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

Zygospore of Rhizopus develops into
  • Gametangium
  • Promycelium
  • Progamentangium
  • Zygosporangium
Fungi are:
  • Hetetotrophs
  • Autotrophs
  • Both A and B
  • Photosynthetic 
Sexual reproduction in Rhizopus occurs through _________.
  • Gametangial contact
  • Gametangial copulation
  • Planogametic copulation
  • Spermatogamy
Ainsworth has placed Rhizopus in ________.
  • Zygomycetes
  • Mastigomycotina
  • Ascomycotina
  • Myxomycotina
Reindeer Moss is :
  • Lichen
  • Fungus
  • Bryophyte
  • Cnidarian
A harmful lichen is 
  • Umbilicaria
  • Letharia
  • Usnea
  • Cladonia
Zygospore is formed from :
  • Gamentangial copulation
  • Gametic union
  • Zygote
  • Oogamy
Select the correct match :
  • Phytoplankton - Protozoa
  • Symbiosis - Lichen
  • Holozoic nutrition - Fungi
  • Autotrophs - Monerans
Which of the following is incorrect ?
  • Sporangiospores of Rhizopus are diploid.
  • Rhizopus belongs to zygomycetes.
  • Dominant phase of Chlamydomonas is haploid.
  • Zoospores of Chlamydomonas are haploid.
What are the successive structures formed in course of sexual reproduction in Rhizopus?
  • Zygospore, progametangium, gametangium, zygophore.
  • Progametangium, zygophore, gametangium, zygospore.
  • Progametangium, gametangium, zygospore, zygophore.
  • Zygophore, progametangium, gametangium, zygospore.
Asexual spores formed by Colletotrichum faleatum, Sphaelotheca sorghi and Rhizopus stolonifer are :
  • Many celled
  • One celled
  • Pyriform
  • Rod-shaped
Asexual reproduction in ascomycetous fungi takes place by :
  • Gametangia
  • Conidiophore
  • Exospores
  • Endospores
Heterotrophic fungi can live as :
  • Parasite
  • Saprophyte
  • Symbiont
  • All the above
Short twisted strands of hyphae which serve as anchors for lichens are :
  • Rhizines
  • Rhizoids
  • Mycelium
  • Roots
Sexual reproduction in fungi can occur by means of :
  • Sporangiospore, oospore and ascospore
  • Zoospore, oospore and ascospore
  • Sporangiospore, ascospore and basidiospore
  • Oospore, ascospore and basidiospore
Which is associated with asexual reproduction in fungi?
  • Ascospores
  • Basidiospores
  • Zygospores
  • Conidiospores
Lichen are composite organisms consisting of an alga and 
  • Moss
  • Fungus
  • Protozoa
  • Bacteria
Cellulose is a major component of cell wall of 
  • Pseudomonas
  • Saccharomyces
  • Pythium
  • Xanthomonas
Stage in some fungi having two haploid nuclei per cell is
  • Diplotene
  • Dikaryophase
  • Dikaryotic
  • Both A and B
System of classification proposed by two botanists and claimed to be natural system is by
  • Bentham and Hooker
  • Aristotle and Theophrastus
  • Darwin and Wallace
  • Engler and Prantl
Merit of Bentham and Hooker's system is
  • Placement of renales in beginning
  • Placement of orchidaceae in microspermae
  • Placement of asteraceae in beginning of gamopetalae
  • Position of gymnospermae in between dicots and monocots
Choose the correct statement :
  • Members of phycomycetes are facultative parasites on plants.
  • Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.
  • Kingdom plantae includes all eukaryotic chlorophyll containing organisms and non-chlorophyllous oraganisms called plant.
  • Trichoderma belongs to basidiomycetes.
  • Euglenoids include diatoms.
The most common photobiont from green algae in lichen thallus is :
  • Trebouxia
  • Tetraspora
  • Chlamydomonas
  • Ulothrix
Aristotle divided animals into
  • Protozoa and metazoa
  • Chordates and nonchordates
  • Anaima and enaima
  • Arboreal and terrestrial
Sthavara of Susrata were
  • Animals
  • Fishes
  • Quadrupeds
  • Plants
The correct condition with reference to sexual reproduction in Rhizopus stolonifer is :
  • $$ (+)  X  (-) = $$ Zygospore
  • $$ (+) X (-) = $$ No zygospore
  • $$ (-) X (-) = $$ Zygospore
  • $$ (+) X (+) = $$ Zygospore
Which is true for fungi ?
  • They are heterotrophs.
  • They lack nuclear membrane.
  • They are mostly unicellular
  • They lack rigid cell wall.
Phycobiont and mycobiont together constitute :
  • Phycomycetes
  • Lichens
  • Phycobilins
  • Mycorrhiza
Lichens growing on rocks are called _______.
  • Saxicolous
  • Corticolous
  • Lignocolous
  • Terricolous
Honey Fungus (Armillaria ostoyae) has been found to occupy an area of
  • $$600$$ hectares
  • $$200$$ hectares
  • $$20$$ hectares
  • $$2$$ hectares
Cell wall of both bacteria and cyanobacteria contains
  • Lipid
  • Pectin
  • Protein
  • Muramic acid
Ruminants produce methane due to presence of___________.
  • Ruminococcus
  • Methanomonas
  • Methanobacterium
  • All the above
Telome theory (Zimmermann, $$1930$$) is related to origin of __________.
  • Pollen tube
  • Vascular plants
  • Seed
  • Fruit
Number of viruses per ml of sea$$/$$ lake water is__________________.
  • Nil
  • $$10,000 - 100,000$$
  • $$5-10$$ million
  • $$500,000 - 5,000,000$$
Bdellovibrios is a?
  • Virus
  • Viroid
  • Prion
  • Bacterium
Phenomenon of halotism or controlled parasitism is shown by _______.
  • Leguminous roots
  • Lichens
  • Mycorrhiza
  • All of the above
Of the following, the two bacterias used in genetic engineering are
  • Nitrosomonas and Nitrobacter.
  • Escherichia and Agrobacterium.
  • Azotobacter and Klebsiella.
  • Rhizobium and Diplococcus..
Which one of the following is denitrifying bacteria?
  • Nitrosomonas
  • Pseudomonas
  • Azotobacter
  • Nostoc
Peritrichous bacteria have flagella
  • At one end
  • Two poles
  • All over
  • No where.
How many organisms in the list given are autotrophs Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Trypanosoma, Porphyra, Wolffia 
  • Four
  • Five
  • Six
  • Three
Pick up the wrong statement.
  • Lichens are symbiotic associations.
  • Lichens do not grow in unpolluted areas.
  • Lichens are very good pollution indicators.
  • Algal component of lichen is known as phycobiont .
Which is correct Aristotle's ladder of nature?
  • Inanimate matter $$\rightarrow $$ Lower plants $$\rightarrow $$ Higher plants $$\rightarrow $$ Zoophyte $$\rightarrow $$ Entoma $$\rightarrow $$ Ostraco derma Malacia $$\rightarrow $$ Malacostraca $$\rightarrow $$ Fish $$\rightarrow $$ Oviparous quadrupeds $$\rightarrow $$ Cetacea $$\rightarrow $$ Birds $$\rightarrow $$ Viviparous quadrupeds $$\rightarrow $$ Humans
  • Inanimate matter $$\rightarrow $$ Lower plants $$\rightarrow $$ Higher plants $$\rightarrow $$ Zoophyta $$\rightarrow $$ Entoma $$\rightarrow $$ Malacia
  • Malacostraca $$\rightarrow $$ Ostracodorma $$\rightarrow $$ Fish $$\rightarrow $$ Oviparous quadrupeds $$\rightarrow $$ Cetacea $$\rightarrow $$ Birds $$\rightarrow $$ Viviparous quadrupeds $$\rightarrow $$ Humans
  • Inanimate matter $$\rightarrow $$ Lower plants $$\rightarrow $$ Higher plants $$\rightarrow $$ Zoophyta $$\rightarrow $$ Malacia $$\rightarrow $$ Entoma $$\rightarrow $$ Malaceetreca $$\rightarrow $$ Ostracoderma $$\rightarrow $$ Fish $$\rightarrow $$ Oviparous quadrupeds $$\rightarrow $$ Cetacea $$\rightarrow $$ Birds $$\rightarrow $$ Viviparous quadrupeds $$\rightarrow $$ Humans
  • Inanimate matter $$\rightarrow $$ Lowet plants $$\rightarrow $$ Higher plants $$\rightarrow $$ Zoophyta $$\rightarrow $$ Entoma $$\rightarrow $$ Ostracoderma $$\rightarrow $$ Malacia $$\rightarrow $$ Malacostraca $$\rightarrow $$ Fish Cetacea $$\rightarrow $$ Birds $$\rightarrow $$ Oviparous quandrupods $$\rightarrow $$ Viviparous quadrupeds $$\rightarrow $$ Humans
The fungal component of lichen belongs to the class
  • Ascomycetes
  • Basldiomycetes
  • Both A and B
  • Deuteromycetes
A homonym is  ___________
  • Two or more names for the same taxon
  • Species name repeats the generic name
  • Identical name of two different taxa
  • Name given to a taxon in local language
Which is in appropriate among the following in terms of the concept that $$\cfrac { \left[ A \right]  }{ \left[ T \right]  } $$ and $$\cfrac { \left[ G \right]  }{ \left[ C \right]  } $$ in DNA is equal to one"
  • coliphage $$\phi \times 174$$
  • Polio virus
  • TMV
  • All of the above
Sulfolobus comes under category 
  • Extreme halophils
  • Methanogens
  • Thermoacidophils
  • All of these
Alga-fungi belongs to which class?
  • Phycomycetes
  • Deuteromycetes
  • Ascomycetes
  • Basidiomyctes
In Agaricus, the largest phase of nuclear condition is ______.
  • $$n$$
  • $$2n$$
  • $$n+n$$
  • $$3n$$
Which one of the following is best indicator of $$SO_2$$ pollution ? 
  • Pinus
  • Fem
  • Lichen
  • Algae
Lichens are composite organisms containing an alga and
  • Fungus
  • Bacterium
  • Moss
  • Protozoan
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