In higher chordates, notochord is transformed into

Notochord is a

In which chordate the notochord is absent in adult?

In some chordates, the notochord is modified as the vertebral column. Such animals are called vertebrates. Which one of the following statements makes sense?

In some chordates, the notochord is modified as the vertebral column. Such animals are called vertebrates. Which one of the following statements makes sense?

In some chordates, the notochord is modified as the vertebral column. Such animals are called vertebrates. Which one of the following statements makes sense?

$ Notochord is present in vertebrates. ! Notochord is always formed of bones.

$ Notochord is present in vertebrates. ! Notochord is always formed of bones.

In higher chordates, pharyngeal gill slits are

In higher chordates, pharyngeal gill slits are