouped in the same phylum as vertebrates?
Because they both belong to the Phylum Chordata in which they are both chordates (chordates are defined as organisms that possess a structure called a notochord, at least during some part of their development). Phylum Chordata Class Cephalochordata (lancelets) Family Asymmetronidae Family Branchiostomidae Subphylum Vertebrata (vertebrates) Class Cepalaspidomorphi Superclass Gnathostomata (jawed vertebrates) Class Chondrichthyes (rays, sharks) Euteleostomi (bony vertebrates) Class Actinopterygii (ray-finned fishes) Class Sarcopterygii (lobe-finned fishes & terrestrial vertebrates)
What are the examples of protochordata?
Examples of protochordata are Balanoglossus,Herdmania and Amphioxus.
What three groups make up the phylum chordata?
1.Craniata2.Cephalochordata: lancelets3.Urochordata: tunicatesWikipedia is a good place to look for this stuff.... really, you should try it.
Is phylum Chordata represents vertebrate animals exclusively?
No, the phylum Chordata includes both vertebrate and invertebrate animals. Vertebrates are a subphylum within Chordata and have a backbone or spinal column, whereas invertebrate chordates, like tunicates and lancelets, lack a backbone.
Are lancelets ectotherms?
Yes. Lancelets are fish and all fish are ectothermic.
What Tunicates and lancelets are two subphyla of animals classified as what?
chordates
What some chordates such as sea squirts and lancelets do not have?
Chordates such as the sea squirts and lancelets do not have a backbone that is why they are called vertebrate chordates.
Are lancelets filter feeders?
yes
What type of body cavity do lancelets have?
Acoelomate
How do lancelets move?
By contracting muscles in their body.
Do lancelets have a backbone?
No, lancelets do not have a backbone. They are small, fish-like marine invertebrates that belong to the subphylum Cephalochordata and possess a notochord instead of a true backbone.
How do tunicates and lancelets get their food?
They're filter feeders
What is the difference between hagfish and lancelets?
bony jaws
Tunocates and lancelets are two subphyla of animals classified as what?
Tunicates and lancelets are two subphyla of animals that are classified as Chordata. This means that they have dorsal nerve cords as well as notochords.
Which derived character is shared by fish and frogs but not lancelets?
a vertibrate
Do lancelets have pharyngeal pouches?
Yes, lancelets do have pharyngeal pouches. These pouches are openings in the pharynx that are important for filter feeding and gas exchange in these small marine animals.
