Which is the "Only enzyme" that has the "Capability" to catalyze Initiation, Elongation, and Termination in the process of transcription in prokaryotes?
1. DNA Ligase
2. DNase
3. DNA-dependent DNA polymerase
4. DNA-dependent RNA polymerase
| Column-I | Column-II | ||
| A. | Citric acid | 1. | Trichoderma |
| B. | Cyclosporin | 2. | Clostridium |
| C. | Statins | 3. | Aspergillus |
| D. | Butyric Acid | 4. | Monascus |
1. A-3, B-1, C-2, D-4
2. A-3, B-1, C-4, D-2
3. A-1, B-4, C-2, D-3
4. A-3, B-4, C-1, D-2
Which of the following in sewage treatment removes suspended solids?
1. Secondary treatment
2. Primary treatment
3. Sludge treatment
4. Tertiary treatment
For a biocontrol agent to be part of an integrated pest management, it should be:
| 1. | species-specific and symbiotic |
| 2. | free living and broad spectrum |
| 3. | narrow spectrum and symbiotic |
| 4. | species-specific and inactive on non-target organisms |
| 1. | All the biological factors in the organism environment |
| 2. | The physical space where an organism lives |
| 3. | The range of temperature that the organism needs to live |
| 4. | The functional role played by the organism where it lives |
Amensalism can be represented as:
1. Species A (–) : Species B (–)
2. Species A (+) : Species B (0)
3. Species A (–) : Species B (0)
4. Species A (+) : Species B (+)
Which of the following ecological pyramids is generally inverted?
| 1. | Pyramid of biomass in a sea |
| 2. | Pyramid of numbers in grassland |
| 3. | Pyramid of energy |
| 4. | Pyramid of biomass in a forest |
The rate of decomposition is faster in the ecosystem due to the following factors, except:
| 1. | Detritus rich in sugars |
| 2. | Warm and moist environment |
| 3. | Presence of aerobic soil microbes |
| 4. | Detritus richer in lignin and chitin |
Which of the following statements is incorrect?
| 1. | Biomass decreases from first to fourth trophic level. |
| 2. | Energy content gradually increases from first to fourth trophic level. |
| 3. | Number of individuals decreases from first trophic level to fourth trophic level. |
| 4. | Energy content gradually decreases from first to fourth trophic level. |
According to Alexander von Humboldt :
| 1. | Species richness decreases with increasing area of exploration |
| 2. | Species richness increases with the increasing area, but only up to a limit |
| 3. | There is no relationship between species richness and the area explored |
| 4. | Species richness goes on increasing with increasing area of exploration |
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