Q. No.Semiconservative replication of DNA was first demonstrated in
1. Salmonella typhimurium
2. Drosophila melanogaster
3. Escherichia coli
4. Streptococcus pneumoniae
1. Salmonella typhimurium
2. Drosophila melanogaster
3. Escherichia coli
4. Streptococcus pneumoniae
The common nitrogen-fixer in paddy fields is
1. Azospirillum
2. Oscillatoria
3. Frankia
4. Rhizobium
Membrane-bound organelles are absent in
1. Streptococcus
2. Chlamydomonas
3. Plasmodium
4. Saccharomyces
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A prokaryotic autotrophic nitrogen fixing symbiont is found in :
1. Alnus
2. Cycas
3. Cicer
4. Pisum
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The Cyanobacteria are also referred to as
1. Protists
2. Golden algae
3. Slime moulds
4. Blue green algae
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Maximum nutritional diversity is found in which of the following group?
| 1. | Fungi | 2. | Animalia |
| 3. | Monera | 4. | Plantae |
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A nitrogen-fixing microbe associated with Azolla in rice fields is :
1. Spirulina
2. Anabaena
3. Frankia
4. Tolypothrix
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