Assertion: There are some plants which have in their life-cycles neither the process of fertilization nor they have meiosis.
Reason: In these plants, the vegetative or somatic plant body helps in the propagation of the plant.

Both Assertion (A) and reason(R) are correct and R is the correct explanation of A.

Organisms reproduce for perpetuation of species because individuals have a limited life span. Organisms may reproduce sexually as well as asexually. The sexual reproduction involves formation of haploid gametes through the process of reduction division or meiosis. The haploid gametes fuse during fertilization to form diploid zygote. Thus, restoring the normal ploidy. The asexual reproduction does not involves gamete formation through meiosis or their fertilization. The vegetative propagation in plants is a type of asexual reproduction in which plant body is propagated directly from some vegetative part of adult plant.