Question

The flexible rod-like structure present in organisms under phylum ‘Chordata’ is ________.

Answer 1

Phylum

1. In animals, closely related classes are classified into a phylum.
2. Chordata is a type of phylum belonging to Kingdom Animalia.
3. The presence of a notochord distinguishes organisms in this phylum.
4. The notochord is a flexible rod-like structure that appears in the embryonic stage and later develops into a vertebral column in adults.
5. Organisms like humans in Mammalia class, birds in Aves class, fishes in Pisces class, and crocodiles in Reptilia class are included in the phylum Chordata.

Final answer:

The flexible rod-like structure present in organisms under phylum ‘Chordata’ is notochord.