- A Dinoflagellates
- B Chrysophytes
- C Slime moulds
- D Protozoans
Correct answer: B. Chrysophytes
Explanation: Diatoms and golden algae (desmids) are grouped under chrysophytes, found in fresh water and marine environments with cell walls forming a frustule.
Concept context
Whittaker's five kingdom system covering Monera, Protista, Fungi, plus viruses, viroids, and lichens. A foundational NEET chapter on how living organisms are grouped.