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Porifera | Hindi | Diversity In Living Organisms | Biology| Class 9

This group of animals is probably considered as the oldest animal group. They are also called as Sponges. These are by far the simplest multicellular animals. Even though they are multicellular, they do not have any tissues or organs. Sponges live in an aquatic habitat as they have to have intimate contact with water. Water plays a major role in the feeding, exchange of gases, and as well as excretion. The body of the sponges has many holes or pores called Ostia. The body structure of sponges is designed in such a way that water moves through the body, where it can filter out food and also absorb the dissolved oxygen, along with eliminating waste material. #porifera #livingorganism #organismclassification Subscribe to our channel to watch free online lectures For more videos, online classes, 24X7 Doubts solving and Mock tests, Visit Toppr - The better learning app. #BetterLearning on the Toppr app, download now Google Play: http://bit.ly/2vRBqcb App Store: http://apple.co/2vpRAr9 Website: https://www.toppr.com/ Download Doubts on Chat App: Android Play Store: http://bit.ly/2B6w7oy iOS App Store: http://apple.co/2ziAA75 Facebook:   / beingtoppr   Twitter:   / mytoppr   Instagram:   / mytoppr   LinkedIn:   / toppr-com   ****** Related Video ****** Trends In The Modern Periodic Table | Periodic Classification Of Elements | Class 10    • Trends In The Modern Periodic Table |...   Diffusion And Osmosis | Cell-Structure & Function | Biology | Class 9    • Diffusion And Osmosis | Cell-Structur...   Precious Water | Hindi    • Precious Water | Hindi   Transportation in Plants | Biology    • Transportation in Plants | Biology   Cell Membrane/Plasma Membrane | Cell-Structure & Function | Biology | Class 9    • Cell Membrane/Plasma Membrane | Cell-...   Ogives | Maths    • Ogives | Maths   Porifera | Hindi | Diversity In Living Organisms | Biology| Class 9    • Porifera | Hindi | Diversity In Livin...   Homogenous and Heterogeneous Mixture | Is matter around us pure? | Chemistry | Class 9    • Homogenous and Heterogeneous Mixture ...   Cell Division | Hindi | Biology    • Cell Division | Hindi | Biology   Mendeleev's Periodic Table | Periodic Classification Of Elements | Class 10    • Mendeleev's Periodic Table | Periodic...   Structure of Nephron | Hindi | Excretory System | Biology | Class 10    • Structure of Nephron | Hindi |  Excre...   Cell Wall | Cell-Structure & Function | Biology | Class 9    • Cell Wall | Cell-Structure & Function...   Monera | Hindi | Diversity In Living Organisms | Biology | Class 9    • Monera | Hindi | Diversity In Living ...   Lymphatic Circulatory System | Hindi | Biology    • Lymphatic Circulatory System | Hindi ...   Displacement Reactions | Chemistry    • Displacement Reactions | Chemistry   Simple Permanent Tissues | Structural Organisation In Plants | Biology | Class 9    • Simple Permanent Tissues | Structural...   How Lightning Occurs | CBSE 8 | Natural Phenomenon | English    • How Lightning Occurs  | CBSE 8 | Natu...   Electrostatic Force | Physics    • Electrostatic Force | Physics   Pure Substances and Mixtures | Is matter around us pure? | Chemistry | Class 9    • Pure Substances and Mixtures | Is mat...