Question

is copy of DNA form identical to original cell? if yes/no how it is benificialto the species?

Answer 1

No, the copy of DNA in the daughter cell is not identical to the DNA of the mother cell in meiotic reproduction, there are slight variations in the DNA structure which leads to variations in the phenotypic  properties.
This is beneficial to the species because the variation in the offsprings allows the species to evolve and adapt to changes.