Question and answer
Do all adult chordates display the chordate features? Explain
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
Lateral area of the Great Pyramid and the two smaller pyramids.
Weegy: First, you need some measurements. [ The dimensions, to the nearest tenth of a meter of the Great Pyramid of Giza, determined by various expeditions are: height = 146.515 m base = 230.363 m Half the base is: 230.363 / 2 = 115.182 m Using the Pythagorean Theorem we get the slant height: s² = 146.515² + 115.182² s² = 34,734 m² s = v34,734 s = 186.369 m Now technically the Great Pyramid actually has concave sides and because of erosion, the limestone facing that made it a smooth pyramid is gone. However, let's ignore that and just assume it was a mathematically perfect square pyramid. base = 230.363 m slant height = 186.369 m Each face is a triangle with an area of ½ * base * slant height. And there are 4 of them. So the total lateral surface area would be given by: 2 * base * slant height = 2 * 230.363 * 186.369 = 85,865 m² That assumes you just want the exposed surface area, not the area of the base. If you want that as well, add the area of the square (230.363² = 53,067 m²) You can convert these to square feet if you like... Answer: Lateral surface area = 85,865 m² (or 924,243 sq. ft) Total surface area (including base) = 138,932 m² (or 1,495,451 sq. ft ] (More)
Question
Expert Answered
Asked 5/17/2010 8:07:49 AM
0 Answers/Comments
The two smaller pyramids' measurements:
Weegy: what are they? (More)
Question
Expert Answered
Asked 5/17/2010 8:46:37 AM
0 Answers/Comments
The two smaller pyramids' measurements:
Weegy: measurement: 1: the length, height etc of something Example:Take measurements of the room before you buy any new furniture. 2: the act of measuring something;measurement of Example:accurate measurement of body temperature [ ] User: The two smaller pyramids' (in Egypt) measurements (More)
Question
Expert Answered
Asked 5/17/2010 8:50:52 AM
0 Answers/Comments
Find the volume of the square pyramid. Bases-18. Height-19
Question
Not Answered
Updated 5/11/2010 9:23:31 AM
1 Answer/Comment
V=hB/3 (Where B is the Area of Base) V= 19*324/3; V=2052
Added 5/11/2010 9:23:31 AM
Find the volume of the square pyramid. Bases-18. Height-19
Weegy: 114 (More)
Question
Expert Answered
Asked 5/11/2010 9:06:43 AM
0 Answers/Comments
18,798,248 questions answered
Popular Conversations
What is the equation of the line that passes through (4, -1) and (-2, ...
Weegy: The equation of the line that passes through (4, -1) and (-2, 3) is: 2x + 3y - 5 = 0. User: If f(x) = 3x2 - ...
12/19/2014 9:38:50 AM| 4 Answers
Simplify 7(n - p) + 5p. User: Simplify 8 + 3{x - 2[x + 5(x + 3)]}. ...
Weegy: 3-3 = 0 User: Select the correct product. (y + z)3 Weegy: What do you want me to do about your equation? ...
12/19/2014 10:41:10 AM| 4 Answers
3 + 2y = -3, what is y?
12/19/2014 1:06:06 PM| 3 Answers
What is the solution of the equation? A. –4 B. 8 C. 44 ...
Weegy: (b + 6)/5 = 10 b + 6 = 50 b = 50 - 6 b = 44 User: What is the solution of the equation? 3 = b + 3 A. 9 ...
12/19/2014 4:08:47 PM| 3 Answers
The US is the world’s leading producer of ...
12/19/2014 6:33:14 AM| 2 Answers
Solve: 2x + 16 = 40
Weegy: 2x + 3 = 5; 2x = 5 - 3; 2x = 2; x = 2/2; x = 1 User: Factor: x2 - 12x + 27
12/19/2014 7:51:37 AM| 2 Answers
Find the product. -2x a(-4x b - 2x 3 + 5x)
Weegy: 2x a(-4x b - 2x 3 5x), The result is 2xa(-4bx-30x^2) User: Simplify 8 + 3{x - 2[x + 5(x + 3)]}. User: Find ...
12/19/2014 10:32:54 AM| 2 Answers
monologue User: Shepheardes Calender
12/19/2014 11:08:20 AM| 2 Answers
Find the product mentally. (2m - 9)2
Weegy: 3-3 = 0 User: Select the correct product. (a + 8)(b + 3)
12/19/2014 11:08:48 AM| 2 Answers
Find the product mentally. (ab + 3)(ab - 3)
Weegy: 3-3 = 0 User: Find the product. (r + s)2
12/19/2014 11:11:21 AM| 2 Answers
Weegy Stuff
S
L
P
Points 1116 [Total 4960]| Ratings 0| Comments 1116| Invitations 0|Offline
S
L
Points 712 [Total 1403]| Ratings 1| Comments 702| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
Points 685 [Total 14870]| Ratings 1| Comments 675| Invitations 0|Online
S
Points 681 [Total 681]| Ratings 1| Comments 671| Invitations 0|Offline
S
P
C
L
P
L
1
Points 117 [Total 6436]| Ratings 1| Comments 107| Invitations 0|Offline
S
L
Points 73 [Total 1533]| Ratings 1| Comments 63| Invitations 0|Offline
S
1
L
L
Points 33 [Total 6700]| Ratings 0| Comments 33| Invitations 0|Offline
S
Points 30 [Total 30]| Ratings 0| Comments 0| Invitations 3|Offline
S
Points 23 [Total 29]| Ratings 0| Comments 23| Invitations 0|Offline
S
Points 22 [Total 22]| Ratings 0| Comments 2| Invitations 2|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.