Three subphyla of Phylum Chordata! #Class11 #NEETpreparation #NCERT #NEET2026 @crackNEETBiologyy
Three Subphyla of Phylum Chordata 1. Urochordata (also called Tunicata) Notochord present only in larval tail. Adults are sessile (attached), and lose notochord and tail. Marine animals with a sac-like body. Open circulatory system. Examples: Ascidia, Salpa, Herdmania 2. Cephalochordata Notochord extends from head to tail and is present throughout life. Segmented body with muscle blocks (myotomes). Marine, fish-like, burrowers. Closed circulatory system, but no heart. Example: Branchiostoma (also called Amphioxus or Lancelet) 3. Vertebrata Notochord is present in embryo but replaced by vertebral column (spine) in adults. Well-developed brain enclosed in a cranium (skull). Paired appendages, complex organ systems, and closed circulatory system with a ventral heart. Divided into: Agnatha (jawless vertebrates like lamprey) Gnathostomata (jawed vertebrates – fishes, amphibians, reptiles, birds, mammals) Subscribe 'Crack NEET Biology' to learn the Biology concepts easily with focus on NEET. Thanks for watching my lecture @crackNEETBiologyy #crackNEETBiology #cbse #Ncert #11th Biology #12th Biology #neetrepeaters #NEET2025 #neetpyqbiology #neetpyqseries #NEET2026 The video-lectures are delivered to help the 11th and 12th students understand the Biology concepts in simple and effective manner, also focused towards previous year NEET questions, enabling students to successfully attempt NEET Biology examination. The lectures are arranged chapter wise for 11th and 12th NCERT Biology in the playlist. You may kindly comment in the topics where you have doubts or need a detailed explanation. The lectures are delivered by S.Pratheeba, M.Tech in Biopharmaceutical Technology, excelled with distinction from AC Tech, Anna University, Chennai. #AnimalKingdom #neetbiologytamil #BasisofClassification #LevelsofOrganisation #Symmetry #Coelom #Triploblasticanimals #BodyCavity #Segmentation #Notochord #NEET2026 #NEETpyqseries #NEETpreparation #Chordata #NEET2026 #Vertebrata #protochordates #cyclostomes #agnatha #gnathostomata #Amphibia #Aves #Mammalia #Cephalochordata #Urochordata