Characterstic Features of Subphylum Vertebrata MCQ - Practice Questions with Answers

Subphylum Vertebrata - Characteristics Features:

• They are also called higher chordates.
• The notochord is present only during the embryonic stage. It is replaced by the vertebral column or spine. 
• They possess a well developed central nervous system with a brain and spinal cord.
• They possess a well-differentiated head. The brain is surrounded by cranium or skull.
• They have a closed circulatory system with two, three, or four chambered heart.
• They have well developed respiratory, digestive, muscular and endocrine system.
• The phylum Vertebrata is divided into two divisions as follows:
• Agnatha : They lack true jaws and paired appendages. They have only one important class 一 Cyclostomata
• Gnathostomata : They possess true jaws and paired appendages. They have two important superclasses 一 Pisces and Tetrapoda