Biological Classification · Biology · NEET
MCQ (Single Correct Answer)
1
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:
NEET 2025
2
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 :
NEET 2025
3
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:
NEET 2024 (Re-Examination)
4
Match List I with List II
| List - I | List - II | ||
|---|---|---|---|
| A. | Rhizopus | I. | Mushroom |
| B. | Ustilago | II. | Smut fungus |
| C. | Puccinia | III. | Bread mould |
| D. | Agaricis | IV. | Rust fungus |
Choose the correct answer from the options given below:
NEET 2024
5
Which one of the following is not a criterion for classification of fungi?
NEET 2024
6
House fly belongs to _____ family.
NEET 2023 Manipur
7
'X' and 'Y' are the components of Binomial nomenclature. This naming system was proposed by 'Z' :
NEET 2023 Manipur
8
Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by ______.
NEET 2022 Phase 2
9
Given below are two statements:
Statement I : Mycoplasma can pass through less than 1 micron filter size.
Statement II : Mycoplasma are bacteria with cell wall.
In the light of the above statements, choose the most appropriate answer from the options given below :
NEET 2022 Phase 1
10
Which of the following is a correct statement?
NEET 2022 Phase 1
11
Which of the following statements is correct?
NEET 2021
12
Which of the following is correct about viroids?
NEET 2020 Phase 1
13
Which of the following statement is incorrect?
NEET 2019
14
Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus :
NEET 2019
15
Which of the following statements is incorrect?
NEET 2019
16
Which among the following is not a prokaryote?
NEET 2018
17
Select the wrong statement.
NEET 2018
18
Oxygen is not produced during photosynthesis by
NEET 2018
19
After karyogamy followed by meiosis, spores are produced exogenously in
NEET 2018
20
Ciliates differ from all other protozoans in
NEET 2018
21
Which of the following organisms are known as chief producers in the oceans?
NEET 2018
22
Viroids differ from viruses in having
NEET 2017
23
Which of the following are found in extreme saline conditions?
NEET 2017
24
Which of the following components provides sticky character to the bacterial cell?
NEET 2017
25
DNA replication in bacteria occurs
NEET 2017
26
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survise without oxygen?
NEET 2017
27
Methanogens belong to
NEET 2016 Phase 2
28
Select the wrong statement.
NEET 2016 Phase 2
29
Which one of the following is wrong for fungi?
NEET 2016 Phase 2
30
Chrysophytes, Euglenoids, Dinoflagellates
and Slime moulds are included in the Kingdom
NEET 2016 Phase 1
31
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the
NEET 2016 Phase 1
32
Which one of the following statements is wrong?
NEET 2016 Phase 1
33
Which of the following statements is wrong for viroids?
NEET 2016 Phase 1
34
One of the major components of cell wall of most fungi is
NEET 2016 Phase 1
35
In which group of organisms the cell walls form two thin overlapping shells which fit together?
AIPMT 2015
36
The imperfect fungi which are decomposers
of litter and help in mineral cycling belong to
AIPMT 2015
37
Select the wrong statement.
AIPMT 2015
38
Pick up the wrong statement.
AIPMT 2015
39
The structures that help some bacteria to attach to rocks and/or host tissues are
AIPMT 2015
40
Choose the wrong statement.
AIPMT 2015
41
Cell wall is absent in
AIPMT 2015
42
Which one of the following matches is correct?
AIPMT 2015 Cancelled Paper
43
True nucleus is absent in
AIPMT 2015 Cancelled Paper
44
The motile bacteria are able to move by
AIPMT 2014
45
Which of the following shows coiled RNA strand and capsomeres?
AIPMT 2014
46
Five kingdom system of classification suggested by R.H. Whittaker is not based on
AIPMT 2014
47
Archaebacteria differ from eubacteria in
AIPMT 2014
48
Which structures perform the function of mitochondria in bacteria?
AIPMT 2014
49
Anoxygenic photosynthesis is characteristic of
AIPMT 2014
50
Viruses have
AIPMT 2014
51
Why is a capsule advantageous to a bacterium?
NEET 2013 (Karnataka)
52
Which one of the following is true for fungi?
NEET 2013 (Karnataka)
53
Pigment containing membranous extensions in some cyanobacteria are
NEET 2013
54
Which of the following are likely to be present in deep sea water?
NEET 2013
55
In the five kingdom classification, Chlamydomonas and Chlorella have been included in
AIPMT 2012 Mains
56
The cyanobacteria are also referred to as
AIPMT 2012 Prelims
57
Maximum nutritional diversity is found in the group
AIPMT 2012 Prelims
58
Which statement is wrong for viruses?
AIPMT 2012 Prelims
59
Nuclear membrane is absent in
AIPMT 2012 Prelims
60
The most abundant prokaryotes helpful to humans in making curd ftom milk and in production of antibiotics are the ones categorised as
AIPMT 2012 Prelims
61
Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?
AIPMT 2012 Prelims
62
Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?
AIPMT 2012 Prelims
63
The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of
AIPMT 2011 Mains
64
Which one of the following is incorrectly matched?
AIPMT 2011 Prelims
65
In eubacteria, a cellular component that resembles eukaryotic cell is
AIPMT 2011 Prelims
66
Which one of the following organisms is not an eukaryotic cells?
AIPMT 2011 Prelims
67
Which one of the following also acts as a catalyst in a bacterial cell?
AIPMT 2011 Prelims
68
Black (stem) rust of wheat is caused by
AIPMT 2010 Mains
69
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 alga which fixes atmospheric nitrogen.
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(iv) Mycoplasma lack a cell wall and can survive without oxygen.
The correct statements are
(i) Methanogens are archaebacteria which produce methane in marshy areas.
(ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen.
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(iv) Mycoplasma lack a cell wall and can survive without oxygen.
The correct statements are
AIPMT 2010 Mains
70
Given below is the diagram of a bacteriophage.
In which one of the options all the four parts
A, B, C and D are correct?
AIPMT 2010 Mains
71
Some hyperthermophilic organisms that grow in highly acidic (pH 2) habitats belong to the two groups
AIPMT 2010 Prelims
72
Membrane-bound organelles are absent in
AIPMT 2010 Prelims
73
Virus envelope is known as
AIPMT 2010 Prelims
74
Single-celled eukaryotes are included in
AIPMT 2010 Prelims
75
One of the free-living, anaerobic nitrogen-fixer is
AIPMT 2010 Prelims
76
Oxygenic photosynthesis occurs in
AIPMT 2009
77
T.O. Diener discovered a
AIPMT 2009
78
Which of the following is a symbiotic nitrogen fixer?
AIPMT 2009
79
Which one is the wrong pairing for the disease and its causal organism?
AIPMT 2009
80
Phylogenetic system of classification is based on
AIPMT 2009
81
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements in true about archaea?
AIPMT 2008
82
Thermococcus, Methanococcus and Methanobacterium exemplify
AIPMT 2008
83
Bacterial leaf blight of rice is caused by a species
AIPMT 2008
84
Which one of the following statements about mycoplasma is wrong?
AIPMT 2007
85
Which one of the following is a slime mould?
AIPMT 2007
86
Which pair of the following belongs to basidiomycetes?
AIPMT 2007
87
Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?
A. Temperature of about 25o C
B. Temperature of about 5o C
C. Relative humidity of about 5%
D. Relative humidity of about 95%
E. A shady place
F. A brightly illuminated place
Choose the answer from the following options.
A. Temperature of about 25o C
B. Temperature of about 5o C
C. Relative humidity of about 5%
D. Relative humidity of about 95%
E. A shady place
F. A brightly illuminated place
Choose the answer from the following options.
AIPMT 2006
88
Curing of tea leaves is brought about by the activity of
AIPMT 2006
89
There exists a close association between the alga and the fungus within a lichen. The fungus
AIPMT 2005
90
Basophilic prokaryotes
AIPMT 2005
91
For retting of jute the fermenting microbe used is
AIPMT 2005
92
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia
AIPMT 2005
93
Phenetic classification of organisms is based on
AIPMT 2004
94
Which of the following statements is not true for retroviruses?
AIPMT 2004
95
Viruses that infect bacteria multiply and cause their lysis, are called
AIPMT 2004
96
A free living nitrogen-fixing cyanobacterium which can also symbiotic association with the water ferm Azolla is
AIPMT 2004
97
During replication of a bacterial chromosome DNA synthesis starts from a replication origin site and
AIPMT 2004
98
Lichens are well known combination of an alga and a fungus where fungus has
AIPMT 2004
99
In which kingdom would you classify the archaea and nitrogen-fixing organisms, if the five-kingdom system of classification is used?
AIPMT 2003
100
Viruses are no more ''alive'' than isolated chromosomes because
AIPMT 2003
101
Which one of the following statements about viruses is correct?
AIPMT 2003
102
Tobacco mosaic virus is a tubular filament of size
AIPMT 2003
103
Chromosomes in a bactertial cell can be 1 $$-$$ 3 in number and
AIPMT 2003
104
Phenetic classification of organisms is based on
AIPMT 2003
105
Which of the following secretes toxins during storage conditions of crop plants?
AIPMT 2002
106
The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph?
AIPMT 2002
107
Which statement is correct for bacterial transduction?
AIPMT 2002
108
In five kingdom system, the main basis of classification is
AIPMT 2002
109
Choose the correct sequence of stages of growth curve for bacteria.
AIPMT 2002
110
Which fungal disease spreads by seed and flowers?
AIPMT 2002
111
In bacteria, plasmid is
AIPMT 2002
112
Some bacteria are able to grow in streptomycin containing medium due to
AIPMT 2002
113
Adhesive pad of fungi penetrate the host with the help of
AIPMT 2001
114
What is true for archaebacteria?
AIPMT 2001
115
Difference in gram positive and gram negative bacteria is due to
AIPMT 2001
116
What is true for cyanobacteria ?
AIPMT 2001
117
Cauliflower mosaic virus conrains
AIPMT 2001
118
Black rust of wheat is caused by
AIPMT 2000