1.9 VIRUSES VIROIDS PRIONS & LICHENS

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Across
  1. 3. The algal component of the Lichen is known as
  2. 5. It was found to be a free RNA; it lacked the protein coat
  3. 7. Viruses are ...... parasites.
  4. 11. In Lichen fungi provide ..... and absorb mineral nutrients and water for its partner.
  5. 13. In1971 T.O. Diener discovered a new infectious agent called Viroids that was smaller than viruses and caused disease?
  6. 15. Prions are the agents were similar in size to .....
  7. 17. Lichens are very good ............ indicators.
  8. 18. Lichens ..........grow in polluted areas.
  9. 19. Bacterial viruses or bacteriophages (viruses that infect the bacteria) are usually have the genetic material.
  10. 20. The protein coat called capsid made of small subunits called ..........., protects the nucleic acid.
Down
  1. 1. The fungal component of the Lichen is known as
  2. 2. Bovine Spongiform Encephalopathy (BSE) commonly called ........... in cattle.
  3. 4. So close is their association that if one saw a lichen in nature one would never imagine that they had ............ within them.
  4. 6. In Lichen Algae prepare ..... for fungi.
  5. 8. The RNA of the viroid was of .... molecular weight.
  6. 9. A virus is a nucleoprotein and which part of the virus is infectious?
  7. 10. In addition to .......... viruses also contain genetic material, that could be either RNA or DNA.
  8. 12. In modern medicine certain infectious neurological diseases were found to be transmitted by an agent consisting of abnormally folded protein.IT WAS CALLED AS?
  9. 14. viruses that infect plants have the genetic material.
  10. 16. Which are symbiotic associations i.e. mutually useful associations, between algae and fungi?