Anmol Sharma is teaching live on Unacademy Plus
Class 11th 04. ANIMAL KINGDOM NEET/AIIMS ANMOL SHARMA
WHAT TO STUDY? Basis of Classification Levels of Organisation . Symmetry .Diploblastic and Triploblastic Organisation (Germ Layer) . Coelom Segmentation Notochord . Classification of Animals . Phylum Porifera Phylum Colenterata Phylum Ctenophora . Phylum Platyhelminthes .Phylum Aschelminthes Phylum Annelida Phylum Arthropoda . Phylum Mollusca Phylum Echinodermata Phylum Hemichordata . Phylum Chordata
* Class Chonarichythyes * Class Amphibia . Class Aves Class Cyclostomata Class Osteichthyes Class Reptilia . Class Mammalia Key Point of Animal Kingdom
Phylum - Echinodermata Ihese animals have an endoskeleton of calcareous ossicles and, hence, the name Echinodermata (Spiny bodied) Habitat All are marine Symmetry - The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical * Digestive system - complete with mouth on the lower (ventral) side and anus on the upper (dorsal) side
Water vascular system - distinctive feature Helps in locomotion, capture and transport of food and respiration. Excretory system - absent. Reproduction - Dioecious animals . Reproduction is sexual. * Fertilisation - usually external. .Development - indirect with free-swimming larva. Examples: Asterias (Star fish), Echinus (Sea urchin), Antedon (Sea lily), Cucumaria (Sea cucumber) and Ophiura (Brittle star)
Phylum - Hemichordata Earlier considered as a sub-phylum under phylum Chordata, but now it is placed as a separate phylum under non-chordata Habitat - consists of a small group of worm-like marine animals. . Level of organization, symmetry, body cavity organ-system level of organization, bilaterally symmetrical, triploblastic and coelomate animals Body shape and division - The body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk. Body shiape and division The ooty .
Circulatory system - Open type Respiration - through gills . Excretory organ - proboscis gland . Reproduction, fertilisation, development- Diocious animals, external Fertilisation, indirect Development. Examples: Balanoglossus and Saccoglo SSUs.
Figure : Balanoglossus Source This image is from NCERT Textbook Page no. 54