What chordate structure becomes the spinal chord in vertebrates?

These include a stiffening rod, called a notochord that in many members (the vertebrates) is later replaced by a bony column of vertebrae. The discs between the vertebrae are the remains of the notochord. Another chordate feature is a hollow dorsal nerve cord that in most members becomes the spinal cord and brain.

1. What forms the spinal cord in chordates?
2. Is the notochord the spinal cord?
3. Which of the following structure present in all the chordate Which of the following structure present in all the chordate?
4. What is the fate of notochord in vertebrates?
5. Which type of symmetry is seen in Chordata?
6. What is Chordata and non Chordata?
7. What structure replaces the notochord in vertebrates?
8. How does the nerve cord of chordates differ from the nervous systems of other animals?
9. What happens to the notochord in vertebrates and Protochordates?
10. Which one of the following structure is present in all adult vertebrates?
11. Is characteristic of Chordata?
12. In which group the members of the phylum Chordata belongs?
13. Who created the phylum Chordata?
14. What is the difference between notochord and vertebral column?
15. What is the fate of notochord in higher Chordata?

What forms the spinal cord in chordates?

The notochord provides skeletal support, gives the phylum its name, and develops into the vertebral column in vertebrates. The dorsal hollow nerve cord develops into the central nervous system: the brain and spine.

Is the notochord the spinal cord?

The notochord is found under the spinal cord. Remember that unlike a spine, the notochord provides very little protection to the spinal cord. Also remember that animals with a spine no longer retain a notochord. It has been incorporated into the spine.

Which of the following structure present in all the chordate Which of the following structure present in all the chordate?

In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

What is the fate of notochord in vertebrates?

In all vertebrates other than hagfish, the notochord develops into the vertebral column, becoming vertebrae and the intervertebral discs the center of which retains a structure similar to the original notochord.

Which type of symmetry is seen in Chordata?

Chordates are bilaterally symmetrical, which means there is a line of symmetry that divides their body into halves that are roughly mirror images of each other. Bilateral symmetry is not unique to chordates.

What is Chordata and non Chordata?

The major point to differentiate between chordates and non-chordates is that chordates have a spinal cord or backbone in their body structure whereas non-chordates are without backbone or notochord in their body structure.

What structure replaces the notochord in vertebrates?

In most vertebrates, the notochord is eventually replaced by ossified vertebrae, but it persists throughout the life of invertebrate chordates (Stemple, 2005; Trapani, Bonaldo, & Corallo, 2017).

How does the nerve cord of chordates differ from the nervous systems of other animals?

A dorsal (top side), hollow nerve cord derived from ectodermal tissue is another characteristic that distinguishes chordates from other animals. Most other bilateral animal phyla with a nervous system have a solid, ventral (bottom side) nerve cord.

What happens to the notochord in vertebrates and Protochordates?

4. What happens to the notochord in vertebrates and protochordates? In vertebrates, the notochord disappears and to produce the spine (vertebral column). In protochordates, the notochord remains during their whole life.

Which one of the following structure is present in all adult vertebrates?

Dorsal tubular nerve cord is the characteristic feature of all adult vertebrate.

Is characteristic of Chordata?

Characteristics of Chordata. Animals in the phylum Chordata share five key chacteristics that appear at some stage during their development: a notochord, a dorsal hollow (tubular) nerve cord, pharyngeal gill arches or slits, a post-anal tail, and an endostyle/thyroid gland (Figure 2).

In which group the members of the phylum Chordata belongs?

Phylum Chordata belongs to the Kingdom Animalia and includes all the vertebrates, i.e., animals with a backbone, and several invertebrates, i.e., organisms without a backbone.

Who created the phylum Chordata?

Although the name Chordata is attributed to William Bateson (1885), it was already in prevalent use by 1880. Ernst Haeckel described a taxon comprising tunicates, cephalochordates, and vertebrates in 1866.

What is the difference between notochord and vertebral column?

The key difference between notochord and vertebral column is that notochord is a flexible rod-like structure that supports the nervous tissue in lower chordates, while the vertebral column is a structure containing 33 vertebrae, running from the skull up to the pelvis in vertebrate higher chordate animals.

What is the fate of notochord in higher Chordata?

Complete Answer:

It is ultimately fully consumed by the spine. In the spine, it shapes a prominent part of the intervertebral disc. In other words, the notochord is renovated by the vertebral column partially or completely. This is the correct answer.