The kingdom Protist and kingdom Fungi has some members that reproduce asexually. Asexual mode of reproduction can be defined as the process by which formation of zygote takes place without the involvement of male and female gametes.
The amoeba and paramecium divides by binary fission and the new individuals formed are identical to their parents.
Some species of fungi also reproduce asexually. Example: zoospores
Children younger than 5, but especially children younger than 2 years old. Adults 65 years of age and older. Pregnant women (and women up to two weeks postpartum)