Question

Which of the following statement/s is/are not the characteristic feature of Kingdom Protista?
$(a)$ They include chrysophytes, dinoflagellates, euglenoids, slime molds and protozoans.
$(b)$ Chief producers in the ocean are diatoms.
$(c)$ Toxins are released by some of the members of this kingdom.
$(d)$ They are either unicellular or multicellular.

• A. a and c
• B. b and d
• C. b and c
• D. Only d

Answer 1

Answer: (D)

All single-celled eukaryotes are placed under Protista, but the boundaries of this kingdom are not well-defined. What may be 'a photosynthetic protistan' to one biologist may be 'a plant' to others. Chrysophytes, dinoflagellates, euglenoids, slime moulds and protozoans are included under Protista. Members of Protista are primarily aquatic. Diatoms are chief producers of the ocean, and dinoflagellates are known to release some toxic substances.