Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: Do all adult chordates display the chordate features? Explain
A: The notochord is an elongate, rod-like, skeletal structure dorsal to the gut tube and ventral to the nerve cord. The notochord should not be confused with the backbone or vertebral column of most adult vertebrates. [ The notochord appears early in embryogeny and plays an important role in promoting or organizing the embryonic development of nearby structures. In most adult chordates the
notochord disappears or becomes highly modified. In some non-vertebrate chordates and fishes the notochord persists as a laterally flexible but incompressible skeletal rod that prevents telescopic collapse of the body during swimming. The nerve cord of chordates develops dorsally in the body as a hollow tube above the notochord. In most species it differentiates in embryogeny into the brain anteriorly and spinal cord that runs through the trunk and tail. Together the brain and spinal cord are the central nervous system to which peripheral sensory and motor nerves connect. The visceral (also called pharyngeal or gill) clefts and arches are located in the pharyngeal part of the digestive tract behind the oral cavity and anterior to the esophagus. The visceral clefts appear as several pairs of pouches that push outward from the lateral walls of the pharynx eventually to reach the surface to form the clefts. Thus the clefts are continuous, slit-like passages connecting the pharynx to the exterior. The soft and skeletal tissues between adjacent clefts are the visceral arches. The embryonic fate of the clefts and slits varies greatly depending on the taxonomic subgroup. In many of the non-vertebrate chordates, such as tunicates and cephalochordates, the clefts and arches are elaborated as straining devices concerned with capture of small food particles from water. In typical fish-like vertebrates and juvenile amphibians the walls of the pharyngeal clefts develop into gills that are organs of gas exchange between the water and blood. ]
Get an answer
Original conversation
User: Vertebrates are chordates, but not all chordates are vertebrates. How can this be?

User: Do all adult chordates display the chordate features? Explain

Weegy: The notochord is an elongate, rod-like, skeletal structure dorsal to the gut tube and ventral to the nerve cord. The notochord should not be confused with the backbone or vertebral column of most adult vertebrates. [ The notochord appears early in embryogeny and plays an important role in promoting or organizing the embryonic development of nearby structures. In most adult chordates the notochord disappears or becomes highly modified. In some non-vertebrate chordates and fishes the notochord persists as a laterally flexible but incompressible skeletal rod that prevents telescopic collapse of the body during swimming. The nerve cord of chordates develops dorsally in the body as a hollow tube above the notochord. In most species it differentiates in embryogeny into the brain anteriorly and spinal cord that runs through the trunk and tail. Together the brain and spinal cord are the central nervous system to which peripheral sensory and motor nerves connect. The visceral (also called pharyngeal or gill) clefts and arches are located in the pharyngeal part of the digestive tract behind the oral cavity and anterior to the esophagus. The visceral clefts appear as several pairs of pouches that push outward from the lateral walls of the pharynx eventually to reach the surface to form the clefts. Thus the clefts are continuous, slit-like passages connecting the pharynx to the exterior. The soft and skeletal tissues between adjacent clefts are the visceral arches. The embryonic fate of the clefts and slits varies greatly depending on the taxonomic subgroup. In many of the non-vertebrate chordates, such as tunicates and cephalochordates, the clefts and arches are elaborated as straining devices concerned with capture of small food particles from water. In typical fish-like vertebrates and juvenile amphibians the walls of the pharyngeal clefts develop into gills that are organs of gas exchange between the water and blood. ]
Expert answered|cyssuss|Points 311|

Question|Rated bad
Asked 5/16/2010 2:50:25 PM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Animals that do not have backbones are called _____. User: Which modern-day arthropods are most similar to fossil trilobites? _____ points:1 Choose one answer. a. dragonflies b. horseshoe crabs c. fiddler crabs d. praying mantises
Weegy: invertabrates (More)
Question
Expert Answered
Updated 2/2/2014 11:51:55 AM
1 Answer/Comment
Animals without backbones are called invertebrates.

Added 2/2/2014 11:51:55 AM
This answer has been confirmed as correct and helpful.
In some chordates, pharyngeal slits develop into _____. Choose one answer. a. gills. b. vertebrae. c. blood vessels. d. fins.
Weegy: In some chordates, pharyngeal slits develop into vertebrae. (More)
Question
Expert Answered
Updated 313 days ago|1/10/2017 1:46:28 PM
0 Answers/Comments
All of the following are functions of fungi EXCEPT... Choose one answer. a. Disease Causing b. Chemical Cycling c. Seed dispersal d. Increase nutritional absorption of plants e. Commercial Uses
Weegy: All of the following are functions of fungi EXCEPT...seed dispersal. (More)
Question
Expert Answered
Updated 9/5/2016 4:57:46 PM
0 Answers/Comments
A crab is a_____ a. Gastropoda b. Cephalopoda c. Bivalvia d. Crustacean e. Mollusca
Weegy: A crab is a Crustacean. (More)
Question
Expert Answered
Updated 3/8/2014 2:17:03 PM
0 Answers/Comments
A shark is a _______ a. Caecilian b. Actinistia c. Actinopterygii d. Cephalaspidomorphii e. Chondrichthyes
Weegy: A shark is a E. Chondrichthyes. (More)
Question
Expert Answered
Updated 3/8/2014 2:26:32 PM
0 Answers/Comments
26,489,781 questions answered
Popular Conversations
The following two sentences are saying the same thing. Emily, my ...
Weegy: The following two sentences are saying the same thing. Emily, my daughter, is in sixth grade. Emily, my daughter ...
11/13/2017 12:26:02 PM| 3 Answers
Cardiorespiratory endurance
Weegy: Experts agree that the minimum time period for cardiorespiratory benefit from exercise is 20 minutes. User: ...
11/9/2017 5:27:59 PM| 2 Answers
Which of the following statements about irregular verbs is correct? ...
Weegy: Jackson has thrown the ball to first base. User: What should be added when an adverb begins a sentence? ...
11/10/2017 7:40:31 AM| 2 Answers
The type of soil called loam is made up of _____. A. pure humus. B. ...
Weegy: The type of soil called loam is made up of nearly equal amounts of silt, sand, and clay. User: The practice ...
11/10/2017 8:24:45 AM| 2 Answers
Weegy Stuff
S
L
P
Points 166 [Total 291] Ratings 9 Comments 76 Invitations 0 Offline
S
P
L
P
Points 21 [Total 151] Ratings 0 Comments 21 Invitations 0 Offline
S
P
P
L
P
P
Points 20 [Total 1658] Ratings 0 Comments 20 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.