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NEET-UG Biology

Two-kingdom to five-kingdom classification — practice questions

7 questions in the bank on this idea. Below are 7 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L1 · recall

    Who proposed the five-kingdom system of classification?

    • A. R.H. Whittaker
    • B. Carolus Linnaeus
    • C. Ernst Haeckel
    • D. Carl Woese

  2. Question 2 · difficulty L1 · recall

    Which kingdom in Whittaker's five-kingdom system contains prokaryotic organisms?

    • A. Protista
    • B. Monera
    • C. Fungi
    • D. Plantae

  3. Question 3 · difficulty L2 · understanding

    Why was the traditional two-kingdom system inadequate for classifying organisms such as bacteria and fungi?

    • A. It did not clearly separate prokaryotes from eukaryotes or fungi from plants
    • B. It contained too many kingdoms for practical use
    • C. It excluded all multicellular organisms
    • D. It classified organisms only by geographic distribution

  4. Question 4 · difficulty L2 · understanding

    Which criterion most directly separates Monera from Protista in the five-kingdom system?

    • A. Presence or absence of a true nucleus
    • B. Mode of locomotion
    • C. Ability to reproduce
    • D. Habitat in water

  5. Question 5 · difficulty L3 · application

    An unknown organism is unicellular, has a membrane-bound nucleus and obtains nutrition by absorption. Which kingdom-level placement is more consistent with Whittaker's criteria than Monera?

    • A. Protista
    • B. Monera
    • C. Animalia
    • D. Plantae

  6. Question 6 · difficulty L3 · application

    A classifier wants to separate organisms that ingest food from organisms that absorb dissolved organic matter after extracellular digestion. Which pair of kingdoms is most directly distinguished by this nutritional difference?

    • A. Animalia and Fungi
    • B. Plantae and Monera
    • C. Protista and Plantae
    • D. Monera and Animalia

  7. Question 7 · difficulty L4 · analysis

    Two organisms are both multicellular and eukaryotic. One is photosynthetic with cellulose walls, while the other is heterotrophic with chitinous walls and absorptive nutrition. Which classification follows?

    • A. The first is Plantae and the second is Fungi
    • B. Both belong to Plantae
    • C. Both belong to Fungi
    • D. The first is Protista and the second is Animalia

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