Science Pedia

      🌳    Co-ordination in Plants   🌳 Plants do not have systems like the nervous system or muscular system of animals .  Then , how do plants bring about movements ?  In plants , movements are mainly in the form of responses given to the stimuli . Movement or growth of any part of the plant in response to an external stimulus is called 'tropism' or 'tropic movements' . The shoot system of any plant responds to the light stimulus that is it grows towards the source of the light . The movements shown by plants towards the source of the light is called 'Phototropic Movement' . The root system of plants responds to stimuli like gravitation and water .  These responses are called 'gravitropic movements' and 'hydrotropic movement' resectively . Movement shown by plants in response to specific chemicals is called 'chemotropic movements' .  For example , the growth of the pollen tube towards the ovule . All the above - menti...

Co-ordination   What is Co-ordination ? Several different organ systems function in multicellular organisms . Their life goes on smoothly if there is co-ordination between this different organ systems or organs and the stimuli in the surrounding . Depending upon this , we can say that systematic regulation of different processes can be called control and bringing about the different processes in the proper sequence can be called co-ordiantion . If any activity in the body is to be completed succesfully , proper co-ordiantion between different systems and organs participating at different steps of that activity is necessary . If due to lack of co-ordination or some other factor , there is confusion at any step the activity may not get completed . There should not be any randomness at any step . There needs to be proper co-ordination between internal activities of the body resulting from various factors like body temperature , water level , enzyme-level , etc .  ...