Q. No.In general, the viruses that infect plants have:
1.
Single stranded RNA
2.
Single stranded DNA
3.
Double stranded RNA
4.
Double stranded DNA
The basis of classification for the division of Kingdom Fungi into various classes includes all the following except:
1. Morphology of the mycelium
2. Mode of spore formation
3. Types of pigments present
4. Fruiting bodies
Morels and truffles are edible fungi belonging to the class:
| 1. | Phycomycetes | 2. | Ascomycetes |
| 3. | Basidiomycetes | 4. | Deuteromycetes |
A fungus used extensively in biochemical and genetic work is:
| 1. | Neurospora | 2. | Trichoderma |
| 3. | Paecilomyces | 4. | Streptomyces |
A symbiotic relation between fungi and the roots of higher plants is called as:
| 1. | Lichen | 2. | Mycorrhiza |
| 3. | Amensal | 4. | Proto-cooperation |
The disease caused by prions in humans is known as:
1. Bovine spongiform encephalopathy
2. Scrapie
3. CJD [Creutzfeldt Jakob Disease]
4. Infectious mononucleosis
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 |
The phenomenon of red tides is associated with blooms of:
| 1. | Zooxanthelle | 2. | Gonyaulax |
| 3. | Blue green algae | 4. | Ctenoplana and Beroe |
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