Q. No.The disease caused by prions in humans is known as:
1. Bovine spongiform encephalopathy
2. Scrapie
3. CJD [Creutzfeldt Jakob Disease]
4. Infectious mononucleosis
1. Bovine spongiform encephalopathy
2. Scrapie
3. CJD [Creutzfeldt Jakob Disease]
4. Infectious mononucleosis
In the Two Kingdom classification, the Kingdom Plantae was erroneous with some major issues that include:
| I: | Placing bacteria and blue green algae with eukaryotic groups |
| II: | Grouping together the unicellular organisms with multicellular ones |
| III: | Placing heterotrophic fungi with autotrophic plants |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
What is not true regarding sexual reproduction in basidiomycetes?
| 1. | Sex organs are well developed |
| 2. | Plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes |
| 3. | Karyogamy and meiosis take place in basidium, producing four basidiospores |
| 4. | Basidiospores are produced exogenously on the basidium |
Viruses are:
1. Obligate intracellular parasites
2. Obligate extracellular parasites
3. Facultative parasites
4. Free living, outside a living cell
The cell walls of diatoms are ‘indestructible’ as they are embedded with:
| 1. | Silica | 2. | Chitin |
| 3. | Calcium | 4. | Raphides |
Bacteriophages are:
| 1. | Bacteria infecting ss RNA viruses |
| 2. | Bacteria infecting ds RNA viruses |
| 3. | Viruses that infect bacteria and generally have ds DNA |
| 4. | Viruses that infect bacteria and generally have ds RNA |
Yeast is unique amongst the members of Kingdom Fungi because it:
1. reproduces by ascospores
2. is unicellular
3. does not have a chitinous cell wall
4. does not have a sexual mode of reproduction
The phenomenon of red tides is associated with blooms of:
| 1. | Zooxanthelle | 2. | Gonyaulax |
| 3. | Blue green algae | 4. | Ctenoplana and Beroe |
Identify the incorrect statement regarding Euglenoids:
| 1. | Majority are found in fresh stagnant water |
| 2. | Presence of two flagella |
| 3. | Behave as heterotrophs when deprived of sunlight |
| 4. | Pigments entirely different from those found in higher plants |
Which of the following is not true for fungi belonging to the class phycomycetes?
| 1. | Aseptate and coenocytic mycelium |
| 2. | Spores endogenously produced in sporangium |
| 3. | Asexual reproduction by nonmotile zoospores or motile aplanospores |
| 4. | Found in aquatic habitats, decaying wood or as obligate parasites on plants |
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