261.
Link between procaryotes and multicellular eucaryotes
A
Cynabacteria
B
Protista
C
Fungi
D
Plants
Answer :
Protista
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262.
Which of the following are likely to be present in deep sea water?
A
Eubacteria
B
Blue-green algae
C
Saprophytic fungi
D
Archaebacteria
Answer :
Archaebacteria
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Archaebactera live in some of the most harsh habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens) and in deep sea water.
263.
Which of the following algae secrete "Saxitoxins
A
Gonyaulax
B
Oscillatoria
C
Nocticula
D
Phrocystis
Answer :
Gonyaulax
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264.
The zygospore of Mucor thick walled and its colour is
A
Blue
B
White
C
Green
D
Black
Answer :
Black
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265.
Halophiles, methanogens and thermoacidophils are
A
Cyanobateria
B
Eubacteria
C
Actinomycetes
D
Archaebacteria
Answer :
Archaebacteria
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266.
Some parasites required two hosts to complete their life cycle because
A
Their reproductive potential increase
B
By changing host the parasites can never by endangered of being exterminated is one host
C
They cannot carry on both sexual and asexual cycles in the same host.
D
None of the above
Answer :
They cannot carry on both sexual and asexual cycles in the same host.
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267.
Most of the Lichens consist of
A
blue-green algae and basidomycetes
B
blue-green algae and ascomycetes
C
red algae and ascomycetes
D
brown algae and phycomycetes
Answer :
blue-green algae and ascomycetes
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268.
Mycorrhiza is a
A
Parasitic relation between fungus and algae
B
Symbiotic relation between fungus and algae
C
Symbiotic relation between fungus and roots
D
Parasitic relations between fungus and roots
Answer :
Symbiotic relation between fungus and roots
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269.
Camel, Cattle, sheep & goats can digest cellulose by virtue of
A
Their enzyme
B
Symbiotic E. coli
C
Symbiotic bacteria & protozoa
D
Symbiotic virus & nematods
Answer :
Symbiotic bacteria & protozoa
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270.
Pure culture of bacteria was first obtained by
A
L.Koch
B
L.Pasture
C
A.Leeuwenhook
D
J.Lister
Answer :
L.Koch
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