81.
When a group of algal cells are imprisoned in fungal mycelium & whole of this group is then u sed for vegetative multiplication of a lichen, it is called A
Isidium
B
Soredium
C
Cephalodium
D
Helotism
Answer :
Soredium
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82.
Yeast grows more quickly in A
Salt water
B
Sugar solution
C
Double distilled water
D
Marine water
Answer :
Sugar solution
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83.
The motile bacteria are able to move by: A
Fimbriae
B
Flagella
C
Cilia
D
Pili
Answer :
Flagella
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Motile bacteria have thin filamentous extensions on their cell wall called flagella.
84.
Which of the following is not a viral disease A
Red Rot of sugarcane & citrus cancer
B
Leaf curl of papaya
C
Potato leaf roll
D
Tobacco mosaic
Answer :
Red Rot of sugarcane & citrus cancer
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85.
The most throughly studied fact of the known bacteria-plant interactions is the A
cyanobacterial symbiosis with some aquatic ferns
B
gall formation on certain Angiosperms by Agrobacterium
C
nodulation of Sesbania stems by nitrogen fixing bacteria
D
plant growth stimulation by phosphate-solubilising bacteria
Answer :
gall formation on certain Angiosperms by Agrobacterium
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This phenomenon has been successfully used in genetic engineering to produce disease resistant varieties of plants.
86.
Curved or Comma like bacterium of cholera is termed A
Coccus
B
Bacillus
C
Sprillum
D
Vibrio
Answer :
Vibrio
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87.
Which disease is caused by Clostridium A
Jaundice
B
Diarrhoea
C
Tatanus
D
Small pox
Answer :
Tatanus
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88.
Tobacco Mosaic Virus (TMV) genes are A
double stranded RNA
B
single stranded RNA
C
polyribonucleotides
D
proteinaceous
Answer :
single stranded RNA
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89.
Auxospores are formed by A
Diatoms
B
Euglenoids
C
Dinoflagelates
D
Bacteria
Answer :
Diatoms
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90.
Amoebic dysentry or amoebiasis is caused by A
Entamoeba histolytica
B
Amoeba proteus
C
Entamoeba coli
D
Entamoeba indica
Answer :
Entamoeba histolytica
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