CBSE Questions for Class 11 Medical Biology Biological Classification Quiz 13 - MCQExams.com

An organism that decomposes dead remains is most likely to utilize which of the following modes of nutrition?
  • Parasitic
  • Saprophytic
  • Autotrophic
  • All of the above
A fungal spore
  • Contains an embryonic organism
  • Germinates directly into an organism
  • Is always windblown
  • Both (b) and (c)
Choose the correct answers from the alternatives given.
Which of the following structures are associatcd with asexual reproduction in fungi
  • Ascospores
  • Zygosporangia
  • Basidiospores
  • Conidia
Which one of the following features is not associated with Rhizopus?
  • Zoospores
  • Columella
  • Sporangiophore
  • Filamentous hyphae
Choose the correct answers from the alternatives given.
All fungi are
  • symbionts
  • heterotrophs
  • saprophytes
  • parasites
Which of the following groups consist of organisms that multiply by fragmentation?
  • Earthworm, Amoeba, fungi
  • Earthworm, fungi, bacteria
  • Fungi, filamentous algae, protonema of mosses
  • Amoeba, Hydra, bacteria
State whether the following statements are true or false.
In fungi, sex organs show evolution from simplicity to complexity
  • True
  • False
Rhizopus from single spore culture can produce zygospores.
  • True
  • False
Genus is a group of similar and related ___________.
  • Classes
  • Phyla
  • Species
  • Orders
State whether the following statements are true or false.
Members of Zygomycotina and Oomycotina are called the algal fungi because they have many common features with algae especially in the thallus structure and reproduction.
  • True
  • False
State whether the following statements are true or false.
In mushrooms sex organs are complicated structures.
  • True
  • False
Thermococcus, Methanococcus and Methanobacterium exemplify 
  • Bacteria that contain a cytoskeleton and ribosomes
  • Archaebacteria that contain protein homologous to eukaryotic core histones
  • Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
  • Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
Choose the correct answers from the alternatives given .
Which of the following living phenomenon is absent in viruses?
  • Mutation
  • Replication
  • Production of energy
  • None of these
Artificial systems of classification were based on
  • Vegetative characters
  • Androecium structure
  • All of these
  • None of these
The virus which replicates in an arthropod, the intermediate host, and then goes to its permanent host, the vertebrates, is called
  • Reovirus
  • Arbovirus
  • Papoavirus
  • Parvovirus
Read the following statements regarding methanogens and select the correct option.
(i) They are included in the group Archaebacteria.
(ii) They are responsible for the production of biogas in gobar gas plants.
(iii) They live in hot sulphur springs.
(iv) They are strictly anaerobic. 
  • Statements (i) and (ii) are correct.
  • Statements (i), (ii) and (iv) are correct.
  • Statements (ii), (iii) and (iv) are correct.
  • All statements are correct.
Coenocytic mycelium is
  • uninucleate, septate
  • multinucleate, septate
  • multinucleate, aseptate
  • both (b) and (c)
In Whittaker's five kingdom system of classification, eukaryotes are distributed among
  • Two kingdoms
  • Three kingdoms
  • Four kingdoms
  • All the five kingdoms
Which of the following statements is incorrect regarding the structure of a typical bacterial cell?
  • Cells possess naked circular DNA which is folded to form nucleoid.
  • Cells are surrounded by a peptidoglycan cell wall and a mucilaginous sheath.
  • Cells possess well developed membrane bound cell organelles.
  • Ribosomes in these cells are 70S in nature.
Fungi show asexual reproduction by all of the following kinds of spores except 
  • conidia
  • oospores
  • sporangiospore
  • zoospores
Which of the following statements is incorrect regarding the modern taxonomy?
  • It deals with biological species
  • It is based on the study of all types of variations in the species
  • Species are considered to be static
  • It has a bio-systematics concept
Match column I with column II and select the correct option from the codes given.
Column IColumn II
A. Binomial nomenclature(i) Hippocrates
B. The Darwin of the $$20^{th}$$ century(ii) Ernst Mayr
C. Father of botany(iii) Linnaeus
D. Father of medicine(iv) Theopharastus
  • A-(iii), B-(ii), C-(iv), D-(i)
  • A-(iii), B-(ii), C-(i), D-(iv)
  • A-(i), B-(ii), C-(iii), D-(iv)
  • A-(ii), B-(iii), C-(iv), D-(i)
The Kingdom Protista forms a link with which of the following kingdom?
  • Plantae
  • Fungi
  • Animalia
  • All of the above
Which of the following are kingdoms?
  • Monera
  • Protista
  • Animalae
  • All of the above
Bacteria are grouped under four categories according to their shape. Study the given figures and select the correct option regarding this. 

883401_1ccf1b5b20de4191a3f6eebd724164d9.JPG
  • A - Cocci, B - Bacilli, C - Spirilla, D - Vibrio
  • A - Spirilla, B - Bacilli, C - Vibrio, D - Cocci
  • A - Bacilli, B - Spirilla, C - Vibrio, D - Cocci
  • A - Bacilli, B - Spirilla, C - Cocci, D - Vibrio
Which one of the following is an incorrect pair?
  • Louis Pasteur - Coined the term 'virus'
  • Beijerinck - Contagium vivum fluidum
  • lvanowsky - Discovered retroviruses
  • Stanley - Crystallised TMV
Select the incorrect statement.
  • Most plant viruses are RNA viruses.
  • Bacteriophages possess dsDNA.
  • Virus having an arthropod as vector is called as arbovirus.
  • Prions possess only nucleoid and no proteins.
Who crystallised and isolated viruses for the first time?
  • W.M. Stanley
  • K.M. Smith
  • D. Ivanowski
  • F.C. Bawden
Select the mismatched pair.
  • W.M. Stanley - Viruses could be crystallised
  • Meselson and Stahl - Coined term virus
  • M.W. Beijerinck - Extract of the infected plants of tobacco cause infection in healthy plants
  • All of these
Dikaryophase is a specific characteristic of
  • all Fungi
  • Phycomycetes and Ascomycetes
  • Basidiomycetes and Deuteromycetes
  • Ascomycetes and Basidiomycetes
Read the given statements about lichens and select the incorrect ones.

(i) They represent an example of commensalism.
(ii) Algal partner obtains water and mineral salts from the fungus and the fungal partner obtains food prepared by the alga.
(iii) These do not grow in polluted areas.
(iv) The mycobiont is usually an ascomycetes or a basidiomycetes.
(v) The phycobiont is mostly a green alga or a cyanobacterium.
(vi) These constitute the pioneer community in the case of hydrosere.
  • (i) and (ii)
  • (v) and (vi)
  • (i) and (vi)
  • (i), (v) and (vi)
Sexual reproduction in fungi occurs by all of the following except:
  • Basidiospores
  • Ascospores
  • Zoospores
  • Ooospores
Virion is
  • Nucleic acid of virus
  • Antiviral agent
  • Protein of virus
  • Completely assembled virus outside host
Select the option that correctly identifies the different genera (A, B, C and D) of Kingdom Fungi shown in figure.

883542_b99f7deb9f6e4a5eaf45e14589b7deb7.JPG
  • A - Mucor, B - Saccharomyces, C - Morchedia, D - Amanita
  • A - Mucor, B - Saccharomyces, C - Penicillium, D - Agaricus
  • A - Rhizopus, B - Sacchaormyces, C - Asperillius, D - Morchella
  • A - Aspergillus, B - Rhizopus, C - Penicillium, D - Agaricus
In Penicillium, the asexual reproduction takes place by
  • ascospores
  • aplanospores
  • sporangiospores
  • conidiospores
Match column I with column II and select the correct option from the given codes.
Column IColumn II
A. John Ray(i) Gave the concept of new systematics
B. C. Linnaeus(ii) First described species as a unit of classification
C. Aristotle(iii) Father of Zoology
D. Julian Huxley(iv) Introduced binomial nomenclature
  • A-(i), B-(ii), C-(iii), D-(iv)
  • A-(iv), B-(ii), C-(iii), D-(i)
  • A-(ii), B-(iii), C-(i), D-(iv)
  • A-(ii), B-(iv), C-(iii), D-(i)
Organisms living in salty areas are called as-
  • Methanogens
  • Halophiles
  • Heliophytes
  • Thermoacidophiles
Which among the following is not a prokaryote?
  • Nostoc
  • Saccharomyces
  • Oscillatoria
  • Mycobacterium
Sexual reproduction in fungi is carried out by the fusion of compatible nuclei from two parents at a definite stage in the life cycle. Identify the different types of sexual reproduction occurring in fungi from the given figures and select the correct option.
885476_bd9fe966fb7c432187b15068869d1557.JPG
  • P - Heterogamy, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatagamy
  • P - Planogametic copulation, Q - Gametangial copulation, R - Gametangial contact, S - Spermatogamy, T - HeterothaIfism
  • P - Planogametic copulation, Q - Gametangial contact, R - Gametangial copulation, S - Spermatisation, T - Somatogamy
  • P - Heterogamy, Q - Oogamy, R - Planogametic copulation, S - Conidiospores, T - Heterothallism
With respect to the fungal sexual cycle, choose the correct sequence of events-
  • Karyogamy, plasmogamy and meiosis
  • Meiosis, plasmogamy and karyogamy
  • Plasmogamy, karyogamy and meiosis
  • Meiosis, karyogamy and plasmogamy
Association between mycobiont and phycobiont is found in-
  • Mycorrhiza
  • Root
  • Lichens
  • BGA
Contagium vivum fluidum was proposed by
  • D.J. Ivanowsky
  • M. W. Beijerinck
  • Stanley
  • Robert Hooke
Which of the following bacteria is present in the rumen of cattle ?
  • Azotobacfer
  • Rhizoblum
  • Methanobacterium
  • Azospirilium
Find out the correct statement.
  • In lichens, the algal component is called phycobiont and fungal component is known as mycobiont, which are heterotrophic and autotrophic, respectively.
  • Viroid contains RNA of low molecular weight and protein coat.
  • A virus contains both RNA and DNA.
  • Viruses are obligatory parasites.
Select the correct combination of the statements (i - iv) regarding the characteristics of certain organisms.
(i) Methanogens are archaebacterial which produces methane in marshy areas.
(ii) Nostoc is a filamentous blue-green alga which fixed atmospheric nitrogen.
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(iv) Mycoplasma lacks a cell wall and can survive without oxygen.
  • (ii) and (iii)
  • (i), (ii) and (iii)
  • (ii), (iii) and (iv)
  • (i), (ii) and (iv)
In lithosere, foliose lichens make the conditions favourable for the growth of
  • Crustose lichens
  • Mosses
  • Annual grasses
  • Perennial grasses
Study the following statements and select the correct ones.
(i) Methanogens are archaebacteria which produce methane in marshy areas.
(ii) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen.
(iii) Many members of the genus Glomus form mycorrhiza.
  • (i) and (ii)
  • (i) and (iii)
  • (ii) and (iii)
  • (i), (ii) and (iii)
Which of the following is used as an atmospheric pollution indicator?
  • Lepidoptera
  • Lichens
  • Lycopersicon
  • Lycopodium
Which one of the following is a bio-indicator of air pollution?
  • Fern
  • Lichen
  • Money Plant
  • Dodder
Which of the following microbes is a proteinacious infectious agent? 
  • Fungi
  • Prions
  • Bacteria
  • Protozoa
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