161.
In pure laboratory culture of Mucor, the formation of zygospores does not occur, this due to the A
Presence of (+) and (-) strains in its mycelium
B
Abssence of (+) and (-) strains in its mycelium
C
Deficiency of O2
D
Deficiency of water
Answer :
Abssence of (+) and (-) strains in its mycelium
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162.
Entamoeba coli causes A
Pyrrhoea
B
Diarrhoea
C
Dysentery
D
None
Answer :
None
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Pyrrhoea is caused by bacterial infections along with other factors, Diarrhoea by caused by rotavirus along with many other factors. Dysentery is caused by Entamoeba histolytica.Notes : Entamoeba coli is a non-pathogenic species of Entamoeba that frequently exists as a commensal parasite in the human gastrointestinal tract. E. coli is important in medicine because it can be confused during microscopic examination of stained stool specimens with the pathogenic Entamoeba histolytica.
163.
An organism which is generally without plastid and can synthesize its organic food is A
Bacteria
B
Viruses
C
Fungi
D
Bacteriophage
Answer :
Bacteria
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164.
Which bacteria are responsible for producing methane in bio-gas fermenter A
Cyanobacteria
B
Archaebacteria
C
Pseudomonas
D
Mycelial bacteria
Answer :
Archaebacteria
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165.
System of classification used by Linnaeus was A
natural system
B
artificial system
C
phylogenetic system
D
asexual system
Answer :
artificial system
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Linnaeus put forward an “Artificial system” of plant classification which was based
on sexual characters. It is commonly also called as sexual system of plant classification.
166.
Pseudopodia are commonly formed in A
Amoeba
B
Amoeba and leucocytes
C
Many protozoans and leucocytes
D
Many protozoa only
Answer :
Many protozoans and leucocytes
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167.
In which of the following the body is an aggregation of amoeboid cells A
Acellular slime molds
B
Cellular slime molds
C
Diatoms
D
Dinoflagellate
Answer :
Cellular slime molds
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168.
The study of cultivation of Garden plants fro flowers and fruits is called A
Plant breeding
B
Agronomy
C
Horticulture
D
Floriculture
Answer :
Horticulture
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169.
Which substance is minimum is Amoeba body A
Carbohyddrate
B
Protein
C
Fats
D
Nucleic Acid
Answer :
Nucleic Acid
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170.
Bacteriophage is similar to a fungus & bacterium in having A
RNA as the genetic material
B
DNA as the genetic material
C
Cell wall
D
Similar in reproduction
Answer :
DNA as the genetic material
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