Question

What are the Sub division of chordata-phylum?? 1st to answer will be Given as the brainliest

Answer 1

Urochordata

Cephalochordata

Vertebrata:

Cyclostomata

Pisces

Amphibia

Reptilia

Aves

Mammalia

Answer 2

★ SUB-PHYLUM OF CHORDATA:-

• Urochordata:-

• It is exclusively marine.
• The notochords are present only in the larval tail.
• Examples: Ascidia, Salpa ,Doliolum.

• Cephalochordata:-

• Here, the notochord extends from head to tail region.
• Example: Branchiostoma

• Vertebrata:-

• It also possess he notochord during the embryonic period.
• Basically, the notochord is replaced by a cartilaginous vertebral column in the adult.
• Hence we know that all vertebrates are chordates but all chordates are not vertebrates.

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