Q. No.In Whittaker’s Five Kingdom classification, heterotrophic mode of nutrition is present in members of:
1.
Two kingdoms
2.
Three kingdoms
3.
Four kingdoms
4.
Five kingdoms
Which of the following plant diseases in not caused by a fungus?
1. Late blight of potato
2. Loose smut of wheat
3. Canker in citrus
4. Powdery mildew of grape vine
Which of the following organisms, earlier placed in Animal Kingdom, is placed under Kingdom Protista in Whittaker’s classification?
| 1. | Ameoba proteus | 2. | Chlamydomonas |
| 3. | Gonyaulax | 4. | Chlorella |
Which of the following would best describe a virus?
| 1. | Non cellular organization, crystalline inert structure in a living cell |
| 2. | Non cellular organization, crystalline inert structure outside a living cell |
| 3. | Cellular organization, crystalline inert structure in a living cell |
| 4. | Cellular organization, crystalline inert structure outside a living cell |
The main criteria for classification used by Whittaker included all the following, except:
1. Cell structure and body organization
2. Mode of nutrition
3. Mode of reproduction
4. Mode of locomotion
Consider the given two statements:
| I: | Mycoplasma are naturally resistant to antibiotics that target cell wall synthesis |
| II: | They are the smallest bacteria discovered yet |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
In a fungus like Neurospora, conidia can be distinguished from ascospores as:
| 1. | ascospores are diploid, conidia are haploid |
| 2. | ascospores are produced only by meiosis, conidia are produced only by mitosis |
| 3. | ascospores have undergone genetic recombination during their production, conidia have not |
| 4. | ascospores are larger, conidia are smaller |
Identify the incorrect statement regarding true bacteria?
| 1. | As a group, they exhibit maximum metabolic diversity. |
| 2. | Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur. |
| 3. | Heterotrophic bacteria are the most abundant in nature. |
| 4. | Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores. |
Chemosynthestic autotrophic bacteria:
| I. | Produce ATP by oxidizing inorganic substances |
| II. | Play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulfur |
| 1. | Both I and II are correct | 2. | Only I is correct |
| 3. | Only II is correct | 4. | Both I and II are incorrect |
Halophiles are archaebacteria adapted to extreme:
| 1. | Hot habitats | 2. | Saline habitats |
| 3. | Marshy habitats | 4. | Cold habitats |
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