Form and movement in animals Notes

INTRODUCTION

•    The body of a living organism is made of cells.

•    A cell is considered as the basic unit of all organisms.

•    Depending on the number of cells they consist, organisms can be unicellular or multicellular.

•    Living things show structural organization, that is, the bodies of multicellular organisms have the following organization.
 
•    There are different organ systems present in our body:

     1. Respiratory system 

     2. Circulatory system

MOVEMENT IN ANIMALS

•    Without the ability to move, there would be no life on Earth.

•    For living, animals have occupied almost all the places that are suitable for life by moving around. Like;

     1. The underground soil

     2. The surface of the ground

MOVEMENT IN COCKROACH

•    The body of a cockroach is covered with a hard outer skeleton.

•    Cockroaches have a pair of antennae that help them to smell things.

•    They also have a pair of cerci that can detect the slightest of movements and warn them of any danger from behind.