CBSE | NCERT CLASS

Biodiversity refers to all the diverse living organisms like plants, animals and micro-organisms present on earth. Kingdom Plantae: The organisms present in this kingdom are eukaryotic, green autotrophs and multicellular. First they are differentiated on the basis of the plant body they divided on the basis of vascular systems then again divided them on the basis of occurrence of seed and then furthered divided on the basis of seeds are covered or not. Kingdom Plantae divided into five divisions: (1) Thallophyta (2) Bryophyta (3) Pteridophyta (4) Gymnosperms (5) Angiosperms.

Biodiversity Kingdom Animalia : In this kingdom living organisms are divided into ten groups or phyla. They are porifera, cnidaria, platyhelminthes, nematoda, annelida, arthropoda, mullusca, echinodermata, protochordata, vertebrata.

C BSE Physics Class IX (9th) Motion Part 2 Uniform and Non-uniform Motion Uniform Motion : When a moving body always travels equal distance in equal interval of time, then its motion is called uniform motion. Example: If a car covered 5km distance in every hour, then its motion is called uniform motion. Non-uniform motion : When a body travels different distances in equal interval of time, then its motion is called non-uniform motion.

CBSE Physics Class IX (9th) Motion Motion : When an object change its position with respect to time and surrounding then the object is said to be in motion. Example: Moving car, bus etc since they change their position with respect to time. Rest : When an object does not change its position with respect to time and surrounding then the object is said to in rest.