Controlled movement must be connected to the recognition of various event: followed by only the correct movement in response In other words, living organisms must use systems providing control and coordination, In keeping with the general principles of body organisation in Multicelluiar organisms, specialised tissues are used to provide these control and coordination activities
(i) Coordination is needed for all human activities like, thinking and behaviour process, hearts beats. we dance, read. write by the action of our nervous system. Our nervous system gets information from surroundings and processes it and then respond according to it The endocrine system (hormonal system) helps in integrating various metabolic activities like reproduction, development, all reflex actions (cope up with various give up situations) Our breathing
(ii)The hormonal system in plants helps in process of photosynthesis they need carbon dioxide roots bend towards water and the stem grows towards suniight, the tendrils supported by the hormonal system of the plant body climbing pants are an organisms. Thus. we have need of control and coordination system in an organism
