Perisperm differs from endosperm in: Being a haploid tissue. Having no reserve food. Being a diploid tissue. Its formation by fusion of secondary nucleus with several sperms.

Perisperm is nutritive tissue in the seed, so functionally similar to the endosperm. But perisperm is diploid as it is developed from nucellus by mitosis, while endosperm is triploid. Hence option C is the correct answer.