Basic Science : Kingdom Monera Kingdom Protista QUESTIONS AND ANSWERS :: part3 : 16 to 20
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
16.Cyanobacteria are |
| Saprotrophs |
| Photoautotrophs |
| Chemoautotrophs |
| Chemoheterotrophs |
17.Bacterial reproduction is |
| Only asexual |
| Only sexual |
| Mostly asexual |
| Mostly sexual |
18.The bacterium which reduces the fertility of soil is |
| Nitrosomonas |
| Bacillus denitrificans |
| Azotobacter sp. |
| Nitrobacter |
19.Bacteria are thought to be primitive organisms because they |
| Are small, microscopic plants, which cannot be seen by naked eye |
| Cause serious diseases in human beings, domesticated animals and crop plants |
| Produce endospores which are very resistant to adverse conditions |
| Possess incipient nucleus and show division similar to amitosis |
20.Which of the following is not true of Escherichia coli? |
| Gene recombination can occur through transformation, transduction and conjugation |
| It occurs in human intestine |
| It lacks true nucleus |
| It is diploid |
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