Movement across socioeconomic levels is termed as -

social mobility is movement in socio-economic stratus indian society based on caste system, so there is little mobility there are societies known as &;open class societies&; where movement of the social ladder is unrestricted , it is on the basis of achievement or gaining wealth so here social mobility occur ref ;(page no;688) 23rd edition of PARK&;s textbook of Preventive and Social medicine