Under the newer classification system based on nucleotide sequences and cellular structures visible with electron microscopy, the traditional kingdom has been replaced by several different kingdoms.

Protozoa

Explanation:

Organism which are single celled is known as Protozoa.Protozoa has different shapes and sizes. For example: Amoeba changes its shape.Paramaecium which has fixed shape.They live in moist habitats and it includes soil, marine environments, fresh water.Some protozoans are parasitic, it means that they live in other animals, plants and humans.Protozoans which are parasitic causes Diseases. For example Protozoans, such as Plasmodium causes Malaria.

Ifound this on google “concept 13: meiosis ii: telophase ii. a nuclear envelope forms around each set of chromosomes and cytokinesis occurs, producing four daughter cells, each with a haploid set of chromosomes. a nuclear envelope forms around each set of chromosomes.” i hope this you for what your looking for.