Question

Explain vertebrata in detail

Answer 1

Answer:

Anatomical terms of bone. In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions of which vary according to the segment of the backbone and the species of vertebrate.

Explanation:

Answer 2

Answer:

Vertebrata -

• Notochord gets replaced by vertebral column.
• They have a definite head or skull enclosed the brain.
• Notochord present during the embryonic period.
• Notochord gets replaced by a cartilaginous and bony vertebral column in adult.
• They have a ventral muscular heart.
• They have kidneys for excretion and osmoregulation.
• They have paired appendages as limbs or fins.
• They are classified as : Agnatha and Gnathostomata on the basis of presence of jaws.
• The Gnathostomata's are classified into Pisces and Tetrapoda.
• Pisces includes Chondrichthyes and Osteichthyes.
• Tetrapoda includes Amphibia, Reptilia, Aves and Mammalia.