Kingdom Classification — Homi Bhabha Class 9 Biology MCQs with Solutions
Free Homi Bhabha Class 9 Biology Kingdom Classification MCQs with step-by-step solutions (17 questions). Part of Classification of Living Organisms. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Kingdom Classification · medium · theory
The five-kingdom system of classification was proposed by:
A. R. H. Whittaker ✓ Correct
B. Carolus Linnaeus
C. Charles Darwin
D. Gregor Mendel
Solution: Whittaker proposed the five-kingdom classification in 1969.
Q2 — Kingdom Classification · medium · theory
Which of the following is NOT one of the five kingdoms?
A. Fungi
B. Protista
C. Bacteria ✓ Correct
D. Monera
Solution: The five kingdoms are Monera, Protista, Fungi, Plantae and Animalia; "Bacteria" belongs within Monera.
Q3 — Kingdom Classification · hard · theory
Prokaryotic organisms such as bacteria are placed in the kingdom:
A. Fungi
B. Protista
C. Monera ✓ Correct
D. Plantae
Solution: Kingdom Monera contains prokaryotes like bacteria and cyanobacteria.
Q4 — Kingdom Classification · hard · theory
Unicellular eukaryotes such as Amoeba and Paramecium belong to the kingdom:
A. Animalia
B. Protista ✓ Correct
C. Monera
D. Fungi
Solution: Kingdom Protista includes single-celled eukaryotes.
Q5 — Kingdom Classification · medium · theory
Mushrooms and yeast are placed in the kingdom:
A. Monera
B. Animalia
C. Plantae
D. Fungi ✓ Correct
Solution: Fungi are heterotrophic organisms with cell walls of chitin; mushrooms and yeast belong here.
Q6 — Kingdom Classification · hard · theory
The cell walls of fungi are made up of:
A. protein
B. cellulose
C. starch
D. chitin ✓ Correct
Solution: Fungal cell walls are made of chitin, unlike the cellulose walls of plants.
Q7 — Kingdom Classification · medium · theory
Organisms of the kingdom Animalia are characterised as:
A. multicellular heterotrophs without cell walls ✓ Correct
B. unicellular only
C. prokaryotes
D. autotrophs with cell walls
Solution: Animals are multicellular, heterotrophic and lack cell walls.
Q8 — Kingdom Classification · medium · theory
Members of the kingdom Plantae make their own food and are therefore:
A. heterotrophs
B. saprophytes
C. autotrophs ✓ Correct
D. parasites
Solution: Plants are autotrophs, making food by photosynthesis.
Q9 — Kingdom Classification · hard · theory
The two-word scientific naming system (genus + species) was given by:
A. Aristotle
B. Whittaker
C. Carolus Linnaeus ✓ Correct
D. Robert Hooke
Solution: Linnaeus introduced binomial nomenclature, using a genus and species name for each organism.
Q10 — Kingdom Classification · medium · theory
The main basis of the five-kingdom classification includes cell structure and the:
A. habitat only
B. size of the organism
C. colour of the organism
D. mode of nutrition ✓ Correct
Solution: Classification is based on cell type (pro/eukaryotic), cellular organisation and mode of nutrition.
Q11 — Kingdom Classification · easy · theory
Before Whittaker proposed the five-kingdom system, all living things were grouped into just two kingdoms (plants and animals). A major problem this two-kingdom system could NOT solve was:
A. How to measure the size of a single cell
B. Where to place organisms like Euglena that are both plant-like (photosynthetic) and animal-like (motile) ✓ Correct
C. Which organisms were living and which were non-living
D. How to name every organism with two words
Solution: Organisms such as Euglena make food like a plant yet move like an animal, so they did not fit neatly into either the plant or the animal kingdom. This limitation of the two-kingdom system led to newer schemes such as the five-kingdom classification.
Q12 — Kingdom Classification · easy · theory
Organism P has no membrane-bound (true) nucleus, while organism Q is a single-celled organism that does have a true nucleus. Into which kingdoms are P and Q best placed?
A. P in Protista and Q in Monera
B. Both in Monera
C. Both in Animalia
D. P in Monera and Q in Protista ✓ Correct
Solution: A prokaryote with no true nucleus (P) belongs to Kingdom Monera, whereas a unicellular eukaryote with a true nucleus (Q) belongs to Kingdom Protista.
Q13 — Kingdom Classification · medium · theory
Assertion: Autotrophic and heterotrophic bacteria are all placed together in Kingdom Monera. Reason: The single most important feature used to define Kingdom Monera is the absence of a true (membrane-bound) nucleus. Which is correct?
A. Both are true, but the reason does not explain the assertion
B. Both the assertion and the reason are true, and the reason correctly explains the assertion ✓ Correct
C. The assertion is true but the reason is false
D. The assertion is false but the reason is true
Solution: Kingdom Monera groups all prokaryotes together; the defining criterion is the lack of a membrane-bound nucleus, not the mode of nutrition. So even though the bacteria differ in nutrition, the absence of a true nucleus keeps them in one kingdom.
Q14 — Kingdom Classification · medium · theory
In the classification hierarchy used by biologists, which sequence correctly runs from the LARGEST group to the SMALLEST group?
A. Genus, Species, Family, Class, Order, Phylum, Kingdom
B. Kingdom, Phylum, Class, Order, Family, Genus, Species ✓ Correct
C. Species, Genus, Family, Order, Class, Phylum, Kingdom
D. Kingdom, Class, Phylum, Family, Order, Genus, Species
Solution: The taxonomic hierarchy descends Kingdom > Phylum > Class > Order > Family > Genus > Species, with each lower group containing fewer organisms that share more characteristics.
Q15 — Kingdom Classification · medium · theory
The scientific name of the mango is Mangifera indica. Which statement about writing this two-word name correctly is TRUE?
A. Both words must begin with capital letters
B. The name must never be underlined or italicised
C. The species name is always written first
D. The genus name (Mangifera) begins with a capital letter and the species name (indica) with a small letter, and both are printed in italics ✓ Correct
Solution: In binomial nomenclature the genus name starts with a capital letter and the species name with a lowercase letter; in print both are italicised (or underlined when handwritten).
Q16 — Kingdom Classification · hard · theory
A student argues that fungi should be placed in Kingdom Plantae because, like plants, they are non-motile and have cell walls. The BEST reason for keeping fungi in a separate kingdom is that fungi:
A. Are heterotrophs that absorb their food, whereas plants are autotrophs that make their own food by photosynthesis ✓ Correct
B. Are always unicellular, unlike plants
C. Completely lack cell walls
D. Are prokaryotic while plants are eukaryotic
Solution: Although fungi resemble plants in being non-motile and having cell walls, they cannot photosynthesise. They are heterotrophic (saprophytic or parasitic) and their walls are made of chitin, so they form a distinct kingdom.
Q17 — Kingdom Classification · hard · theory
Which of the following groups contains organisms that ALL belong to the SAME kingdom?
A. Bacterium, yeast and housefly
B. Mushroom, Amoeba and mango tree
C. Fern, earthworm and bacterium
D. Amoeba, Paramecium and Euglena ✓ Correct
Solution: Amoeba, Paramecium and Euglena are all unicellular eukaryotes belonging to Kingdom Protista. Each of the other groups mixes organisms from different kingdoms.