NEET Biology: Anatomy of Vertebrates questions with solutions

Q1. Vertebrae are absent is

1. Duck-billed platypus
2. Turtle
3. Amphioxus
4. Trout E . Rabbit

Answer: Amphioxus

Amphioxus (lancelet) is a primitive chordate that has a notochord and dorsal nerve cord but no vertebral column. The other options are vertebrates or have a backbone at some stage.