Five Kingdom

8 MCQs9-step worked example
Source: NCERT The Living WorldPYQ coverage: NEET 2020, 2021, 2022, 2023, 2024, 2025Official key: NTA-verifiedLast reviewed: May 2026

Lesson

Whittaker's five-kingdom classification is one of the most frequently tested recall topics from NCERT Class 11 Biology Chapter 2. The system replaced the older two-kingdom classification (Plantae and Animalia) by using five criteria — cell structure, body organisation, mode of nutrition, reproduction, and phylogenetic relationships — to sort all living organisms into Monera, Protista, Fungi, Plantae, and Animalia.

Why Whittaker, not Linnaeus? The two-kingdom system forced organisms like bacteria, fungi, and unicellular eukaryotes into either Plantae or Animalia, creating artificial groupings. Whittaker (1969) resolved this by giving prokaryotes their own kingdom (Monera) and separating fungi (absorptive heterotrophs) from plants (autotrophs).

The five kingdoms at a glance:

KingdomCell typeOrganisationNutrition
MoneraProkaryoticUnicellularAutotrophic or heterotrophic
ProtistaEukaryoticUnicellularAuto-, hetero-, or mixotrophic
FungiEukaryoticMulti- (rarely uni-)Absorptive heterotrophic
PlantaeEukaryoticMulticellularAutotrophic (photosynthetic)
AnimaliaEukaryoticMulticellularIngestive heterotrophic

NEET watch-out: Questions frequently test the criteria Whittaker used — not just the kingdom names. A common distractor lists "habitat" or "locomotion" as a Whittaker criterion. It is not. The five criteria are: cell structure, body organisation, mode of nutrition, mode of reproduction, and phylogenetic relationships (NCERT Class 11 Biology Chapter 2, page 15).

Another frequent ask: which kingdoms can include autotrophs? Both Monera and Protista contain autotrophic members alongside heterotrophs — this mixed nutrition is a defining feature that separates them from Fungi (always heterotrophic).

Practice MCQs

Select an option to see the explanation. Wrong answers show why your choice was tempting — and name the exact trap it exploits.

MCQ 1Easy RecallPractice

Which of the following is NOT a criterion used by Whittaker for the five-kingdom classification?

MCQ 2Easy RecallPractice

The five-kingdom classification was proposed by:

MCQ 3Easy RecallPractice

In Whittaker's classification, which kingdom includes organisms that are exclusively multicellular and ingestive heterotrophic?

MCQ 4Direct ApplicationPractice

Which pair of kingdoms in Whittaker's system can include both autotrophic and heterotrophic members?

MCQ 5Direct ApplicationPractice

The major basis for shifting organisms like fungi from Plantae to a separate kingdom in Whittaker's system was:

MCQ 6Easy RecallPractice

Which kingdom in Whittaker's classification contains exclusively prokaryotic organisms?

MCQ 7Direct ApplicationPractice

The two-kingdom classification system was inadequate because:

MCQ 8CalculationPractice

Consider the following statements about Whittaker's five-kingdom classification:

Worked Example

  1. 1

    Given

    - Unicellular - Eukaryotic - Photosynthetic - No cell wall

  2. 2

    Required

    Identify the correct kingdom under Whittaker's classification.

  3. 3

    Concept

    Whittaker's classification uses five criteria: cell structure, body organisation, mode of nutrition, mode of reproduction, and phylogenetic relationships. We apply these sequentially to narrow down the kingdom.

  4. 4

    Formula / Rule

    No mathematical formula applies. The classification key is: - Prokaryotic → Monera - Eukaryotic + unicellular → Protista - Eukaryotic + multicellular + autotrophic → Plantae - Eukaryotic + multicellular + absorptive heterotrophic → Fungi - Eukaryotic + multicellular + ingestive heterotrophic → Animalia

  5. 5

    Substitution

    The organism is eukaryotic (eliminates Monera) and unicellular (eliminates Plantae, Fungi, Animalia — all primarily multicellular). This places it in Protista.

  6. 6

    Reasoning check

    Photosynthesis might tempt placement in Plantae, but Plantae organisms are multicellular. Protista accommodates photosynthetic unicellular eukaryotes (e.g. *Euglena*, certain dinoflagellates). The absence of a cell wall is consistent — many protists lack cell walls.

  7. 7

    Final answer

    **Kingdom Protista.**

  8. 8

    Common trap

    The photosynthesis cue tempts students to select Plantae. But Whittaker's system places unicellular eukaryotic photosynthesisers in Protista regardless of nutritional mode. Body organisation (unicellular vs multicellular) takes precedence in narrowing the kingdom.

  9. 9

    Similar NEET-style question

    "A prokaryotic organism that performs photosynthesis belongs to which kingdom?" Answer: Monera — the prokaryotic cell structure overrides the autotrophic nutrition and places it in Monera (e.g. cyanobacteria), not Plantae. ---

Before solving, remember these

Key Fact

Five-kingdom classification

Whittaker (1969) proposed five kingdoms: Monera, Protista, Fungi, Plantae, Animalia. Criteria: cell type, body organisation, mode of nutrition, reproduction, phylogeny.

-- NCERT Class 11 Biology, Ch. 2, p. 15

Exam Traps & Common Mistakes

These are the exact patterns that cause wrong answers in NEET. Each trap includes when it triggers and how to avoid it.

Trap

Monera vs Protista confusion

Category: Similar Terms

Both kingdoms include single-celled organisms but Monera is prokaryotic; Protista eukaryotic.

When it triggers

Question lists organisms and asks for kingdom; tempts placing all unicellulars in same kingdom.

How to avoid

Test for nucleus: prokaryote → Monera; eukaryote → Protista regardless of being unicellular.

Trap

Genus and species capitalisation/italicisation reversed

Category: Similar Terms

Binomial nomenclature: genus capitalised, species lowercased; both italicised. Reversing or non-italicising changes the entity.

When it triggers

Question presents a Latin name and asks for the correct typography or which name is genus.

How to avoid

Genus is ALWAYS the first word, capitalised; species is the second, lowercase; both italicised in print.

Past Year Questions

62 questions from NEET 2020, 2021, 2022, 2023, 2024, 2025. Answers verified against NTA official keys.

NEET 2025

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : All vertebrates are chordates but all chordates are not vertebrate. Reason (R) : The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below:

1(A) is false but (R) is true
2Both (A) and (R) are true and (R) is the correct explanation of (A)
3Both (A) and (R) are true but (R) is not the correct explanation of (A)
4(A) is true but (R) is false
NTA Answer: Option 2(final)
NEET 2025

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled. Reason (R) : The egg apparatus has 2 polar nuclei. In the light of the above statements, choose the correct answer from the options given below :

1A is false but R is true
2Both A and R are true and R is the correct explanation of A
3Both A and R are true but R is NOT the correct explanation of A
4A is true but R is false
NTA Answer: Option 4(final)
NEET 2025

Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization. A. Multicellular heterotrophs with cell wall made of chitin. B. Heterotrophs with tissue/organ/organ system level of body organization. C. Prokaryotes with cell wall made of polysaccharides and amino acids. D. Eukaryotic autotrophs with tissue/organ level of body organization. E. Eukaryotes with cellular body organization. Choose the correct answer from the options given below :

1C, E, A, B, D
2A, C, E, B, D
3C, E, A, D, B
4A, C, E, D, B
NTA Answer: Option 3(final)
NEET 2025

Which one of the following statements refers to Reductionist Biology?

1Behavioural approach to study and understand living organisms
2Physico-chemical approach to study and understand living organisms
3Physiological approach to study and understand living organisms
4Chemical approach to study and understand living organisms
NTA Answer: Option 2(final)
NEET 2024

Given below are two statements: Statement I : Parenchyma is living but collenchyma is dead tissue. Statement II : Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms. In the light of the above statements, choose the correct answer from the options given below:

1Both Statement I and Statement II are true
2Both Statement I and Statement II are false
3Statement I is true but Statement II is false
4Statement I is false but Statement II is true
NTA Answer: Option 4(final)
NEET 2023

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R: Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage. Reason R : Protonema develops directly from spores produced in capsule. In the light of the above statements, choose the most appropriate answer from options given below:

1Both A and R are correct but R is NOT the correct explanation of A
2A is correct but R is not correct
3A is not correct but R is correct
4Both A and R are correct and R is the correct explanation of A
NTA Answer: Option 4(final)
NEET 2023

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R : Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents. Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. In the light of the above statements, choose the correct answer from the options given below :

1Both A and R are true but R is NOT the current explanation of A
2A is true but R is false
3A is false but R is true
4Both A and R are true and R is the correct explanation of A
NTA Answer: Option 2(final)
NEET 2023

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem. Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive node instead of leaves. In the light of the above statements, choose the correct answer from the options given below :

1Both A and R are true but R is NOT the correct explanation of A
2A is true but R is false
3A is false but R is true
4Both A and R are true and R is the correct explanation of A
NTA Answer: Option 4(final)
NEET 2023

Given below are two statements: Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid. Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome. In the light of the above statements, choose the correct answer from the options given below:

1Both Statement I and Statement II are false.
2Statement I is correct but Statement II is false.
3Statement I is incorrect but Statement II is true.
4Both Statement I and Statement II are true.
NTA Answer: Option 3(final)
NEET 2023

Match List I with List II with respect to human eye. List I List II A. Fovea I. Visible coloured portion of eye that regulates diameter of pupil. B. Iris II. External layer of eye formed of dense connective tissue. C. Blind spot III. Point of greatest visual acuity or resolution. D. Sclera IV. Point where optic nerve leaves the eyeball and photoreceptor cells are absent. Choose the correct answer from the options given below:

1A-IV, B-III, C-II, D-I
2A-I, B-IV, C-III, D-II
3A-II, B-I, C-III, D-IV
4A-III, B-I, C-IV, D-II
NTA Answer: Option 4(final)
NEET 2023

Match List I with List II. List I List II (Interacting species) (Name of interaction) A. A Leopard and a Lion in a forest/grassland I. Competition B. A Cuckoo laying egg in a Crow’s nest II. Brood parasitism C. Fungi and root of a higher plant in Mycorrhizae III. Mutualism D. A cattle egret and a Cattle in a field IV. Commensalism Choose the correct answer from the options given below.

1A-I, B-II, C-IV, D-III
2A-III, B-IV, C-I, D-II
3A-II, B-III, C-I, D-IV
4A-I, B-II, C-III, D-IV
NTA Answer: Option 4(final)
NEET 2023

The unique mammalian characteristics are:

1hairs, pinna and mammary glands
2hairs, pinna and indirect development
3pinna, monocondylic skull and mammary glands
4hairs, tympanic membrane and mammary glands
NTA Answer: Option 1(final)
NEET 2022

Identify the correct set of statements : (a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea (b) Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin (c) Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves (d) Rhizophora shows vertically upward growing roots that help to get oxygen for respiration (e) Subaerially growing stems in grasses and strawberry help in vegetative propagation Choose the correct answer from the options given below :

1(a), (b), (d) and (e) Only
2(b) and (c) Only
3(a) and (d) Only
4(b), (c), (d) and (e) Only
NTA Answer: Option 4(final)
NEET 2022

Match the plant with the kind of life cycle it exhibits: List-I List-II (a) Spirogyra (i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte (b) Fern (ii) Dominant haploid free-living gametophyte (c) Funaria (iii) Dominant diploid sporophyte alternating with reduced gametophyte called prothallus (d) Cycas (iv) Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte Choose the correct answer from the options given below :

1(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
2(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
4(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
NTA Answer: Option 3(final)
NEET 2022

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : All vertebrates are chordates but all chordates are not vertebrates. Reason (R) : Notochord is replaced by vertebral column in the adult vertebrates. In the light of the above statements, choose the most appropriate answer from the option given below :

1(A) is not correct but (R) is correct
2Both (A) and (R) are correct and (R) is the correct explanation of (A)
3Both (A) and (R) are correct but (R) is not the correct explanation of (A)
4(A) is correct but (R) is not correct
NTA Answer: Option 2(final)
NEET 2022

In the taxonomic categories which hierarchical arrangement in ascending order is correct in case of animals?

1Kingdom, Order, Phylum, Class, Family, Genus, Species
2Kingdom, Phylum, Class, Order, Family, Genus, Species
3Kingdom, Class, Phylum, Family, Order, Genus, Species
4Kingdom, Order, Class, Phylum, Family, Genus, Species Answer (2*) 178. Given below are two statements : Statement I : Fatty acids and glycerols cannot be absorbed into the blood. Statement II : Specialized lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately
NTA Answer: Option 2(final)
NEET 2021

Gemmae are present in (4) 2, 4-D

1Some Liverworts Answer (4)
2Mosses 125. Which of the following algae produce Carrageen?
3Pteridophytes (1) Blue-green algae
4Some Gymnosperms (2) Green algae
NTA Answer: Option 1(final)
NEET 2021

With regard to insulin choose correct options. (b) Echinoderms are triploblastic and coelomate animals. (a)C-peptide is not present in mature insulin. (c) Round worms have organ-system level of body (b)The insulin produced by rDNA technology has C- organization. peptide. (d) Comb plates present in ctenophores help in (c)The pro-insulin has C-peptide digestion. (d)A-peptide and B-peptide of insulin are (e) Water vascular system is characteristic of interconnected by disulphide bridges. Echinoderms. Choose the correct answer from the option given Choose the correct answer from the options given

1(a) and (d) only (1) (b), (c) and (e) are correct
2(b) and (d) only (2) (c), (d) and (e) are correct
3(a), (b) and (c) are correct (3) (b) and (c) only
4(a), (d) and (e) are correct (4) (a), (c) and (d) only
NTA Answer: Option 1(final)
NEET 2021

Match List - I with List - II (b) 'A' band widens List - I List - II (c) 'I' band reduces in width (a) Adaptive (i) Selection of (d) Myosine hydrolyzes ATP, releasing the ADP and radiation resistant varieties Pi due to excessive use of herbicides (e) Z-lines attached to actins are pulled inwards and pesticides Choose the correct answer from the options given (b) Convergent (ii) Bones of forelimbs beloow evolution in Man and Whale

1(b), (d), (e), (a) only (c) Divergent (iii) Wings of Butterfly evolution and Bird
2(a), (c), (d), (e) only (d) Evolution by (iv) Darwin Finches
3(a), (b), (c), (d) only anthropogenic
4(b), (c), (d), (e) only action
NTA Answer: Option 2(final)
NEET 2020

ÁŸêŸÁ‹Áπà ◊ ‚ ∑§ÊÒŸ ‚Ê ÿÈÇ◊ ∞∑§ ∑§Ê Á‡Ê∑§Ëÿ ‡ÊÒflÊ‹Ê ∑§Ê 91. Which of the following pairs is of unicellular „Ò? algae ?

1Chlorella and Spirulina (1) Ä‹Ê ⁄ U‹Ê •ÊÒ⁄U S¬ÊßL§‹ËŸÊ
2Laminaria and Sargassum (2) ‹ÒÁ◊Ÿ Á⁄UÿÊ •ÊÒ⁄U ‚Ê⁄UªÊ‚◊
3Gelidium and Gracilaria (3) ¡ Á‹Á«Uÿ◊ •ÊÒ⁄U ª˝ÊÁ‚‹ Á⁄UÿÊ
4Anabaena and Volvox (4) ∞ ŸÊ’ËŸÊ •ÊÒ⁄U flÊÚÀflÊÚÄ‚
NTA Answer: Option 1(final)
NEET 2020

Á∑§‚ ÁflÁœ mÊ⁄UÊ ’Ë∑§ÊŸ ⁄UË ∞ flË¡ ∞fl ◊Ò⁄UËŸÊ ⁄ Uê‚ ‚ ÷ «∏ ∑§Ë 94. By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino Ÿß¸ ŸS‹ “Á„‚Ê⁄U« U‹” ÃÒÿÊ⁄U ∑§Ë ªÿË „Ò? rams ?

1•Ã —¬¡˝ ŸŸ (1) Inbreeding
2’Á„—¬˝¡ŸŸ (2) Out crossing
3©à¬Á⁄UfløŸ ¬˝¡ŸŸ (3) Mutational breeding
4‚∑ §⁄UáÊ (4) Cross breeding
NTA Answer: Option 4(final)
NEET 2020

ÿÁŒ ŒÊ ‹ªÊÃÊ⁄U ˇÊÊ⁄U ÿÈÇ◊Ê ∑ § ’Ëø ∑§Ë ŒÍ⁄UË 0.34 nm „Ò •ÊÒ⁄U 106. If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a ∞∑§ S߬ÊÿË ∑§Ê Á‡Ê∑§Ê ∑§Ë DNA ∑§Ë Ám∑È §«U‹Ë ◊ ˇÊÊ⁄U ÿÈÇ◊Ê DNA double helix in a typical mammalian cell is ∑§Ë ∑ȧ‹ ‚ ÅÿÊ 6.6×109 bp „Ò– Ã’ DNA ∑§Ë ‹ê’Ê߸ 6.6×109 bp, then the length of the DNA is „Ê ªË ‹ª÷ª — approximately :

12.7 ◊Ë≈U⁄U (1) 2.7 meters
22.0 meters (2) 2.0 ◊Ë≈U⁄U
32.5 meters (3) 2.5 ◊Ë≈U⁄U
42.2 meters (4) 2.2 ◊Ë≈U⁄U
NTA Answer: Option 4(final)
NEET 2020

ÁŸêŸÁ‹Áπà ◊ ‚ ‚„Ë ÿÈÇ◊ ∑§Ê øÈÁŸ∞ —

1∞Ä‚Ê ãÿÍÁÄ‹ÿ ¡ - «Ë.∞Ÿ.∞. ◊ ÁflÁ‡Êc≈U 133. Choose the correct pair from the following : SÕÊŸÊ ¬⁄U ∑§Ê≈U (1) Exonucleases - Make cuts at specific ‹ªÊÃÊ „Ò positions within DNA
2‹Êߪ ¡ - ŒÊ «UË.∞Ÿ.∞. ∑ § (2) Ligases - Join the two DNA •áÊÈ•Ê ∑§Ê ¡Ê «∏ÃÊ „Ò molecules
3¬ÊÚÁ‹◊⁄ U¡ - «UË.∞Ÿ.∞. ∑§Ê πá«UÊ ◊ ÃÊ «∏ÃÊ „Ò (3) Polymerases - Break the DNA into
4ãÿÍÁÄ‹ÿ ¡ - «UË.∞Ÿ.∞. ∑ § ŒÊ fragments ⁄UîÊÈ∑§Ê ∑§Ê ¬ÎÕ∑§ (4) Nucleases - Separate the two strands ∑§⁄UÃÊ „Ò of DNA
NTA Answer: Option 2(final)

How NEET usually asks this

Recurring question shapes from past papers. Each pattern shows why wrong options look tempting.

Identification, classification, taxonomy questions across kingdoms and major phyla

RecallMedium

Common distractors

plant life cycle ploidy confusion

Double fertilization produces two products; students assign 2n to both zygote and endosperm nucleus, forgetting the two polar nuclei each contribute 1n.

gymnosperm angiosperm feature swap

Both groups produce seeds; students attribute angiosperm features (flowers, fruit) to gymnosperms or deny gymnosperm-exclusive features (naked seeds, cones).

disease causative organism mismatch

Many diseases are associated with look-alike organism classes; students swap bacterial, fungal, protozoan, and viral agents for well-known diseases.

coelomate pseudocoelomate acoelomate confusion

Porifera has a spongocoel water canal; students interpret any internal space as a coelom and classify sponges as pseudocoelomate rather than acoelomate.

chordate nerve cord reversal

Students recall 'dorsal' but forget 'hollow single'; canonical distractor 'mid-dorsal, solid and double' catches the partially-right recall.

fungi classification non criterion

Mode of nutrition is used to define kingdom Fungi overall; students incorrectly extend it as a criterion for classification WITHIN fungi.

assertion reason unchecked reason

In A-R format, a true assertion with a plausible-sounding reason tempts students into selecting option A without independently verifying whether the reason is correct and whether it genuinely explains the assertion.

prokaryote membrane organelle swap

Students learn prokaryotes lack membrane-bound organelles but incorrectly exclude ribosomes (not membrane-bound) from prokaryotes, or assume prokaryotes have some organelles simply because they are complex organisms.

Sources

NCERT refs: Class 11 Biology Chapter 2, p.15

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