Answer: A spore-forming parasitic stage.
- A Bearing a fringe of many cilia
- B A spore-forming parasitic stage
- C Moving by many pseudopodia
- D Swimming with two long flagella
Correct answer: B. A spore-forming parasitic stage
Explanation: Sporozoans are parasitic protists with an infectious spore-like stage and no locomotory organs in the adult.
Whittaker's five-kingdom system (1969) groups all cellular life by cell structure and nutrition; viruses, viroids, and lichens fall outside this system entirely since they aren't independently classifiable as one of the five.
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.