Q. No.Which of the following statements is correct?
1. Organisms that depend on living plants are called saprophytes.
2. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
3. The fusion of two cells is called Karyogamy.
4. Fusion of protoplasms between two motile on non-motile gametes is called plasmogamy.
1. Organisms that depend on living plants are called saprophytes.
2. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
3. The fusion of two cells is called Karyogamy.
4. Fusion of protoplasms between two motile on non-motile gametes is called plasmogamy.
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In which kingdom would you classify the archaea and nitrogen-fixing organism, if the five-kingdom system of classification is used?
| 1. | Plantae | 2. | Fungi |
| 3. | Protista | 4. | Monera |
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Which disease of man is similar to cattle's, bovine spongiform encephalopathy:
| 1. | Encephalitis | 2. | Jacob-Creutzfeldt disease |
| 3. | Spongiocitis of cerebrum | 4. | Spondylitis |
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Find the correct match [with respect to Whittaker’s Five Kingdom classification]:
| 1. | Monera | All members have a cell wall |
| 2. | Protista | All members are photosynthetic |
| 3. | Fungi | All members are multi-cellular |
| 4. | Animalia | All members are heterotrophs |
The structure shown in the given figure represents:
1. the newest version of a Bluetooth speaker by Amazon
2. the soap case like cell wall of a diatom
3. cellulosic plates in the walls of dinoflagellates
4. pellicle in the wall of euglenoids
The given picture shows the ear of wheat containing a mass of olive-brown SMUT spores. The disease is caused by a fungal pathogen belonging to:
| 1. | Ascomycetes | 2. | Phycomycetes |
| 3. | Basidiomycetes | 4. | Deuteromycetes |
The ‘photobiont’ [photosynthetic component] in a Lichen can be:
| I. A green alga | II. A cyanobacterium |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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Archaebacteria differ from other bacteria in having a different cell wall structure. Which of the following is/are true?
I. No archaebacteria have peptidoglycan in their cell wall but some can have pseudopeptidoglycan.
II. No bacteria have S-layer in their cell envelopes but some may have slimy glycocalyx.
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
What is common to Anabaena, Nostoc, Nitrosomonas and Nitrobacter?
I. All are photosynthetic autotrophs.
II. All can directly fix atmospheric nitrogen.
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Regarding viroids:
| I: | They are small single-stranded, circular RNAs that are infectious pathogens. |
| II: | The first recognized viroid was the Potato spindle tuber viroid, abbreviated PSTVd. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
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