Q. No.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
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
A bacteriophage DNA that has become integrated into the host cell chromosome is called as:
1. intemperate bacteriophages
2. transposons
3. prophages
4. phagemids
Consider the given two statements:
I. Chitin-rich walls of fungi can enhance feeding by absorption
II. Chitin is a strong but flexible polysaccharide
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
Identify the incorrect statement regarding viroids:
| 1. | Viroids are the smallest infectious pathogens known. |
| 2. | They are composed solely of a short strand of circular, single-stranded RNA that has no protein coating. |
| 3. | The first recognized viroid, the pathogenic agent of the potato spindle tuber disease, was discovered by Theodor Otto Diener. |
| 4. | The nucleic acid of viroids codes for only a few proteins. |
Bacteria that obtain energy from light and carbon from the fixation of carbon dioxide, using reducing equivalents from inorganic compounds are called as:
| 1. | chemolithoautotrophs | 2. | photolithoautotrophs |
| 3. | photoorganoheterotrophs | 4. | chemolithoheterotrophs |
Which of the following metabolism is unique to archaebacteria?
1. Methanogenesis
2. Diazotrophy
3. Photosynthesis
4. Methylotrophy
Ascomycetes and Basidiomycetes have many homologies. All the following will be true but:
| 1. | Binucleate ascogenous hyphae of ascomyctes and binucleate secondary hyphae of basidiomycetes |
| 2. | Ascospore and basidiospore |
| 3. | Hook and crosier method in ascomycetes and clamp connection in basidiomycetes |
| 4. | Conidia in ascomycetes and basidiomycetes |
The stages shown in the diagram given below can be seen during sexual reproduction in:
1. Rhizopus
2. Alternaria
3. Neurospora
4. Agaricus
Identify the incorrect statement regarding Euglena:
1. Euglena's chloroplasts are surrounded by three membranes and contain pyrenoids
2. Euglena has two flagella rooted in basal bodies, one flagellum is very short, and does not protrude from the cell, while the other is relatively long
3. A photosensitive red spot is present towards the anterior end
4. When feeding as a heterotroph, Euglena takes in nutrients by osmotrophy
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