What is viroid short answer?
Viroids are small single-stranded, circular RNAs that are infectious pathogens. Unlike viruses, they have no protein coating. All known viroids are inhabitants of angiosperms (flowering plants), and most cause diseases, whose respective economic importance to humans varies widely.
What is viroid biology class 11?
Hint: viroids are the plant pathogen that has short, circular, single-stranded RNA. In them, the RNA is present without the protein coat. Viroids are extremely small in size. Their RNA does not code for any protein. Viroids are dependent on the plant virus for their replication.
What is viroid disease?
Abstract. Viroids are single-stranded, covalently closed, circular, highly structured noncoding RNAs that cause disease in several economically important crop plants. They replicate autonomously and move systemically in host plants with the aid of the host machinery.
What are viroids give example?
Potato spindle tuber viroid
Avsunviroidae
Viroid/Representative species
What is difference between virus and viroids?
The main difference between virus and viroids is that a virus is a small infectious agent, which can only replicate inside living cells whereas viroids are the smallest form of infectious agents, which only infect plants.
What is viroids Byjus?
Viroids are infectious pathogens that affect only plants, therefore are also called as the plant pathogens.
What are viroids agriculture?
Introduction. One of the most intriguing classes of plant pathogens are the viroids, subviral pathogens that have been isolated from higher plants afflicted with specific diseases. Viroid hosts include both herbaceous and woody species — agronomic as well as ornamental.
What is the difference between a virus and a viroid?
Virus contains DNA or RNA as genetic material and a protein coat, whereas viroids have no protein coat, but only RNA as their nucleic acid. This is the reason why viroids are carried inside viruses e.g., hepatitis-D is a viroid that is carried in the capsid of heptitis-B virus.
Who is the father of virology?
Martinus Beijerinck is often called the Father of Virology.
What do u mean by virion?
virion, an entire virus particle, consisting of an outer protein shell called a capsid and an inner core of nucleic acid (either ribonucleic or deoxyribonucleic acid—RNA or DNA). The core confers infectivity, and the capsid provides specificity to the virus.