481.
Red rot of sugarcane is caused by
A
Cercospora personata
B
Helminthoporium oryzae
C
Colletotrichum falcatum
D
Alternaria solani
Answer :
Colletotrichum falcatum
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482.
The method of classification, called cladistics, is based
A
Natural system
B
Mutation theory
C
Artificial system
D
Evolutionary history
Answer :
Evolutionary history
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483.
In Whittaker's five kingdom classification, eucaryotes were assigned to
A
All the five kingdom
B
Only four of the five kingdoms
C
Only three kingdom
D
Only one kingdom
Answer :
Only four of the five kingdoms
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484.
Non-symbiotic N2 fixer is
A
Anabaena
B
Rhizobium
C
Azotabactor
D
Azolla
Answer :
Azotabactor
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485.
Which statement is true
A
Tautonyms do not occur in plants
B
Tautonyms do not occur in animals
C
Tautonyms normally occur in animals and some time occur in plants
D
Tautonyms occur only in bacteria
Answer :
Tautonyms do not occur in plants
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486.
In which book, Linnaeus proposed the principles of nomenclature
A
Species plantarum
B
Systema Naturae
C
Flora lapponica
D
Philosophia botanica
Answer :
Philosophia botanica
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487.
Nitrifying bacteria are able to
A
Convert atmospheric nitrogen into soluble forms
B
Convert ammonia to nitrate
C
Ammonia to nitrogen
D
Nitrate to nitrogen
Answer :
Convert ammonia to nitrate
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488.
Which name of invalid
A
Name not published in species plantarum
B
Name proposed prior to 1961
C
Name whish is not in latin
D
Name for which holotype is not designated
Answer :
Name for which holotype is not designated
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489.
Sporogenous tissue is amphithecial in origin is
A
Riccia
B
Marchantia
C
Anthoceros
D
Funaria
Answer :
Anthoceros
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490.
Which statement is wrong for Cycas
A
Xylem have vessels
B
Cones well developed
C
It has coralloid roots
D
Circinate ptyaxis
Answer :
Xylem have vessels
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