Which of the following groups are classified under Protista?

Chrysophytes and protozoans

The correct answer is Option (4) - Chrysophytes and protozoans

The proposed five kingdom classification by R.H. Whittaker categorizes organisms into Monera, Protista, Fungi, Animalia, and Plantae based on various characteristics such as cell structure, nutritional type, and shape.

All single-celled eukaryotes are placed under Protista, but the boundaries of this kingdom are not well defined. We include Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds and Protozoans under Protista .Members of Protista are primarily aquatic.This kingdom forms a link with the others dealing with plants, animals and fungi. Being eukaryotes, the protistan cell body contains a well defined nucleus and other membrane-bound organelles. Some have flagella or cilia. Protists reproduce asexually and sexually by a process involving cell fusion and zygote formation.