Phenomenon called Alternation of generation is found in –
a. Protista
b. Fungi
c. Plantae
d. More than one options are correct
Lichens, viruses, viroids and prions have been included in the kingdom –
| 1. | Monera | 2. | Protista |
| 3. | Plantae | 4. | None of the above |
Viruses did not find a place in classification because –
| 1. | They do not possess a cellular structure |
| 2. | They can be crystallized |
| 3. | They do not divide outside the cell |
| 4. | All of the above |
Which of the following statement is incorrect?
| 1. | No virus contains both RNA and DNA. |
| 2. | A virus is a nucleoprotein and the genetic material is infectious. |
| 3. | Bacterial viruses or bacteriophages are usually single stranded DNA viruses |
| 4. | Viruses are inert outside their specific host cell. |
Which of the following statement is incorrect with respect to capsid?
| 1. | Capsid is the outermost covering of most of the viruses. |
| 2. | Capsid is made up of capsomeres. |
| 3. | Capsid protects the genetic material |
| 4. | Capsomeres are arranged in random geometric forms. |
Which of the following pathogenic disease could have the symptoms like mosaic formation, leaf rolling and curling, yellowing and vein clearing, dwarfing and stunted growth?
| 1. | Viral | 2. | Bacterial |
| 3. | Fungal | 4. | Deficiency syndrome. |
Potato Spindle Tuber disease is caused by –
| 1. | Virus | 2. | Viroid |
| 3. | Prion | 4. | Fungus |
Which of the following statement is incorrect?
| 1. | Viroids are smaller than viruses. |
| 2. | Viroid was found to be a free RNA. |
| 3. | The RNA of the viroid is of high molecular weight. |
| 4. | In 1971, T.O. Diener discovered it. |
Which of the following disease is not caused by Prions?
| 1. | Bovine spongiform encephalopathy (BSE) in cattles |
| 2. | Cr–Jacob disease (CJD) in humans. |
| 3. | Mad cow disease in cattle |
| 4. | Potato Spindle Tuber disease |
Which of the following statement is correct?
| 1. | Fungi prepare food for algae. |
| 2. | Fungi provide shelter and absorb mineral nutrients and water for its partner. |
| 3. | The algal component is known as mycobiont and fungal component as phycobiont, |
| 4. | Lichens are symbiotic associations between algae and fungi which are heterotrophic and autotrophic, respectively. |