611. Bacterial Genome is

A Double stranded circular DNA
B Double Stranted linear DNA
C Single stranded circular DNA
D Single stranded DNA
Answer :   Double stranded circular DNA
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612. A mixture of viruses, bacteria & mycoplasma are boiled in a test tube at 100 C for some time which of these would survive

A Virus
B Bacteria
C Mycoplasma
D All of the above
Answer :   Virus
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613. Parasitic Amoeba with single pseudopodium

A Amoeba proteus
B Amoeba pilasa
C Amoeba verucosa
D Entamoeba
Answer :   Entamoeba
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614. Parasexual cycle occurs in

A Phycomycetes
B Deuteromycetes
C Ascomycetes
D Basidiomycetes
Answer :   Deuteromycetes
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615. Litmus is obtained from lichen

A Lecanora esculenta
B Roccella tinctoria
C Clodonia rengiferina
D Cetraria islandica
Answer :   Roccella tinctoria
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616. Souring of milk is due to

A Aerobic bacteria
B Anaerobic bacteria
C A and B both
D None of the above
Answer :   Anaerobic bacteria
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617. In Amoeba which is responsible for osmoregulation

A Contractile vacuole
B Food vacuole
C Plasmolemma
D Lysosome
Answer :   Contractile vacuole
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618. In prokaryotes, the genetic material is

A linear DNA with histones
B circular DNA with histones
C linear DNA without histones
D circular DNA without histones
Answer :   circular DNA without histones
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619. The science dealing with vegetable culture is

A Arboriculture
B Floriculture
C Olericulture
D Sericulture
Answer :   Olericulture
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620. Conjugation was first discovered in

A Salmonella
B Streptococus
C Bacillus subtillin
D E.coli
Answer :   E.coli
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