Peripheral vision is reduced even progressing to tunnel vision and then to blindness in what eye disorder

Retinitis pigmentosa is a genetic disorder of the eyes that causes decreased peripheral vision, which could progress to tunnel vision and will make the rod photoreceptor and cone photoreceptor cells of the retina to deteriorate causing blindness. Furthermore, finding dark deposit pigments in the retina is a basis for its diagnosis and this eye disorder has no cure.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.