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Biological Classification MCQs | Biological Classification Short Questions and Answers

(1) Some hyperthermophilic organisms that grow in highly acidic (pH 2) habitats belong to two groups
[A] liverworts and yeasts
[B] eubacteria and archaea
[C] protists and mosses
[D] cyanobacteria and diatoms
Answer: eubacteria and archaea
(2) Pick the correct combination of statements (i-iv) regarding characteristics of some entities
i. Methanogens are archaebacteria that 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
[A] (ii) and (iii)
[B] (i), (ii) and (iii)
[C] (ii), (iii) and (iv)
[D] (i), (ii) and (iv)
Answer: (i), (ii) and (iv)
(3) Bacterial leaf blight of rice is caused by a species
[A] Pseudomonas
[B] Xanthomonas
[C] Erwinia
[D] None of these
Answer: Erwinia
(4) Fungi can be stained by
[A] Saffranine
[B] Cotton blue
[C] Glycerine
[D] Lactophenol
Answer: Cotton blue
(5) Fungi usually store the reserve food material in the form of
[A] Starch
[B] Lipid
[C] Glycogen
[D] protein
Answer: Glycogen
(6) Fungi can be distinguished from algae in fact that
[A] Cell wall is cellulosoic cell wall and chlorophyll is absent
[B] Nucleus is present
[C] Mitochondria are absent
[D] Cell wall is chitinous and chlorophyll is absent
Answer: Cell wall is chitinous and chlorophyll is absent
(7) Ergot is obtained from
[A] Rhizopus
[B] Claviceps
[C] Albugo
[D] Phytomonas
Answer: Claviceps
(8) One of the following is a predatory fungus
[A] Arthrobotrys
[B] Puccinia
[C] Fusarium
[D] Alternaria
Answer: Arthrobotrys
(9) Fungi producing usually eight spores in a sac like structure belong to
[A] Phycomycetes
[B] Ascomycetes
[C] Basidiomycetes
[D] Deuteromycetes
Answer: Ascomycetes
(10) One of the following is a heteroceous fungus?
[A] Albugo
[B] Phytophora
[C] Puccinia
[D] Ustilago
Answer: Puccinia
(11) In some parasitic fungi a globular or hook like structure is formed at the point of contact with the host. This is known as
[A] Haustoria
[B] Appresorium
[C] Hold fast
[D] Hook
Answer: Appresorium
(12) Fungi which grow on dung are termed as
[A] Coprophilous
[B] Terricolous
[C] Sacxicolous
[D] Saxiphilous
Answer: Coprophilous
(13) The fruiting body of Aspergillus is called
[A] Apothecium
[B] Perithecium
[C] Cleistothecium
[D] Hypanthodium
Answer: Cleistothecium
(14) All fungi are
[A] autrophs
[B] Saprophytes
[C] Parasites
[D] Heterotrophs
Answer: Heterotrophs
(15) One of the common fungal diseases of man is
[A] Cholera
[B] Plague
[C] Ringworm
[D] Typhoid
Answer: Ringworm
(16) Aflatoxin is produced by
[A] Nematode
[B] Fungi
[C] Virus
[D] Bacteria
Answer: Fungi
(17) Yeast is unlike bacteria in being
[A] Unicellular
[B] Multicellular
[C] Prokaryotic
[D] Eukaryotic
Answer: Eukaryotic
(18) “Perfect stage” of a fungus means
[A] When the fungus is perfectly healthy
[B] When it reproduces asexually
[C] When it forms perfect sexual spores
[D] None of these
Answer: When it forms perfect sexual spores
(19) Kingdom Monera consist of
[A] Prokaryotes
[B] Eukaryotes
[C] Archaebacteria
[D] All of the above
Answer: Prokaryotes
(20) Some bacteria thrive extreme environment conditions such as absence of oxygen, high salt concentration, high temperature and acidic pH. Name them
[A] Cyanobacteria
[B] Eubacteria
[C] Archaebacteria
[D] All of the above
Answer: Archaebacteria

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