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Which group of fungi is commonly known as imperfect fungi ?

A. Phycomycetes

B. Ascomycetes

C. Basidiomycetes

D. Deuteromycetes

Correct Answer :

D. Deuteromycetes


Deuteromycetes is commonly known as fungi imperfecti due to absence of perfect sexual stage. They are classed by the colour and structure of the conidia. Since most of the conidia structures look like ascomycetes type, they are believed to be derived from ascos who lost the ability to reproduce sexually.

Related Questions

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4

Which of the following is an example of amoeboid protozoans ?

A. Trypanosoma

B. Paramecium

C. Gonyaulax

D. Entamoeba

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4

Select the correct match from the given option.

A. Occurrence of dikaryotic stage - ascomycetes and basidiomycetes.

B. Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.

C. Vegetative mean of reproduction in fungi - fragmentation, budding and sporangiophores.

D. Steps involved in asexual cycle of fungi - plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.

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4

Match the class of fungi given in column I with their examples given in column II and choose the correct option
Column-IColumn-II
(Class of fungi)(Examples)
A. AscomycetesI. Rhizopus
B. BasidiomycetesII. Penicillium
C. DeuteromycetesIII. Ustilago
D. PhycomycetesIV. Alternaria

A. A IV, B III, C I, D II

B. A II, B III, C IV, D I

C. A IV, B I, C II, D III

D. A III, B IV, C II, D I

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4

Fungi are filamentous with the exception of X which is unicellular. Identify X.

A. Yeast

B. Algae

C. Bacteria

D. Lichen

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4

Which of the following statement is incorrect ?

A. TMV has a double-stranded RNA molecule.

B. Most plant viruses are RNA viruses.

C. The bacteriophage has a double-stranded DNA molecule.

D. Most animal viruses are DNA viruses.

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4

Consider the following statements with respect to characteristic features of the kingdom.
(i) In animalia, the mode of nutrition is autotrophic.
(ii) In monera, the nuclear membrane is present.
(iii) In protista, the cell type is prokaryotic.
(iv) In plantae, the cell wall is present.
Of the above statements, which one is correct ?

A. (i) only

B. (ii) only

C. (iii) only

D. (iv) only

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4

In some viruses, RNA is present instead of DNA indicating that

A. their nucleic acid must combine with host DNA before replication.

B. they cannot replicate.

C. there is no hereditary information.

D. RNA can transfer heredity material.

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4

Which of the following pair is not correctly matched ?

A. Anabaena Cyanobacteria

B. Amoeba Protozoa

C. Gonyaulax Dinoflagellates

D. Albugo Chrysophytes

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4

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as

A. cyanobacteria

B. archaebacteria

C. chemosynthetic autotrophs

D. heterotrophic bacteria

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4

Which of the following is/are example(s) of deuteromycetes?

A. Alternaria

B. Colletotrichum

C. Trichoderma

D. All of these

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4

Chemosynthetic autotrophic bacteria are named so because

A. they oxidize various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production.

B. they oxidize various organic substances and use the released energy for their ATP production.

C. both (a) and (b)

D. none of these

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4

Which of the following statement 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.

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4

Bacteria are found to be primitive organisms because they

A. are small, microscopic which are not seen with naked eye.

B. cause serious diseases to human being, domesticated animals and crop plants.

C. produce endospores which are very resistant to adverse conditions.

D. possess incipient nucleus and show amitotic division.

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4

Which of the following pairs comes under the group chrysophytes ?

A. Diatoms and Euglena

B. Euglena and Trypanosoma

C. Diatoms and Desmids

D. Gonyaulax and Desmids

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4

Match the class of fungi given in column-I with their common name given in column-II and select the correct option.
Column-IColumn-II
(Class of fungi)(Common name)
A. PhycomycetesI. Sac fungi
B. AscomycetesII. Algal fungi
C. BasidiomycetesIII. Fungi imperfecti
D. DeuteromycetesIV. Club fungi

A. A II, B I, C IV, D III

B. A II, B IV, C I, D III

C. A IV, B I, C II, D III

D. A IV, B III, C II, D I

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4

Which of the following are the characters of dinoflagellates?
(i) They are planktonic golden yellow algae with soap box like structure.
(ii) They are marine red biflagellated protista.
(iii) They appear yellow, green, brown, blue and red in colour.
(iv) They are biflagellated organisms with pellicle.
(v) They are saprophytic (or) parasitic unicellular forms.

A. (ii) and (iii)

B. (ii) and (v)

C. (i), (ii) and (iii)

D. (ii), (iv) and (v)

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4

Bacteria and yeast are similar in all the following features except that

A. both are unicellular.

B. both are prokaryotes.

C. both are capable of causing fermentation.

D. both produce spores.

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4

Lichens indicate SO2 pollution because they

A. show association between algae and fungi.

B. grow faster than others.

C. are sensitive to SO2.

D. flourish in SO2 rich environment.

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4

Which of the following statement 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

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4

Which one single organism or the pair of organisms is correctly assigned to its taxonomic group?

A. Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.

B. Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.

C. Yeast used in making bread and beer is a fungus.

D. Nostoc and Anabaena are examples of protista.

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4

Protista includes

A. unicellular eukaryotes with well-defined nucleus only.

B. unicellular prokaryotes with membrane bound organelles.

C. unicellular eukaryotes with well-defined nucleus and membrane bound organelles.

D. both unicellular and multicellular eukaryotes with welldefined nucleus and membrane bound organelles.

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4

Which of the following groups of protozoan is not correctly matched with its feature?

A. Amoeboid - Marine forms have silica shells on their surface.

B. Flagellated - Either free living or parasitic.

C. Ciliated - Actively moving organisms due to presence of cilia.

D. Sporozoans - Move and capture their prey with the help of false feet.

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4

Which of the following is smallest living cell and can live without oxygen ?

A. Mycoplasma

B. Mycorrhiza

C. Euglena

D. Trypanosoma

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4

Fungi show asexual reproduction by all of the following kinds of spores except

A. conidia

B. oospores

C. sporangiospores

D. zoospores

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4

Match the terms given in column-I with their examples given in column-II and choose the correct option
Column-IColumn-II
(Terms)(Examples)
A. AscusI. Spirulina
B. BasidiumII. Penicillium
C. ProtistaIII. Agaricus
D. CyanobacteriaIV. Euglena
E. AnimaliaV. Sponges

A. A II, B III, C IV, D V, E I

B. A I, B II, C III, D V, E IV

C. A II, B V, C III, D I, E IV

D. A II, B III, C IV, D I, E V

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4

The figure given below shows the structure of a bacteriophage. Identify its parts labelled as A, B, C and D. 
img4

A. A - Tail fibres B - Head C - Sheath D - Collar

B. A - Sheath B - Collar C - Head D - Tail fibres

C. A - Head B - Sheath C - Collar D - Tail fibres

D. A - Collar B - Tail fibres C - Head D - Sheath

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4

Which statement 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).

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4

Mycorrhizae are useful for plants because they

A. fix atmospheric nitrogen.

B. enhance absorption of nutrients from the soil.

C. kill insects and pathogen.

D. provide resistance against abiotic stresses.

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Which of the following pair is correctly matched ?

A. Fungi Saprophytic parasitic mode of nutrition.

B. Monera Nuclear membrane is present.

C. Plantae Cell wall is made up of cellulose.

D. Animalia Cell wall is absent.

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4

Which of the following statement(s) is/are correct about ascomycetes ?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.

A. Both (i) and (ii)

B. Only (ii)

C. (i), (iii) and (iv)

D. All of these