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: https://www.facebook.com/beingToppr
Twitter: https://twitter.com/mytoppr
Instagram: https://instagram.com/mytoppr
LinkedIn: https://www.linkedin.com/company/toppr-com/

Видео Porifera | Hindi | Diversity In Living Organisms | Biology| Class 9 канала Toppr Class 8-10