Biological classification is an important topic in NEET as it forms the base of diversity of living organisms. It deals with the systematic arrangement of organisms into groups and subgroups on the basis of similarities and differences. Many PYQs from this chapter focus on topics like the five-kingdom system of classification (Monera, Protista, Fungi, Plantae, Animalia) proposed by R.H. Whittaker, characteristics of prokaryotes and eukaryotes, viruses, viroids, lichens, and differences between kingdom members. Questions are often asked about the cell wall composition of fungi and bacteria, the mode of nutrition in protists, and unique features of cyanobacteria. Students must also prepare examples of organisms belonging to each kingdom and the role of viruses as connecting links between living and non-living. Overall, this chapter is concept-based, and NEET PYQs generally test conceptual clarity and memory of examples.
Five kingdom system of classification suggested by R.H. Whittaker is not based on:
presence or absence of a well-defined nucleus
mode of reproduction
mode of nutrition
complexity of body organization
Introduction*
AIPMT 2014
Maximum nutritional diversity is found in the group:
fungi
animalia
monera
plantaе
Introduction*
AIPMT 2012
In the five kingdom classification, Chlamydomonas and
Chlorella have been included in:
protista
algae
plantae
monera
Introduction*
AIPMT Mains 2012
In the five kingdom system of classification, which
single kingdom out of the following can include bluegreen algae, nitrogen fixing bacteria and methanogenic
archaebacteria?
Plantae
Protista
Monera
Fungi
Introduction*
AIPMT 2003, 1998
In five kingdom system, the main basis of classification
is:
structure of nucleus
mode of nutrition
structure of cell wall
asexual reproduction
Introduction*
AIPMT 2002
BGA (blue green algae) are included in which of the
following groups?
Bryophytes
Prokaryotes
Protista
Fungi
Introduction*
AIPMT 1996
An important criterion for modern day classification is:
resemblance in morphology
anatomical and physiological traits
breeding habits
presence or absence of notochord.
Introduction*
AIPMT 1991
Which among the following is not a prokaryote?
Nostoc
Mycobacterium
Saccharomyces
Oscillatoria
Kingdom Monera
NEET 2018
Which among the following are the smallest living cells,
known without a definite cell wall, pathogenic to plants
as well as animals and can survive without oxygen?
Bacillus
Pseudomonas
Мусоplasma
Nostoc
Kingdom Monera
NEET 2017
Which of the following are found in extreme saline
conditions?
Archaebacteria
Eubacteria
Cyanobacteria
Mycobacteria
Kingdom Monera
NEET 2017
Methanogens belong to:
eubacteria
archaebacteria
dinoflagellates
slime moulds.
Kingdom Monera
NEET PHASE - II 2016
Archaebacteria differ from eubacteria in:
cell membrane structure
mode of nutrition
cell shape
mode of reproduction.
Kingdom Monera
AIPMT 2014
Pigment-containing membranous extensions in some
cyanobacteria are:
heterocysts
basal bodies
pneumatophores
chromatophores
Kingdom Monera
NEET 2013
Which of the following are likely to be present in deep
sea water?
Archaebacteria
Eubacteria
Blue-green algae
Saprophytic fungi
Kingdom Monera
NEET 2013
Specialised cells for fixing atmospheric nitrogen in
Nostoc are:
heterocysts
hormogonia
nodules
akinetes
Kingdom Monera
NEET Karnataka 2013
In eubacteria, a cellular component that resembles
eukaryotic cells is:
nucleus
ribosomes
cell wall
plasma membrane
Kingdom Monera
AIPMT Screening 2011
Membrane-bound organelles are absent in:
Saccharomyces
Streptococcus
Chlamydomonas
Plasmodium
Kingdom Monera
AIPMT Screening 2010
Some hyperthermophilic organisms that grow in highly
acidic (pH = 2) habitats belong to the two groups called:
eubacteria and archaea
cyanobacteria and diatoms
protists and mosses
liverworts and yeasts
Kingdom Monera
AIPMT Screening 2010
Select the correct combination of the statements (I-IV)
regarding the characteristics of certain organisms.
(I) Methanogens are Archaebacteria, which produce methane in marshy areas.
(II) Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen.
(III) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(IV) Mycoplasma lack a cell wall and can survive without oxygen.
Options:
(II), (III)
(1), (II), (III)
(II), (III), (IV)
(I), (II), (IV)
Kingdom Monera
AIPMT Mains 2010
Modern detergents contain enzyme preparations of:
acidophiles
alkaliphiles
thermoacidophiles
thermophiles
Kingdom Monera
AIPMT Screening 2008
Most of cyanobacteria (blue-green algae) belong to
kingdom.......................
Monera
Deoxythymine
Glyceride
Glycerol
Kingdom Monera
AIPMT Mains 2008
Which one of the following statements about mycoplasma
is wrong?
They are pleomorphic.
They are sensitive to Penicillin.
They cause diseases in plants.
They are also called PPLO.
Kingdom Monera
AIPMT 2007
Curing of tea leaves is brought about by the activity of:
fungi
bacteria
mycorrhiza
viruses
Kingdom Monera
AIPMT 2006
The bacterium (Clostridium botulinum) that causes
botulism is:
an obligate aerobe
a facultative anaerobe
an obligate anaerobe
a facultative aerobe
Kingdom Monera
AIPMT 2006
Which of the following unicellular organism has a
macronucleus for trophic function and one or more
micronuclei for reproduction?
Euglena
Amoeba
Paramoecium
Trypanosoma
Kingdom Monera
AIPMT 2005
Barophilic prokaryotes:
grow and multiply in very deep marine sediments
occur in water containing high concentration of barium hydroxide
readily grow and divide in sea water enriched in any soluble salt of barium
grow slowly in highly alkaline frozen lakes at high altitudes.
Kingdom Monera
AIPMT 2005
A free living nitrogen-fixing cyanobacterium which
can also form symbiotic association with the water fern
Azolla is:
Tolypothrix
Chlorella
Nostoс
Anabaena
Kingdom Monera
AIPMT 2004
A few organisms are known to grow and multiply at
temperatures of 100-105°C. They belong to:
themophilic sulphur bacteria
hot spring blue green algae
methanogenic archaebacteria
marine archaebacteria
Kingdom Monera
AIPMT 1998
Many blue-green algae occur in thermal springs (hotwater springs). The temperature tolerance of these algae
have been attributed to their:
mitochondrial structure
importance of homopolar bonds in their proteins
cell wall structure
modern cell organization
Kingdom Monera
AIPMT 1994
Match List-I with List-II
| List-I (Organisms) |
List-II (Mode of Nutrition) |
| (a) Euglenoid |
(i) Parasitic |
| (b) Dinoflagellate |
(ii) Saprophytic |
| (c) Slime mould |
(iii) Photosynthetic |
| (d) Plasmodium |
(iv) Switching between photosynthetic and heterotrophic mode |
Choose the correct answer from the options given below:
(a)- iii,(b)- iv,(c)- ii,(d)- i
(a)- iv,(b)- ii,(c)- i,(d)- iii
(a)- iv,(b)- iii,(c)- ii,(d)- i
(a)- iv,(b)- ii,(c)- iii,(d)- i
Kingdom Protista
Re-NEET 2024
Ciliates differ from all other protozoans in:
using pseudopodia for capturing prey
having a contractile vacuole for removing excess water
using flagella for locomotion
having two types of nuclei
Kingdom Protista
NEET 2018
Which of the following organisms are known as chief
producers in the oceans?
Cyanobacteria
Diatoms
Dinoflagellates
Euglenoids
Kingdom Protista
NEET 2018
Chrysophytes, euglenoids, dinoflagellates and slime moulds
are included in the Kingdom:
Protista
Fungi
Animalia
Monera
Kingdom Protista
NEET PHASE - I 2016
Select the wrong statement.
The walls of diatoms are easily destructible.
'Diatomaceous earth' is formed by the cell walls of diatoms.
Diatoms are chief producers in the oceans.
Diatoms are microscopic and float passively in water.
Kingdom Protista
NEET PHASE - II 2016
In which group of organisms the cell walls form two
thin overlapping shells which fit together?
Chrysophytes
Euglenoids
Dinoflagellates
Slime moulds
Kingdom Protista
AIPMT 2015
The cyanobacteria are also referred to as:
protists
golden algae
slime moulds
blue-green algae
Kingdom Protista
AIPMT Screening 2012
Which one of the following is a slime mould?
Physarum
Thiobacillus
Anabaena
Rhizopus
Kingdom Protista
AIPMT 2007
The thalloid body of a slime mould (myxomycetes) is
known as:
mycelium
protonema
plasmodium
fruiting body
Kingdom Protista
AIPMT 2006
What is common about Trypanosoma, Noctiluca, Monocystis
and Giardia?
These are all parasites.
These are all unicellular protists.
They have flagella.
They produce spores.
Kingdom Protista
AIPMT 2006
Auxospores and hormocysts are formed, respectively, by:
some diatoms and several cyanobacteria
some cyanobacteria and many diatoms
several cyanobacteria and several diatoms
several diatoms and a few cyanobacteria.
Kingdom Protista
AIPMT 2005
Which of the following organisms possesses
characteristics of a plant and an animal?
Euglena
Paramecium
Bacteria
Mycoplasma
Kingdom Protista
AIPMT 1995
Trypanosoma belongs to class:
Sarcodina
Zooflagellata
Ciliata
Sporozoa
Kingdom Protista
AIPMT 1989
Which of the following statements is incorrect?
Claviceps is a source of many alkaloids and LSD.
Conidia are produced exogenously and ascospores endogenously.
Yeasts have filamentous bodies with long threadlike hyphae.
Morrels and truffles are edible delicacies.
Kingdom Fungi
NEET 2019
Match Column I with Column II.
| Column I |
Column II |
| (a) Saprophyte |
(i) Symbiotic association of fungi with plant roots. |
| (b) Parasite |
(ii) Decomposition of dead organic materials. |
| (c) Lichens |
(iii) Living on living plants or animals. |
| (d) Mycorrhiza |
(iv) Symbiotic association of algae and fungi. |
Choose the correct option from the options given below:
(a)- iii, (b)- ii, (c)- i, (d)- iv
(a)- ii, (b)- i, (c)- iii, (d)- iv
(a)- ii, (b)- iii, (c)- iv, (d)- i
(a)- i, (b)- ii, (c)- iii, (d)- iv
Kingdom Fungi
NEET 2019
After karyogamy followed by meiosis, spores are produced
exogenously in:
Agaricus
Alternaria
Neurospora
Saccharomyces
Kingdom Fungi
NEET 2018
One of the major components of cell wall of most fungi
is:
peptidoglycan
cellulose
hemicellulose
chitin
Kingdom Fungi
NEET PHASE - I 2016
Which one of the following is wrong for fungi?
They are eukaryotic.
All fungi possess a purely cellulosic cell wall.
They are heterotrophic.
They are both unicellular and multicellular.
Kingdom Fungi
NEET PHASE - II 2016
Which one of the following statement is wrong?
Golden algae are also called desmids.
Eubacteria are also called false bacteria.
Phycomycetes are also called algal fungi.
Cyanobacteria are also called blue-green algae.
Kingdom Fungi
NEET PHASE - I 2016
The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:
deuteromycetes
basidiomycetes
phycomycetes
ascomycetes
Kingdom Fungi
AIPMT Latest July 2015
Which one of the following matches is correct?
Phytophthora - Aseptate mycelium - Basidiomycetes
Alternaria - Sexual reproduction absent - Deuteromycetes
Mucor - Reproduction by conjugation - Ascomycetes
Agaricus - Parasitic fungus - Basidiomycetes
Kingdom Fungi
AIPMT Cancelled 2015
Which one of the following is true for fungi?
They lack a rigid cell wall.
They are heterotrophs.
They lack nuclear membrane.
They are phagotrophs.
Kingdom Fungi
NEET Karnataka 2013
Single-celled eukaryotes are included in:
Protista
Fungi
Archaea
Monera
Kingdom Fungi
AIPMT Screening 2010
Which one is the wrong pairing for the disease and its
causal organism?
Late blight of potato- Alternaria solani
Black rust of wheat- Puccinia graminis
Loose smut ofwheat- Ustilago nuda
Root-knot of vegetables- Meloidogyne sp.
Kingdom Fungi
AIPMT Screening 2009
Which pair of the following belongs to Basidiomycetes?
Puffballs and Claviceps
Peziza and stink horns
Morchella and mushrooms
ird's nest fungi and puffballs
Kingdom Fungi
AIPMT 2007
Ergot of rye is caused by a species of:
Uncinula
Ustilago
Claviceps
Phytophthora
Kingdom Fungi
AIPMT 2007
Which of the following environmental conditions are
essential for optimum growth of
Mucor on a piece of
bread?
(I) Temperature of about 25°C
(II) Temperature of about 5°C
(III) Relative humidity of about 5%
(IV) Relative humidity of about 95%
(V) A shady place
(VI)A brightly illuminated place
Choose the answer from the following options
(II), (III) and (VI) only
(I), (III) and (V) only
(I), (IV) and (V) only
(II), (IV) and (V) only
Kingdom Fungi
AIPMT 2006
There exists a close association between the alga and the
fungus within a lichen. The fungus:
provides protection, anchorage and absorption for the algae
provides food for the alga
fixes the atmospheric nitrogen for the alga
releases oxygen for the alga.
Kingdom Fungi
AIPMT 2005
Lichens are well-known combination of an alga and a
fungus where fungus has:
a saprophytic relationship with the alga
an epiphytic relationship with the alga
a parasitic relationship with alga
a symbiotic relationship with alga.
Kingdom Fungi
AIPMT 2004
Which of the following secretes toxins during storage
conditions of crop plants?
Aspergillus
Penicillium
Fusarium
Colletotrichum
Kingdom Fungi
AIPMT 2002
Select the wrong statement.
Pseudopodia are locomotory and feeding structures in sporozoans.
Mushrooms belong to Basidiomycetes.
Cell wall is present in members of Fungi and Plantae.
Mitochondria are the powerhouse of the cell in all kingdoms except Monera.
Kingdom Plantae
NEET 2018
Cell wall is absent in:
Mycoplasma
Nostoc
Aspergillus
Funaria
Kingdom Plantae
AIPMT Latest July 2015
True nucleus is absent in:
Vaucheria
Volvoх
Anabaena
Mucor
Kingdom Plantae
AIPMT Cancelled 2015
Nuclear membrane is absent in:
Penicillium
Agaricus
Volvoх
Nostoc
Kingdom Plantae
AIPMT 2012
Absorptive heterotrophic nutrition is exhibited by:
algae
fungi
bryophytes
pteridophytes
Kingdom Plantae
AIPMT 1990
Pick up the wrong statement.
Some fungi are edible.
Nuclear membrane is present in Monera.
Cell wall is absent in Animalia.
Protists have photosynthetic and heterotrophic modes of nutrition.
Kingdom Animalia
AIPMT Latest July 2015
Which one of the following living organisms completely
lacks a cell wall?
Cyanobacteria
Sea-fan (Gorgonia)
Saccharomyces
Blue-green algae
Kingdom Animalia
AIPMT 2014
Which of the following statements is incorrect?
Viruses are obligate parasites.
Infective constituent in viruses is the protein coat.
Prions consist of abnormally folded proteins.
Viroids lack a protein coat.
Viruses, Viroids and Lichens
NEET 2019
Viroids differ from viruses in having:
DNA molecules with protein coat
DNA molecules without protein coat
RNA molecules with protein coat
RNA molecules without protein coat.
Viruses, Viroids and Lichens
NEET 2017
Which of the following statements is wrong for viroids?
They are smaller than viruses.
They cause infections.
Their RNA is of high molecular weight.
They lack a protein coat.
Viruses, Viroids and Lichens
NEET PHASE - I 2016
Select wrong statement.
The viroids were discovered by D.J. Ivanowski.
W.M. Stanley showed that viruses could be crystallized.
The term 'contagium vivum fluidum' was coined by M.W. Beijerinck.
Mosaic disease in tobacco and AIDS in human being are caused by viruses.
Viruses, Viroids and Lichens
AIPMT Latest July 2015
Which of the following shows coiled RNA strand and
capsomeres?
Polio virus
Tobacco mosaic virus
Measles virus
Retrovirus
Viruses, Viroids and Lichens
AIPMT 2014
Which statement is wrong for viruses?
All are parasites.
All of them have helical symmetry.
They have ability to synthesize nucleic acids and proteins.
Antibiotics have no effect on them.
Viruses, Viroids and Lichens
AIPMT Screening 2012
The diagram of a bacteriophage is given. In which one
of the options, all the four parts a, b, c and d are correct?
a- Tail fibres, b- Head, c- Sheath, d- Collar
a- Sheath, b- Collar, c- Head, d- Tail fibres
a- Head, b- Collar, c- Sheath, d- Tail fibres
a- Collar, b- Tail fibres, c- Head, d- Sheath
Viruses, Viroids and Lichens
AIPMT Mains 2010
T.O. Diener discovered a:
free infectious RNA
free infectious DNA
infectious protein
bacteriophage
Viruses, Viroids and Lichens
AIPMT Screening 2009
The causative agent of mad cow disease:
virus
bacterium
prion
worm
Viruses, Viroids and Lichens
AIPMT 2006
Viruses that infect bacteria multiply and cause their lysis,
are called:
lysozymes
lipolytic
lytic
lysogenic
Viruses, Viroids and Lichens
AIPMT 2004
Viruses are no more "alive" than isolated chromosomes
because:
they require both RNA and DNA
they both need food molecules
they both require oxygen for respiration
both require the environment of a cell to replicate.
Viruses, Viroids and Lichens
AIPMT 2003
Which one of the following statements about viruses is
correct?
Viruses possess their own metabolic system.
All viruses contain both RNA and DNA.
Viruses are obligate parasites.
Nucleic acid of viruses is known as capsid.
Viruses, Viroids and Lichens
AIPMT 2003
Which statement is correct for bacterial transduction?
Transfer of some genes from one bacteria to another bacteria through virus.
Transfer of some genes from one bacteria to another bacteria by conjugation.
Bacteria obtained its DNA directly.
Bacteria obtained DNA from other external source.
Viruses, Viroids and Lichens
AIPMT 2002
Transfer of genetic information from one bacterium to another in the transduction process is through:
bacteriophages released from the donor bacterial strain
another bacterium having special organ for conjugation
physical contact between donor and recipient strains
conjugation between opposite strain bacterium.
Viruses, Viroids and Lichens
AIPMT 1998
Transduction in bacteria is mediated by:
plasmid vectors
phage vectors
cosmids
F-factors
Viruses, Viroids and Lichens
AIPMT 1994
Organisms which are indicator of SO2 pollution of air:
mossess
lichens
mushrooms
puffballs
Viruses, Viroids and Lichens
AIPMT 1992
Lichens indicate SO2 pollution because they:
show association between algae and fungi
grow faster than others
are sensitive to SO2
flourish in SO2 rich environment.
Viruses, Viroids and Lichens
AIPMT 1989
Ncert Book Class 1
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