Studied by 3 peopleTobacco Mosaic Virus
The ________ were found to be smaller than bacteria because they passed through bacteria- proof filters.
Diener
________ discovered a new infectious agent that was smaller than viruses and caused potato spindle tuber disease.
Viruses
________ cause diseases like mumps, small pox, herpes, AIDS and influenza.
Beijerinek
________ demonstrated that the extract of the infected plants of tobacco could cause infection in healthy plants and called the fluid as Contagium vivum fluidum.
mosaic formation
In plants, the symptoms can be ________, leaf rolling and curling, yellowing and vein clearing, dwarfing and stunted growth.
protein coat
The ________ called capsid made of small subunits called capsomeres, protects the nucleic acid.
Lichens
________ are very good pollution indicators- they do not grow in polluted areas.
algal component
The ________ is known as phycobiont and fungal component as mycobiont, which are autotrophic and heterotrophic, respectively.
Viruses
________ also contain genetic material, that could be either RNA or DNA but never both.
viruses
The ________ are non- cellular organisms that are characterised by having an inert crystalline structure outside the living cell.
Viruses
________ are nucleoprotein and the genetic material is infectious.
Viruses
________ that infect plants have single stranded RNA and ________ that infect animals have either single or double stranded RNA or double stranded DNA.
Lichens are very good pollution indicators
they do not grow in polluted areas
Note
Flashcard