Biological Classification: NEET MCQ Questions [100+ Solved]

In this post, I have mentioned NEET MCQ questions on the Class 11 Biology Chapter “Biological Classification”. 120 important MCQs are given in this NEET question bank. Solve the below free NEET mock test for a better understanding of the various topics.

Biological Classification is the second chapter in the unit ‘Diversity in the Living World’ of class XI or class 11th Biology NCERT. Do note that NEET (which is conducted by NTA) is based on NCERT books so they are a must have. You can download the NCERT textbooks (pdf) here (official website).


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Important Questions For NEET:

You can also answer the below NEET quiz in a sheet of paper. Once you’re done with the NEET online test series, cross verify and calculate your score and judge your performance based on the scored marks. To calculate your score, multiply 4 with the number of correct attempts and then subtract that with the number of incorrect or wrong attempts.

I hope this will help you practice better for the NEET exam! All the best!

1. Which of the following are likely to be present in deep seawater?
(a) Eubacteria
(b) Blue-green algae
(c) Saprophytic fungi
(d) Archaebacteria

(d) Archaebacteria
Archaebacteria can survive in harsh conditions due to the presence of a branched lipid chain in the cell membrane that reduces the fluidity of the cell membrane. It includes halophiles which are exclusively found in saline habitats.


2. Which one of the following is true for fungi?
(a) They are phagotrophic
(b) They lack a rigid cell wall
(c) They are heterotrophs
(d) They lack a nuclear membrane

(c) They are heterotrophs
Fungi lack chlorophyll, hence, they do not prepare their food by photosynthesis. They can grow where organic material is available. So, they are heterotrophs that acquire their nutrient by absorption and store in the form of glycogen.


3. Specialized cells for fixing atmospheric nitrogen in Nostoc are
(a) Akinetes
(b) Heterocysts
(c) Hormogonia
(d) Nodules

(b) Heterocysts
Heterocysts are large-sized, thick-walled specialized cells that occur in a terminal, intercalary or lateral position in filamentous cyanobacteria, example, Nostoc. They have enzyme nitrogenase and are specialized to perform biological nitrogen fixation.


4. Satellite RNAs are present in some
(a) Plant viruses
(b) Viroids
(c) Prions
(d) Bacteriophages

(a) Plant viruses
Plant viruses often contain parasites of their own, referred to as satellites. Satellite RNAs are dependent on their associated (helper) virus for both replication and encapsidation.
Example:
Tobacco Necrosis Virus (TNV).
Viroids are infectious agents smaller than viruses.
Bacteriophages are viruses that infect bacteria.
A prion is an infectious agent that is composed primarily of protein.


5. Five kingdom system of classification suggested by R.H. Whittaker is NOT based on:
(a) Presence or absence of a well-defined nucleus
(b) Mode of reproduction
(c) Mode of nutrition
(d) Complexity of body organization

(a) Presence or absence of a well-defined nucleus
Five kingdom system of classification was proposed by R.H. Whittaker (1969). The five-kingdom classification is based on the following criteria:
The complexity of cell structure – Prokaryotes or Eukaryotes
The complexity of organisms body – Unicellular or Multicellular
Mode of obtaining nutrition – Autotrophic or Heterotrophic
Phylogenetic relationships


6. Which one of the following fungi contains hallucinogens?
(a) Morchella esculenta
(b) Amanita muscaria
(c) Neurospora sp.
(d) Ustilago sp.

(b) Amanita muscaria
Several mushrooms such as Amanita muscaria, Psilocybe mexicana, and Panaeolus spp. secrete hallucinogenic substances like psilocybin and psilocin. These substances may destroy brain cells and power perception in human beings.


7. Archaebacteria differ from eubacteria in:
(a) Cell membrane
(b) Mode of nutrition
(c) Cell shape
(d) Mode of reproduction

(c) Cell shape
Archaebacteria differ from other bacteria in having a different cell wall structure. They lack peptidoglycan in the cell wall and possess a monolayer of branched fatty acids attached to glycerol by ether bonds in their cell membranes.


8. Which of the following shows coiled RNA strand and capsomeres?
(a) Poliovirus
(b) Tobacco mosaic virus
(c) Measles virus
(d) Retrovirus

(b) Tobacco mosaic virus
TMV (Tobacco Mosaic Virus) is a rod-shaped virus. The rod has a core that contains helically coiled single-stranded RNA. There is a protective covering of protein called capsid around the infective part. The capsid consists of small subunits called capsomeres and has antigenic property.


9. Viruses have:
(a) DNA enclosed in a protein coat
(b) Prokaryotic nucleus
(c) Single chromosome
(d) Both DNA and RNA

(a) DNA enclosed in a protein coat
All viruses are nucleoproteins (Nucleic acid + Protein) in the structure. In a virus, either DNA or RNA is the genetic material. Both are never present in a virus.
A virus envelope is known as a capsid. The capsid is composed of protein subunits called capsomere.


10. The motile bacteria can move by:
(a) Fimbriae
(b) Flagella
(c) Cilia
(d) Pili

(b) Flagella
Motile bacteria have thin filamentous extensions on their cell wall called flagella.


11. Which one of the following matches is correct?
(a) Alternaria Sexual Deuteromycetes reproduction absent
(b) Mucor Reproduction Ascomycetes by Conjugation
(c) Agaricus Parasitic fungus Basidiomycetes
(d) Phytophthora Aseptate Basidiomycetes mycelium

(a) Alternaria Sexual Deuteromycetes reproduction absent
Alternaria belongs to the class – Deuteromycetes, which lack sexual reproduction. Asexual reproduction takes place by conidia produced on conidiophores.


12. True nucleus is absent in:
(a) Mucor
(b) Vaucheria
(c) Volvox
(d) Anabaena

(d) Anabaena
Anabaena is cyanobacteria that lack a true nucleus because of the absence of a nuclear membrane.


13. Which of the following structures is not found in a prokaryotic cell?
(a) Ribosome
(b) Mesosome
(c) Plasma membrane
(d) Nuclear envelope

(d) Nuclear envelope
A nuclear envelope is not found in a prokaryotic cell.


14. The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:
(a) Basidiomycetes
(b) Phycomycetes
(c) Ascomycetes
(d) Deuteromycetes

(d) Deuteromycetes
Class Deuteromycetes comprises imperfect fungi which play role in the decomposition of organic wastes


15. The structures that help some bacteria to attach to rocks and /or host tissues are:
(a) Fimbriae
(b) Mesosomes
(c) Holdfast
(d) Rhizoids

(a) Fimbriae
Fimbriae assist some bacteria in attaching to rocks or host body for obtaining establishment and nutrition.


16. Pick the wrong statement
(a) Protista have photosynthetic and heterotrophic modes of nutrition
(b) Some fungi are edible
(c) Nuclear membrane is present Monera
(d) Cell wall is absent in Animalia

(c) Nuclear membrane is present Monera
The kingdom Monera possesses unicellular organisms (example – bacteria) having no nuclear membrane.


17. In which group of organisms the cell walls form two thin overlapping shells which fit together?
(a) Euglenoids
(b) Dinoflagellates
(c) Slime moulds
(d) Chrysophytes

(d) Chrysophytes
In chrysophytes, the cell walls form two thin overlapping shells held together. The body of Diatoms appears like a soapbox due to overlapping shells.


18. Choose the wrong statement:
(a) Neurospora is used in the study of biochemical genetics
(b) Morels and truffles are poisonous mushrooms
(c) Yeast is unicellular and useful in fermentation
(d) Penicillium is multicellular and produces antibiotics

(b) Morels and truffles are poisonous mushrooms
Morel and truffles are used as food and they are members of Ascomycetes fungi.


19. Which of the following are the most suitable indicators of SO2 pollution in the environment?
(a) Conifers
(b) Algae
(c) Fungi
(d) Lichens

(d) Lichens
Lichens cannot grow in places where sulphur dioxide is present in the environment.


20. Which of the following statements is wrong for viroids?
(a) They lack a protein coat
(b) They are smaller than viruses
(c) They cause infections
(d) Their RNA is of high molecular weight

(d) Their RNA is of high molecular weight
Viroids, the smallest known pathogens, are naked, circular, single-stranded RNA molecules that do not encode a protein but autonomously replicate when introduced into host plants. Viroids only infect plants; some cause economically important diseases of crop plants, while others appear to be benign.


21. One of the major components of the cell wall of most fungi is
(a) Chitin
(b) Peptidoglycan
(c) Cellulose
(d) Hemicellulose

(a) Chitin
A cell wall is a rigid structural layer, which provides protection and structural support to the cells. The composition of the cell wall varies from one species to another. In fungi, the cell wall is composed of strong covalent linkages of chitin, glucans, and glycoproteins.
Alternatively, in the case of land plants, the cell wall is composed of cellulose and hemicellulose. Archean cell walls consist of peptidoglycans.


22. Which one of the following statements is wrong?
(a) Cyanobacteria are also called blue-green algae
(b) Golden algae are also called desmids
(c) Eubacteria are also called false bacteria
(d) Phycomycetes are also called algal fungi

(c) Eubacteria are also called false bacteria
Eubacteria are the true bacteria.


23. Chrysophytes, Euglenoids, Dinoflagellates, and Slime moulds are included in the kingdom
(a) Monera
(b) Protista
(c) Fungi
(d) Animalia

(b) Protista
All unicellular eukaryotic organisms like diatoms, desmids (chrysophytes), euglenoids, dinoflagellates, and slime mould are included in Protista.


24. Which of the following are found in extreme saline conditions?
(a) Eubacteria
(b) Cyanobacteria
(c) Mycobacteria
(d) Archaebacteria

(d) Archaebacteria
Archaebacteria are able to survive in harsh conditions due to the presence of a branched lipid chain in the cell membrane that reduces the fluidity of the cell membrane. It includes halophiles which are exclusively found in saline habitats.


25. Which of the following components provides a sticky character to the bacterial cell?
(a) Nuclear membrane
(b) Plasma membrane
(c) Glycocalyx
(d) Cell wall

(c) Glycocalyx
The sticky character of the bacterial wall is due to glycocalyx which is rich in glycoproteins.


26. Viroids differ from viruses in having;
(a) DNA molecules without a protein coat
(b) RNA molecules with a protein coat
(c) RNA molecules without a protein coat
(d) DNA molecules with a protein coat

(c) RNA molecules without a protein coat
Viroids in nature are sub-viral agents as infectious RNA particles, without a protein coat.


27. 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?
(a) Pseudomonas
(b) Mycoplasma
(c) Nostoc
(d) Bacillus

(b) Mycoplasma
Mycoplasmas are the smallest, prokaryotes lacking cell walls and are pleomorphic in nature. These are pathogenic to both plants and animals.


28. All eukaryotic unicellular organisms belong to
(a) Monera
(b) Protista
(c) Fungi
(d) Bacteria

(b) Protista
Protista is a group comprising all unicellular eukaryotic plants and animals. The organisms included in this group are either photoautotrophs, heterotrophs or parasites.
Monera includes prokaryotic organisms like bacteria, unicellular organisms.
Fungi are eukaryotic but are mostly multicellular (yeast is unicellular).


29. The five-kingdom classification was proposed by
(a) R.H. Whittaker
(b) C. Linnaeus
(c) A Roxberg
d) Virchow

(a) R.H. Whittaker
R.H. Whittaker (1969), an American taxonomist divided organisms into five kingdoms, in order to develop phylogenetic classification:
(i) Monera
(ii) Protista
(iii) Fungi
(iv) Plantae
(v) Animalia
C Linnaeus developed two-kingdom classification.
(i) Kingdom-Plantae
(ii) Kingdom-Animalia
and Virchow is associated with the discovery of cell theory


30. Organisms living in salty areas are called as
(a) methanogens
(b) halophiles
(c) heliophytes
(d) thermoacidophiles

(b) halophiles
Halophiles are organisms inhabiting areas with a high concentration of salts. The name halophiles mean ‘salt loving’.
Heliophytes are the plants that grow best in sunlight and can not survive in dark conditions.
Methanogens are the bacteria that produce methane as a metabolic byproduct under anaerobic conditions.
Thermoacidophiles are archaebacteria able to survive under strong acidic environments and high temperatures, but cannot tolerate high salt concentrations around them.


31. Naked cytoplasm, multinucleated and saprophytic are the characteristics of
(a) Monera
(b) Protista
(c) Fungi
(d) Slime molds

(d) Slime molds
Slime molds are saprophytic protists, that move along the dead leaves engulfing organic matter. These are multinucleated with no cell wall and have naked cytoplasm.
Monerans are prokaryotes, comprised of all bacteria.
Protists are a group of eukaryotic organisms, that bears a well-defined membrane around the cytoplasm, may be uninucleate or multinucleated. Their cell has a well-developed cell wall made of chitin.


32. An association between roots of higher plants and fungi is called
(a) lichen
(b) fern
(c) Slime molds
(d) BGA

(c) Slime moulds
Mycorrhiza is a symbiotic association of a fungus with the roots of higher plants like gymnosperms and angiosperms.
The fungus is dependent on plants for food and shelter, while the plants are benefitted from the fungal hyphae as they help in the absorption of water and dissolved minerals present in the soil debris and make it available to the plants.
Whereas lichens are the symbiotic association between algae and fungi. Ferns are a group of plants, belonging to pteridophytes like other vascular plants and BGA is blue-green algae with a prokaryotic cell.


33. A dikaryon is formed when
(a) meiosis is arrested
(b) the two haploid cells do not fuse immediately
(c) cytoplasm does not fuse
(d) None of the above

(b) the two haploid cells do not fuse immediately
Dikaryon is a cell with two nuclei. This results when two somatic cells fuse but their nucleus do not fuse immediately. Meiosis does not result in such conditions.


34. Contagium vivum fluidum was proposed by
(a) D.J. Ivanowsky
(b) M.W. Beijernek
(c) Stanley
(d) Robert Hook

(b) M.W. Beijernek
M.W. Beijerinck proposed contagium vivum fluidum which means contagious living fluid. This phrase was first used to describe the virus, characteristic in escaping from the finest mesh available.
D.J. Ivanowsky was a Russian botanist who discovered the filterable nature of viruses and is one of the founders of virology.
Stanley Miller was a Jewish American chemist who experimented on the origin of life on the primitive earth. Robert Hooke was the first to study and visualize cells using his primitive microscope.


35. Association between mycobiont and phycobiont are found in
(a) mycorrhiza
(b) root
(c) lichens
(d) BGA

(c) lichens
Lichens are organisms comprised of a permanent symbiotic association of a fungus and an alga. The fungal partner is called mycobiont and the algal partner is called phycobiont.
Mycorrhiza is an association of a fungus with the roots of higher plants, but not with algae, while BGA is blue-green algae, a member of Monera with a prokaryotic cell structure.


36. The difference between virus and viroid is
(a) absence of protein coat in viroid, but present in the virus.
(b) presence of low molecular weight RNA in virus, but absent in viroid
(c) Both (a) and (b)
(d)None of the above

(a) absence of protein coat in viroid, but present in the virus
Viruses contain DNA or RNA as the genetic material and a protein coat, whereas viroids have no protein coat, but the only RNA as their nucleic acid. This is the reason why viroids are carried inside viruses. example, hepatitis D is a viroid carried inside the capsid of the hepatitis B virus.


37. With respect to the fungal sexual cycle, choose the correct sequence of events.
(a) Karyogamy, Plasmogamy, and Meiosis
(b) Meiosis, Plasmogamy, and Karyogamy
(c) Plasmogamy, Karyogamy, and Meiosis
(d) Meiosis, Karyogamy, and Plasmogamy

(c) Plasmogamy, Karyogamy, and Meiosis
Plasmogamy means fusion of protoplasm while karyogamy means fusion of nucleus. These two events lead to the formation of a zygote (2n) which is a diploid structure where meiosis occurs.


38. Viruses are non-cellular organisms, but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong?
(a) Monera
(b) Protista
(c) Fungi
(d) None of these

(d) None of these
In the five-kingdom classification proposed by Whittaker, non-cellular organisms like viruses and viroids are not included. Viruses were not placed in the classification since they are not truly ‘living’ and hence, they are considered as non-cellular.


39. Members of Phycomycetes are found in
(i) Aquatic habitats
(ii) On decaying wood
(iii) Moist and damp places
(iv) As obligate parasites on plants
Choose from the following options:

(a) (i) and (iv)
(b) (ii) and (iii)
(c) None of these
(d) All of these

(d) All of these
Phycomycetes are fungi that can thrive on dead and decaying wood as saprophytes. These prefer to live in moist and damp places and need water for the movement of zoospore and sexual gametes.
Few members of Phycomycetes are obligate parasites like Phytophthora infestans that causes late blight of potato and Peronospora viticola causing downy mildew of grapes.


40. Two kingdom classification was given by
(a) Whittaker
(b) Aristotle
(c) Linnaeus
(d) Darwin

(c) Linnaeus


41. Cyanobacteria belong to the kingdom
(a) Protista
(b) fungi
(c) Plantae
(d) monera

(d) monera


42. The bacteria that can survive in extreme salty areas are called
(a) archaebacteria
(b) methanogens
(c) eubacteria
(d) halophiles

(d) halophiles


43. Heterocyst is found in
(a) Nostoc
(b) chrysophytes
(c) slime moulds
(d) dinoflagellates

(a) Nostoc


44. ‘Diatoms’ the chief producers in the oceans belong to the group
(a) chrysophytes
(b) dinoflagellates
(c) euglenoids
(d) slime moulds

(a) chrysophytes


45. Bacteria have been put in the kingdom Monera because they are
(a) unicellular
(b) prokaryotes
(c) microscopic
(d) decomposers

(b) prokaryotes


46. Archaebacteria are considered to be ancient bacteria because they are
(a) autotrophs
(b) heterotrophs
(c) able to survive in extreme conditions
(d) unicellular

(c) able to survive in extreme conditions


47. The five-kingdom classification was given by
(a) Linnaeus
(b) Whittaker
(c) Leeuwenhoek
(d) John Ray

(b) Whittaker


48 Euglena belongs to the kingdom
(a) monera
(b) Protista
(c) Plantae
(d) Animalia

(b) Protista


49. Ferns are
(a) unicellular prokaryotes
(b) unicellular eukaryotes
(c) multicellular prokaryotes
(d) multicellular eukaryotes

(d) multicellular eukaryotes


50. The mode of nutrition in Kingdom Fungi is mainly
(a) autotrophic
(b) heterotrophic
(c)saprophytic
(d) parasitic

(c) saprophytic


51. Viruses have
(a) DNA enclosed in a protein coat
(b) prokaryotic nucleus
(c) DNA enclosed in a nuclear membrane
(d) membrane attached DNA

(a) DNA enclosed in a protein coat


52. The smallest living organism is/are
(a) Amoeba
(b) yeast
(c) blue-green algae
(d) red or brown algae

(c) blue-green algae


53. The holozoic kind of nutrition is found in
(a) protozoans
(b) phytoplanktons
(c) cyanobacteria
(d) fungi

(a) protozoans


54. The multicellular decomposers belong to the kingdom
(a) monera
(b) Protista
(c) fungi
(d) Plantae

(c) fungi


55. Lichens are produced by
(a) soredia
(b) conidia
(c) zoospores
(d) zygospores

(a) soredia


56. Statement 1: Linnaeus classified plants into trees, shrubs, and herbs, on the basis of morphological characters.
Statement 2: Aristotle divided animals into 2 groups – Anaima and Enaima.

(a) Only statement 1 is correct
(b) Only statement 2 is correct
(c) Both statement 1 and statement 2 are correct
(d) Both statement 1 and statement 2 are incorrect

(b) Only statement 2 is correct


57. Which of the following characteristic(s) is/are used by Whittaker for the classification of organisms?
(a) Mode of nutrition
(b) Thallus organisation
(c) Phylogenetic relationships
(d) All of the above

(d) All of the above


58. Select correct match w.r.t. Whittaker’ system of classification
(a) Monera: Unicellular, osmotrophs, producers and decomposers, true cellulosic cell wall
(b) Protista: Unicellular, eukaryotic, photoautotrophs, and chemoautotrophs
(c) Fungi: Multicellular/loose tissue, eukaryotic, osmotrophs, chitinous wall
(d) Animalia: Multicellular, eukaryotic, organ or organ system, holozoic, no saprobic

(c) Fungi: Multicellular/loose tissue, eukaryotic, osmotrophs, chitinous wall


59. Organisms of which of the following kingdom do not have nuclear membrane?
(a) Protista
(b) Fungi
(c) Monera
(d) Plantae

(c) Monera


60. Protists are
(a) single-celled eukaryotes
(b) multicellular eukaryotes
(c) single-celled prokaryotes
(d) single-celled akaryote

(a) single-celled eukaryotes


61. Bacteria are considered primitive organisms because they
(a) Possess incipient nucleus
(b) Are small, microscopic plants, which are not seen by the naked eyes
(c) Cause serious diseases to the human being, domesticated animals, and crop plants
(d) Produce endospores that are very resistant to adverse conditions

(a) Possess incipient nucleus


62. Which of the following pigments is present in cyanobacteria?
(a) Chlorophyll ‘a’
(b) Chlorophyll ‘b’
(c) Chlorophyll ‘c’
(d) Chlorophyll ‘d’

(a) Chlorophyll ‘a’


63. 70S ribosomes, chromatophores, and circular DNA are found in
(a) All eukaryotes
(b) All prokaryotes
(c) Some prokaryotes
(d) Some eukaryotes and some prokaryotes

(c) Some prokaryotes


64. Which of the following is the smallest living cell and can live without oxygen?
(a) Mycoplasma
(b) Mycorrhiza
(c) Euglena
(d) Trypanosoma

(a) Mycoplasma


65. There is no alternation of generation in Escherichia coli because of the absence of
(a) Syngamy
(b) Reduction division
(c) Conjugation
(d) Both (1) & (2)

(d) Both (1) & (2)


66. Which of the following processes are involved in the reproduction of protists?
(a) Binary fission and budding
(b) Cell fusion and zygote formation
(c) Spore formation and cyst formation
(d) All of the above

(d) All of the above


67. Branched-chain lipids occur in the cell membranes of
(a) Methanobacterium
(b) Mycoplasma
(c) Actinomycetes
(d) Streptomyces

(a) Methanobacterium


68. Which of the following pairs come under the group chrysophytes?
(a) Diatoms and Euglena
(b) Euglena and Trypanosoma
(c) Diatoms and Desmids
(d) Gonyaulax and Desmids

(c) Diatoms and Desmids


69. Cyanobacteria do not possess
(a) Gene recombinations
(b) Flagella
(c) Plasmids
(d) Pigments

(b) Flagella


70. Which of the following is an example of amoeboid protozoans?
(a) Trypanosoma
(b) Paramecium
(c) Gonyaulax
(d) Entamoeba

(d) Entamoeba


71. The bacterial cell divides every one minute. It takes 15 minutes for a cup to be one-fourth full. How much time will it take to fill the cup?
(a) 30 minutes
(b) 45 minutes
(c) 60 minutes
(d) 17 minutes

(d) 17 minutes


72. Which of the following are parasitic fungi on the mustard plant?
(a) Albugo
(b) Puccinia
(c) Yeast
(d) Ustilago

(a) Albugo


73. The highly resistant nature of endospore is due to the presence of
(a) Dipicolinic acid and peptidoglycan in spore coat
(b) Peptidoglycan in exosporium
(c) Dipicolinic acid and Ca in cortex
(d) Dipicolinic acid and Ca in cell membrane

(c) Dipicolinic acid and Ca in cortex


74. Which of the following is used extensively in biochemical and genetic work?
(a) Agaricus
(b) Alternaria
(c) Neurospora
(d) Mucor

(c) Neurospora


75. Endospores formed by certain bacteria are actually the means for
(a) Reproduction
(b) Perennation
(c) Bioluminescence
(d) Red snow formation

(b) Perennation


76. Which of the following is/are example(s) of Deuteromycetes?
(a) Alternaria
(b) Colletotrichum
(c) Trichoderma
(d) All of these

(d) All of these


77. Which group of fungi is commonly known as imperfect fungi?
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Deuteromycetes

(d) Deuteromycetes


78. Seawater glows during the night mainly due to the occurrence of
(a) Gonyaulax
(b) Noctiluca
(c) Euglena
(d) Cyclotella

(b) Noctiluca


79. Bladderwort and Venus flytrap are examples of
(a) insectivorous plants
(b) parasitic plants
(c) N2 – rich plants
(d) aquatic plants

(a) insectivorous plants


80. Rejuvenescent spore of diatom is
(a) Haploid and exospore
(b) Diploid and statospore
(c) Haploid and statospore
(d) Diploid and auxospore

(d) Diploid and auxospore


81. The subunit of the capsid is called
(a) core
(b) nucleotide
(c) amino acid
(d) capsomere

(d) capsomere


82. Leucosin (Chrysolaminarin) is a carbohydrate that is stored as reserve food in case of
(a) Diatom
(b) Euglena
(c) Dinoflagellates
(d) Paramoecium

(a) Diatom


83. Which of the following is not a viral disease?
(a) AIDS and mumps
(b) Smallpox and herpes
(c) Influenza
(d) Cholera

(d) Cholera


84. Flagellation in Euglena is
(a) Uniflagellation and stichonematic
(b) Isokont and whiplash type
(c) Heterokont and whiplash type
(d) Heterokont and stichonematic

(d) Heterokont and stichonematic


85. The symbiotic association between fungi and algae is called
(a) lichen
(b) mycorrhiza
(c) rhizome
(d) endomycorrhiza

(a) lichen


86. The special type of red pigment present in the eye-spot of Euglena and Crustacea is called
(a) Phycoerythrin
(b) Astaxanthin
(c) Carotene
(d) Xanthophyll

(b) Astaxanthin


87. The genetic material of the virus includes
(a) only RNA.
(b) only DNA.
(c) RNA and DNA both
(d) RNA or DNA, i.e., one nucleic acid in a virus.

(d) RNA or DNA, i.e., one nucleic acid in a virus.


88. Paraflagellar body of Euglena helps in
(a) Locomotion
(b) Photoreception
(c) Reproduction
(d) Osmoregulation

(b) Photoreception


89. Dikaryon formation is the characteristic feature of
(a) ascomycetes and basidiomycetes.
(b) phycomycetes and basidiomycetes.
(c) ascomycetes and Phycomycetes.
(d) phycomycetes and zygomycetes.

(a) ascomycetes and basidiomycetes.


90. The structure formed in the life cycle of cellular slime mould due to chemotactic movement is
(a) Pseudoplasmodium
(b) Swarm cells
(c) Macrocyst
(d) Capillitia

(a) Pseudoplasmodium


91. The clamp connection is found in
(a) basidiomycetes
(b) ascomycetes
(c) saccharomycetes
(d) haplomycetes

(a) basidiomycetes


92. Myxamoeba are formed in the life cycle of
(a) Physarum
(b) Amoeba
(c) Entamoeba
(d) Diatoms

(a) Physarum


93. Plasmogamy is the fusion of
(a) two haploid cells including their nuclei.
(b) two haploid cells without nuclear fusion.
(c) sperm and egg.
(d) sperm and two polar nuclei.

(b) two haploid cells without nuclear fusion.


94. The difference between a red sea and red tide is
(a) Red tide takes place in the red sea
(b) Associated with cyanobacteria and protist respectively
(c) One is by virus and the other by bacteria
(d) Associated with Rhodophyceae and diatoms respectively

(b) Associated with cyanobacteria and protist respectively


95. Which scientist classified plants into trees, shrubs, and herbs and animals into two groups based on the absence or presence of red blood cells?
(a) Aristotle
(b) R. H. Whittaker
(c) D. J. Ivanowsky
(d) W. M. Stanley

(a) Aristotle


96. Consider the following statements and select the correct set of features with respect to the life cycle of acellular slime moulds

  1. Haploid vegetative stage as myxamoebae
  2. Diploid vegetative stage as plasmodium
  3. Capillitium
  4. Photosynthetic protists
  5. Sporic meiosis
  6. Isogamous sexual reproduction
  7. Anisogamous sexual reproduction with zygotic meiosis
    (a) a, c, g
    (b) b, c, g
    (c) b, d, e, f
    (d) b, c, e, f

(d) b, c, e, f


97. Fungi are filamentous with the exception of “X” which is unicellular. Identify X.
(a) Yeast
(b) Albugo
(c) Mucor
(d) Lichen

(a) Yeast


98. Find the correct match
Column I Column II

  1. Gill fungi (i) Salmon disease
  2. Cup fungi (ii) Trama
  3. Black mould (iii) Penicillin
  4. Blue/green (iv) Zygophore
    (v) Apothecium
    (a) a(ii), b(iii), c(i), d(v)
    (b) a(ii), b(v), c(iv), d(i)
    (c) a(ii), b(v), c(iv), d(iii)
    (d) a(ii), b(iii), c(i), d(iv)

(c) a(ii), b(v), c(iv), d(iii)


99. The bacteria which oxidize various inorganic substances and use the released energy for the synthesis of food are called
(a) Archaebacteria
(b) Heterotrophic bacteria
(c) Photosynthetic autotrophic bacteria
(d) Chemosynthetic autotrophic bacteria

(d) Chemosynthetic autotrophic bacteria


100. Select incorrectly matched pair
(a) Mucor mucedo – Coprophilous
(b) Albugo candida – Facultative parasite
(c) Agaricus bisporus – Edible basidiocarp
(d) Puccinia graminis – Black rust fungi

(b) Albugo candida – Facultative parasite


101. Which of the following statements is not correct for viruses?
(a) Viruses are obligate parasites.
(b) Viruses can multiply only when they are inside the living cells.
(c) Viruses cannot pass through bacterial filters.
(d) Viruses are made up of protein and DNA or RNA (never both DNA and RNA).

(c) Viruses cannot pass through bacterial filters.


102. Fungi differ from bacteria in
(d) Mode of nutrition
(c) Having NAG in cell wall
(b) Flagella structure
(a) Reserve food material as glycogen

(c) Having NAG in cell wall


103. Which of the following statements is correct for archaea?
(a) Archaea resemble eukaryotes in all respects.
(b) Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
(c) Archaea completely differ from both prokaryotes and eukaryotes.
(d) Archaea completely differ from prokaryotes.

(b) Archaea have some novel features that are absent in other prokaryotes and eukaryotes.


104. The fruiting body in Aspergillus (or Penicillium) is known as
(a) Cleistothecium
(b) Apothecium
(c) Perithecium
(d) Ascus

(a) Cleistothecium


105. Which of the following statements is not correct for methanogens?
(a) They are archaebacteria.
(b) They live in marshy areas.
(c) Methane is their preferred carbon source.
(d) They are present in the guts of several ruminant animals (cow, buffaloes) and produce biogas (CH4) from the dung of these animals.

(c) Methane is their preferred carbon source.


106. The famous Irish famine is related to a disease of potato known as
(a) Late blight of potato
(b) Early blight of potato
(c) Dry rot of potato
(d) Potato scab

(a) Late blight of potato


107. Which of the following statements is correct for both blue-green algae and bacteria?
(a) Both show anaerobic respiration.
(b) Both have chlorophyll pigment.
(c) Both are devoid of a true nucleus.
(d) None of the above

(c) Both are devoid of a true nucleus.


108. A dolipore septum is a characteristic feature of
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Zygomycetes

(c) Basidiomycetes


109. Which of the following statements is incorrect?

(a) TMV has a double-stranded RNA molecule.
(b) Most plant viruses are RNA viruses.
(c) The bacteriophage has double-stranded DNA.
(d) Most animal viruses are DNA viruses.

(a) TMV has a double-stranded RNA molecule.


110. Which one of the following combinations of characters is correct for the given fungal group?
(a) Algal fungi: Coenocytic, cellulosic wall, zoospore, zygospore, dikaryophase present
(b) Conjugating: Septate mycelium, chitinous cell wall, sporangiospores, shorter (n + n) phase
(c) Sac fungi : Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase
(d) Club fungi: Shorter primary mycelium stage, No sex organs, dominant dikaryophase, zygosporic meiosis

(c) Sac fungi: Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase


111. Which of the following statements is/are correct for bacteria?
(a) They are the members of the kingdom monera.
(b) They live in extreme habitats such as hot springs, deserts, snow, and deep oceans.
(c) They show the most extensive metabolic diversity.
(d) All of the above

(d) All of the above


112. Find a set of edible basidiocarps.
(a) Agaricus, Pleurotus
(b) Agaricus, Morchella
(c) Volvariella, Tuber
(d) Amanita, Morchella

(a) Agaricus, Pleurotus


113. Which of the following statements is a characteristic feature of chrysophytes?
(a) They are parasitic forms that cause diseases in animals.
(b) They have a protein-rich layer called the pellicle.
(c) They have an indestructible cell wall layer deposited with silica.
(d) They are commonly called dinoflagellates.

(c) They have an indestructible cell wall layer deposited with silica.


114. Read the statements carefully
a. Hartig net is the network of intracellular mycelium of Boletus
b. Ectomycorrhiza forms ten percent of total mycorrhiza
c. Fungal partner of endomycorrhiza belongs to zygomycetes or Phycomycetes

(1) Only a & c are correct
(2) Only b & c are correct
(3) Only c is correct
(4) All are correct

(2) Only b & c are correct


115. Which of the following statements is correct for dinoflagellates flagella?
(a) A single flagellum lies in the transverse groove between the cell plates.
(b) A single flagellum lies in the longitudinal groove between the cell plates.
(c) Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.
(d) Flagella are absent.

(c) Two flagella, one lies longitudinally and the other transversely in a furrow between the wall plates.


116. A symptom not seen in plants due to viruses is
(1) Mosaic formation
(2) Leaf rolling and curling
(3) Yellowing, vein clearing
(4) Root-knot

(4) Root-knot


117. Choose the correct statements (i – v) regarding mycoplasma
(i) Mycoplasma has no cell wall.
(ii) Mycoplasma is the smallest living organism known.
(iii) Mycoplasma cannot survive without O2.
(iv) Mycoplasma is pathogenic in animals and plants.
(v) A sort of sexual reproduction occurs in a bacterium by adopting a primitive DNA transfer from one bacterium to the other.

(a) Only (iii)
(b) (i), (iii) and (v)
(c) (i), (ii), (iv), and (v)
(d) All of the above

(c) (i), (ii), (iv), and (v)


118. Viruses possess all the following properties, except
(a) They are non-cellular organisms
(b) Possess both DNA and RNA
(c) Capsid protects the nucleic acid
(d) Have inert crystalline structure outside living cells

(b) Possess both DNA and RNA



119. Read the given statements and answer the question. Identify the correct class of fungi which have all the below-given characteristics.
(i) It includes unicellular as well as multicellular fungi.
(ii) In multicellular forms, hyphae are branched and septate.
(iii) Conidiophore produces conidia (spores) exogenously in the chain.
(iv) Sexual spores are ascospores produced endogenously in the chain.
(v) Fruiting body is called ascocarp.

(a) Phycomycetes
(b) Sac fungi
(c) Club fungi
(d) Fungi imperfecti

(b) Sac fungi


120. T. O. Diener discovered a new infectious agent that was smaller than viruses and has the following characteristics:
(i) It causes potato spindle tuber disease.
(ii) It has free RNA.
(iii) Molecular weight of RNA is low.
Identify the infectious agent.

(a) Viruses
(b) Viroids
(c) Virion
(d) Mycoplasma

(b) Viroids


Other NEET Question Banks:

Class 11

Class 12

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