Which of the following statements is correct with respect to chordates?

Notochord is present

The correct answer is Option (1)- Notochord is present

The correct statement with respect to chordates is:

Notochord is present.

Chordates are characterized by several features, including the presence of a notochord, which is a flexible rod-like structure that provides support. Additionally, chordates typically have a dorsal, hollow nerve cord (not solid) and a post-anal tail at some stage of their development. The heart may be ventrally placed in some chordates, but it is generally present. Therefore, the statement that the notochord is present accurately describes a key characteristic of chordates.